How To Plant Bulbs In Spring [ Full Guide ]

October 3, 2024
/ Planting Tips

Spring is the perfect time to plant bulbs in your garden, as they will burst into colorful blooms, adding vibrancy and charm to your outdoor space. Whether you are a seasoned gardener or a novice, planting bulbs can be a rewarding and fulfilling experience. In this comprehensive guide, we will explore the step-by-step process of planting bulbs in spring, from choosing the right bulbs to preparing the soil and site, and the tools and materials you will need for a successful planting. By following these guidelines, you can create a stunning floral display to enjoy throughout the spring and summer months.

Quick Answer: How To Plant Bulbs In Spring

Before diving into the detailed steps of planting bulbs in spring, let’s provide a quick overview of the essential tasks involved in the process.

Selecting Bulbs: Choose healthy, firm bulbs that are suited for spring planting. Consider factors such as bloom time, flower color, and height to create a visually appealing garden.
Preparing the Soil: Ensure the planting site has well-drained, fertile soil. Incorporating organic matter and assessing sunlight exposure are crucial for the optimal growth of the bulbs.
Planting Depth and Spacing: Follow specific planting guidelines for each type of bulb, as different varieties have distinct requirements for depth and spacing. Adequate spacing is essential for proper air circulation and development of healthy roots.
Watering and Mulching: After planting, thoroughly water the bulbs to settle the soil and provide initial moisture. Apply a layer of organic mulch to help retain moisture and insulate the bulbs during fluctuations in temperature.
Maintenance and Care: Monitor the bulbs for adequate moisture and address any potential issues such as pests or diseases. With proper care, your bulbs will flourish and reward you with a spectacular floral display.

Now, let’s delve into the detailed steps for each of these essential tasks.

Choosing The Right Bulbs For Spring Planting

When it comes to selecting bulbs for spring planting, there are countless options available, each offering its unique colors, shapes, and blooming times. The key to a successful display lies in choosing the right bulbs that thrive in your specific growing zone and complement your garden’s aesthetic. Here are some important considerations to keep in mind when selecting bulbs for spring planting.

Consider Bloom Time And Succession

To create a continuous and varied display of blooms throughout the spring and early summer, it is essential to select bulbs with varying bloom times. This will ensure that your garden remains vibrant and colorful for an extended period. Some popular spring-blooming bulbs include tulips, daffodils, hyacinths, crocuses, and alliums. By choosing a mix of early, mid, and late blooming varieties, you can orchestrate a symphony of colors that evolves throughout the season.

Assess Sunlight Requirements

Different bulbs have varying sunlight requirements, ranging from full sun to partial shade. Before making your selection, evaluate the sunlight exposure in your garden to ensure that the chosen bulbs will thrive in their designated location. For example, tulips and daffodils generally prefer full sun, while some varieties of hyacinths and crocuses can tolerate partial shade. Understanding the sunlight needs of the bulbs will help you create optimal growing conditions for each variety.

Height And Flower Color

When planning your bulb planting scheme, consider the mature height of the plants and the color palette you wish to achieve. Taller bulbs such as tulips and alliums can serve as striking focal points, while shorter bulbs like crocuses and hyacinths work well in the foreground or as border plantings. Additionally, think about how the colors of the bulbs will complement each other and the existing elements of your garden, such as shrubs, perennials, and other spring-flowering plants.

Check Bulb Quality And Health

Before purchasing bulbs for spring planting, inspect them carefully to ensure they are firm, plump, and free from any signs of mold or damage. Healthy bulbs are more likely to establish strong roots and produce robust, long-lasting blooms. Avoid bulbs that are soft, shriveled, or showing signs of rot, as they may struggle to thrive once planted in the soil.

Choose Native And Adapted Species

Opting for native or well-adapted bulb species can enhance the resilience and sustainability of your garden. Native bulbs are often well-suited to the local climate and soil conditions, requiring minimal intervention to thrive. They also provide important resources for native pollinators and wildlife. When choosing bulbs, consider selecting species that are indigenous to your region or ones that have proven to be well-adapted to similar environmental conditions. This approach can contribute to a more ecologically balanced and low-maintenance garden ecosystem.

By carefully considering these factors, you can curate a diverse and visually appealing collection of bulbs that will grace your garden with a profusion of springtime blooms.

Preparing The Soil And Site For Planting

The success of your bulb planting endeavors greatly depends on the quality of the soil and the suitability of the planting site. Proper preparation of the soil and the selection of an ideal location are essential for facilitating healthy growth and abundant blooms. Here are the crucial steps for preparing the soil and site for planting bulbs in spring.

Assess Drainage And Soil Quality

Before planting, assess the drainage characteristics and overall quality of the soil in the chosen area. Bulbs generally thrive in well-drained soil that is rich in organic matter. To improve drainage in heavy or poorly draining soil, consider incorporating organic amendments such as compost, aged manure, or peat moss. These organic materials enhance soil structure, promote aeration, and increase water retention capacity, creating an optimal environment for bulb development.

Determine Sunlight Exposure

Identify the sunlight exposure of the planting site to ensure that it aligns with the specific requirements of the chosen bulbs. Ideally, select locations that receive the appropriate amount of sunlight based on the preferences of the bulbs being planted. Full sun-loving bulbs should be placed in areas that receive at least 6 to 8 hours of direct sunlight per day, while bulbs that thrive in partial shade may be suited for locations with dappled sunlight or areas that receive filtered light throughout the day.

Clear The Planting Area

Clear the designated planting area of any weeds, debris, or competing vegetation that may hinder the growth of the bulbs. Removing these obstructions promotes healthier soil conditions and reduces competition for water and nutrients, allowing the bulbs to establish themselves more effectively.

Soil Ph Testing And Adjustment

Conduct a soil pH test to determine the acidity or alkalinity of the soil. Most spring-blooming bulbs prefer slightly acidic to neutral soil conditions with a pH range of 6.0 to 7.0. If the soil pH deviates significantly from this range, consider making adjustments by incorporating appropriate amendments to optimize the soil pH for bulb growth. Lime can be added to raise the pH of acidic soil, while elemental sulfur or acidic organic materials can be used to lower the pH of alkaline soil.

Create Planting Beds And Borders

Depending on your garden layout and design preferences, you may choose to plant bulbs in dedicated beds, borders, or mixed perennial plantings. Prepare the planting areas by creating well-defined beds or borders and determining the desired arrangement and spacing for the bulbs. For a naturalistic look, consider planting bulbs in drifts or clusters rather than in formal, symmetrical arrangements.

Incorporate Organic Matter

To enrich the soil and provide essential nutrients for the bulbs, incorporate organic matter into the planting beds. Well-rotted compost, aged manure, or organic soil amendments can be mixed into the soil to enhance its fertility, improve water retention, and promote microbial activity. This creates a nourishing growing environment that supports the healthy establishment and development of the bulbs.

By performing these preparatory tasks, you can create an optimal growing environment for your bulbs, setting the stage for a flourishing display of spring blossoms.

Tools And Materials Required For Planting

To execute the planting of bulbs in spring effectively, it is important to have the right tools and materials at your disposal. Proper tools and equipment not only streamline the planting process but also contribute to the overall success and health of the bulbs. Here is a list of essential tools and materials required for planting bulbs in spring.

Gardening Gloves

Durable gardening gloves are essential for protecting your hands while handling soil, bulbs, and potentially sharp gardening tools. Choose gloves that provide adequate dexterity and protection from thorns, rough surfaces, and soil-borne organisms.

Hand Trowel Or Bulb Planter

A hand trowel or bulb planter is indispensable for digging planting holes of the appropriate depth and width. These tools allow for precise placement of the bulbs and ensure that they are planted at the correct depth for optimal growth.

Soil Amendments

Depending on the soil quality and pH of your planting site, you may need soil amendments such as compost, aged manure, peat moss, lime, or elemental sulfur. Have these amendments on hand for incorporating into the soil to enhance its fertility and structure.

Organic Fertilizer

Organic fertilizers formulated for bulb planting provide essential nutrients that support the initial growth and establishment of the bulbs. Look for fertilizers specifically tailored for bulbs, as they often contain the appropriate balance of nitrogen, phosphorus, and potassium to promote vigorous root development and robust flowering.

Watering Can Or Hose

A reliable watering can or garden hose equipped with a gentle spray attachment is necessary for providing the freshly planted bulbs with thorough watering. Ensuring that the bulbs receive adequate moisture at the time of planting is crucial for their initial hydration and root establishment.

Mulch

Organic mulch, such as shredded bark, straw, or compost, serves as an insulating layer that helps regulate soil temperature, retain moisture, and suppress weed growth. Apply a layer of mulch over the planted area to protect the bulbs and promote favorable growing conditions.

Marking Tools

To keep track of the location and variety of bulbs planted, consider using marking tools such as plant labels, durable wooden stakes, or waterproof markers. Labeling the planted areas helps you identify the bulbs as they emerge and grow, preventing accidental disturbance or damage.

Pruning Shears

Although not directly used for bulb planting, pruning shears may come in handy for tidying up any existing vegetation near the planting area or for conducting light pruning of nearby shrubs and perennials. Keeping your pruning shears readily accessible ensures that you can address any overgrowth or obstructions during the planting process.

Protective Netting Or Wire Mesh

If you are planting bulbs in areas frequented by digging animals such as squirrels or rodents, consider having protective netting or wire mesh available to deter them from disturbing the newly planted bulbs. Securing the planting area with protective barriers can safeguard the bulbs from potential foraging and damage.

Garden Journal Or Notebook

Maintain a garden journal or notebook to record details of your bulb planting activities, including the varieties planted, planting dates, and any observations or specific care instructions. This documentation provides valuable reference material for future gardening endeavors and helps track the performance of different bulb varieties over time.

By assembling these tools and materials, you can ensure that the process of planting bulbs in spring is efficient, organized, and conducive to the successful establishment of your floral display.

Planting bulbs in spring is an immensely gratifying pursuit that rewards gardeners with an explosion of color and fragrance. By carefully selecting suitable bulbs, preparing the soil and site, and utilizing the right tools and materials, you can set the stage for a spectacular spring floral showcase. From early-blooming crocuses to majestic tulips and fragrant hyacinths, the diverse array of spring bulbs offers endless possibilities for creating enchanting garden landscapes. With proper planning and attention to detail, your efforts in planting bulbs in spring will yield a bountiful display of blooms that brighten your outdoor space and provide a captivating spectacle for all to enjoy.

How To Plant Bulbs For Optimal Growth

Planting bulbs in spring is an exciting and rewarding endeavor. Bulbs are underground storage organs that contain all the necessary nutrients and energy for a plant to grow and bloom. Spring-blooming bulbs are a popular choice as they bring vibrant colors and fresh scents to our gardens after the long winter months. Tulips, daffodils, hyacinths, and crocuses are some of the most common spring-blooming bulbs that can be planted in spring.

Planting bulbs properly is crucial for their growth and development. Here are the steps to plant bulbs in spring:

Choose healthy bulbs: Selecting healthy bulbs is the first step towards successful growth. Look for bulbs that are plump, firm, and free from any signs of damage or disease. Avoid bulbs that are soft, shriveled, or have mold growing on them.
Select the right location: Most spring-blooming bulbs prefer a sunny location with well-drained soil. Before planting, make sure the area you choose receives at least 6 hours of direct sunlight per day and has soil that drains well. Bulbs generally don’t do well in soggy or waterlogged soil.
Prepare the soil: Before planting, it’s important to prepare the soil to create an ideal growing environment for bulbs. Remove any weeds, rocks, or debris from the planting area. Loosen the soil using a garden fork or tiller to a depth of at least 10-12 inches. This will help improve drainage and allow the bulbs’ roots to penetrate easily.
Add organic matter: Adding organic matter, such as compost or well-rotted manure, can greatly improve the soil’s fertility and structure. Spread a layer of organic matter on top of the loosened soil and mix it in thoroughly to a depth of 4-6 inches. This will enrich the soil, improve its moisture-holding capacity, and provide essential nutrients to the bulbs.
Dig the planting holes: Use a garden trowel or bulb planter to dig individual holes for each bulb. The size of the hole should be roughly two to three times deeper than the height of the bulb. This will vary depending on the type of bulb, so refer to the specific instructions provided by the bulb manufacturer. Digging individual holes helps to ensure the bulbs are planted at the correct depth and prevents overcrowding.

Proper Spacing And Depth For Planting Bulbs

Proper spacing and depth are important factors for the successful growth and flowering of bulbs. Each type of bulb has its own specific planting depth requirements, which generally range from 2 to 4 times the bulb’s height. Here are some general guidelines:

Tulips: Tulip bulbs should be planted 6 to 8 inches deep, with a spacing of 4 to 6 inches between bulbs. Larger varieties may require deeper planting depths.
Daffodils: Daffodil bulbs should be planted 6 to 8 inches deep, with a spacing of 4 to 6 inches between bulbs. Smaller varieties can be planted slightly shallower.
Hyacinths: Hyacinth bulbs should be planted 4 to 6 inches deep, with a spacing of 4 to 6 inches between bulbs.
Crocuses: Crocus bulbs should be planted 3 to 4 inches deep, with a spacing of 2 to 3 inches between bulbs.

When planting bulbs, it’s essential to follow the recommended spacing to allow enough room for the bulbs to grow, avoid overcrowding, and promote proper air circulation. Crowded bulbs may not have enough space to develop roots and can become more susceptible to diseases.

Once the holes are dug, carefully place the bulbs in the holes with the pointed side facing upwards. Be gentle with the bulbs to prevent any damage. It is also advisable to plant bulbs in groups or clusters, rather than in straight lines, as this provides a more natural and visually appealing display when they bloom.

Caring For Bulbs After Planting

After planting the bulbs, there are several key steps you should take to ensure their continued health and growth. Here are some important care tips for bulbs:

Mulch the planting area: After planting, apply a layer of organic mulch, such as wood chips or shredded leaves, to the planting area. This will help conserve moisture, suppress weed growth, and provide insulation for the bulbs during temperature fluctuations.
Protect bulbs from pests: Bulbs can attract pests like squirrels, rabbits, and mice. To protect your bulbs from these critters, you can cover the planting area with wire mesh or use repellents. Additionally, planting bulbs that are less attractive to these animals, such as daffodils, can help deter them from digging up or eating the bulbs.
Monitor soil moisture: Monitor the moisture levels in the soil regularly, especially during dry periods. Bulbs need adequate moisture to establish their roots and grow properly. Avoid over-watering, as this can lead to root rot and other fungal diseases. A good rule of thumb is to keep the soil evenly moist but not waterlogged.
Remove spent flowers: Once the bulbs have finished blooming, it’s important to remove the spent flowers. This process, known as deadheading, prevents the plant from expending energy on seed production and allows it to focus on storing energy in the bulb for the next year’s growth. Wait until the foliage turns yellow and dies back naturally before removing it.
Avoid cutting back foliage: After the flowers have faded, the foliage of bulbs is still essential for the plant’s growth. The leaves gather energy from the sun through photosynthesis and transfer it to the bulb. It’s crucial to allow the foliage to wither and die back naturally. Cutting back the foliage prematurely can weaken the bulb and reduce its ability to store energy for future growth.

Watering And Fertilizing Bulbs In Spring

Proper watering and fertilizing practices are important for the healthy growth and development of bulbs. Here’s what you need to know:

Watering: Bulbs should be watered regularly during their growing season, especially during dry spells. Provide enough water to keep the soil evenly moist, but avoid overwatering, as this can lead to rotting. A general rule is to provide about 1 inch of water per week. However, it’s important to adjust watering according to the specific needs of the bulbs and the weather conditions.
Fertilizing: Bulbs require nutrients for healthy growth and flowering. Before planting, incorporating organic matter into the soil provides a good baseline of nutrients. However, it’s also beneficial to apply a slow-release bulb-specific fertilizer during the growing season. Apply the fertilizer according to the manufacturer’s instructions, usually in early spring or right after planting. This will provide the necessary nutrients to support bulb growth and help ensure vibrant blooms.
Avoid excessive nitrogen: When selecting a fertilizer for bulbs, it’s important to avoid those with high nitrogen content. Nitrogen promotes foliage growth at the expense of flower development in bulbs. Look for a fertilizer with a lower nitrogen content but higher levels of phosphorus and potassium, as these nutrients are essential for flower production.
Fertilizer application after flowering: After the bulbs have finished flowering, it’s a good practice to apply a balanced, slow-release fertilizer to replenish the nutrients in the bulb. This will help strengthen the bulb for the following year’s growth and ensure a prolific display of blooms in the future.

Planting bulbs in spring is a wonderful way to add beauty and color to your garden. By following the proper planting techniques, such as selecting healthy bulbs and providing the correct spacing and depth, you can ensure their optimal growth and abundant blooms. Caring for the bulbs after planting, including mulching, protecting them from pests, and providing adequate water and nutrients, will further enhance their health and vitality.

Remember, each bulb variety may have specific requirements, so it's essential to read the manufacturer's instructions for individual guidance. With the right care and attention, your spring-blooming bulbs will bring joy and delight to your garden year after year.

How To Prevent Diseases And Pests In Bulbs

Planting bulbs in spring is an excellent way to introduce vibrant colors and fresh blooms into your garden. Bulbs are a popular choice among gardeners due to their ease of planting and care, and their ability to produce stunning flowers year after year.

When planting bulbs in spring, it is essential to take preventative measures to protect them from diseases and pests. Here are a few tips to help you maintain healthy bulbs:

Choose Healthy Bulbs: Start with high-quality bulbs from reputable sources. Look for bulbs that are firm, plump, and free from any signs of mold, rot, or damage.
Proper Soil Preparation: Bulbs thrive in well-draining soil. Prior to planting, ensure the soil is loose and enriched with organic matter such as compost or well-rotted manure. This will provide the bulbs with essential nutrients and create an optimal growing environment.
Planting Depth: Bulbs should be planted at the appropriate depth to protect them from pests and diseases. As a general rule, bulbs should be planted at a depth that is three times their diameter. For example, if a bulb is 2 inches in diameter, it should be planted 6 inches deep.
Use Bulb Fertilizer: To promote healthy growth and development, use a bulb-specific fertilizer. This type of fertilizer is specially formulated with the essential nutrients bulbs need, such as phosphorus and potassium. Follow the manufacturer’s instructions for application rates and timing.
Watering: Proper watering is crucial for the overall health of bulbs. During their active growth period, bulbs should be watered regularly but not excessively. Aim to keep the soil consistently moist, but avoid overwatering, as this can lead to rot and fungal diseases.
Rotate Bulb Plantings: To prevent the buildup of diseases and pests in the soil, it is advisable to rotate the planting locations of your bulbs each year. This helps to disrupt the life cycles of pests and reduces the risk of infection.

Mulching Around Bulbs To Improve Growth

Mulching around bulbs is a beneficial practice that can improve their growth and overall health. Here’s why you should consider mulching and how to do it effectively:

Benefits of Mulching:

Moisture Retention: Mulch helps to conserve moisture in the soil by reducing evaporation. This is particularly important for bulbs, as they require consistent moisture during their active growth phase.
Temperature Regulation: Mulch acts as an insulating layer, protecting bulbs from extreme temperature fluctuations. It keeps the soil cooler in hot weather and prevents it from freezing during cold spells.
Weed Control: A layer of mulch serves as a natural weed suppressant, preventing weed seeds from germinating and competing with bulbs for nutrients.

Mulching Tips:

Choose the Right Mulch: Organic mulches such as wood chips, straw, or shredded leaves are ideal for mulching around bulbs. These types of mulch gradually decompose, enriching the soil with nutrients over time. Avoid using synthetic mulches, as they can hinder water penetration.
Apply the Mulch Properly: Apply a layer of mulch around 2-3 inches thick, taking care not to bury the bulbs too deeply. Leave a small gap around the base of each bulb to allow for air circulation and prevent rot.
Timing is Important: Mulching should be done after the soil has warmed up in the spring. Applying mulch too early can delay the emergence of bulbs, as it keeps the soil cooler.
Maintain the Mulch Layer: Check the mulch periodically and replenish it as needed. Over time, the mulch may break down or be displaced by wind or heavy rain. Replenishing the mulch ensures that bulbs continue to benefit from its protective properties.

Enhancing Garden Landscape With Bulbs

Bulbs are not only a beautiful addition to any garden, but they can also be used to enhance the overall landscape design. Here are some creative ways to incorporate bulbs into your garden:

Mass Plantings: Create stunning displays of color by planting bulbs in large groups or clusters. This technique works particularly well with bulbs that produce flowers of the same variety or color. Mass plantings can have a striking impact in borders, along pathways, or in open lawn areas.
Succession Planting: Extend the blooming period by using bulbs with different flowering times. By strategically selecting bulbs that bloom at different intervals, you can ensure a continuous display of flowers throughout the spring and even into the summer.
Layering: Layering bulbs refers to planting different types of bulbs at various depths in the same location. This technique allows for a more varied and visually appealing display of flowers. Plant larger bulbs at deeper depths, followed by medium-sized bulbs, and finish with smaller bulbs planted closer to the surface.
Naturalizing: Naturalizing bulbs involves planting them in a way that mimics their natural habitat. This creates a more organic and relaxed feel to your garden. Scatter bulbs in random patterns throughout your garden beds, allowing them to self-seed and spread naturally over time.
Containers and Pots: Bulbs can be easily grown in containers, making them a versatile option for small spaces or as accents on patios and balconies. Choose bulbs that are appropriate for container gardening and select a pot or container that provides adequate drainage. Arrange bulbs in an aesthetically pleasing manner and place them in an area with sufficient sunlight.

Tips For Success In Growing Bulbs

To ensure successful growth and blooming of your bulbs, consider these additional tips:

Choose the Right Bulbs: Select bulbs that are suitable for your growing zone and the specific conditions of your garden. Some bulbs, like tulips and daffodils, prefer full sun, while others, like lilies, thrive in partially shaded areas.
Plan Ahead: Before planting, consider the height, color, and flowering time of the bulbs you choose. This will allow you to plan your planting arrangements and ensure a harmonious and cohesive garden design.
Implement Good Drainage: Bulbs are prone to rot if they are planted in soil that retains excessive moisture. If you have heavy clay soil or poor drainage, consider planting bulbs in raised beds or amending the soil with organic matter to improve drainage.
Stagger Planting: To enjoy a longer blooming season, stagger your planting by choosing bulbs with different flowering times. This will ensure that you have a continuous display of blooms throughout the spring.
Deadhead Spent Flowers: As the flowers fade, remove the spent blooms by gently pinching or cutting them off. This prevents the plant from diverting energy into seed production and encourages the formation of new flowers.
Allow Foliage to Wither Naturally: After the flowers have finished blooming, allow the foliage to wither and turn yellow naturally. This allows the bulbs to gather energy for next year’s growth. Avoid cutting back or removing the foliage until it has completely withered.
Divide and Transplant Bulbs: Over time, bulbs can become overcrowded, leading to poor performance and reduced flowering. To rejuvenate bulbs, dig them up and divide them every few years. Replant the divisions in well-prepared soil, spacing them appropriately.

Conclusion

Planting bulbs in spring is a delightful and rewarding gardening activity. By following the tips and techniques outlined in this guide, you can ensure the successful growth and blooming of your bulbs, creating a vibrant and beautiful garden. Remember to take necessary steps to prevent diseases and pests, mulch around bulbs for improved growth, and consider different ways to enhance your garden landscape with bulbs. With proper care and attention, your spring bulbs will thrive and provide years of stunning color and beauty. Happy planting!

FAQS

What Is The Best Time To Plant Bulbs In Spring?

The ideal time to plant bulbs in spring is when the soil is cool, but not frozen. In most regions, this falls between late February and mid-May. It’s important to plant before the soil temperature becomes too warm, as this can prevent the bulbs from properly establishing roots.

What Is The Proper Planting Depth For Bulbs In Spring?

The general rule of thumb is to plant bulbs at a depth equal to three times their height. For example, if a tulip bulb is 2 inches tall, it should be planted at a depth of 6 inches. However, some bulbs may have specific planting depths, so it’s important to read the instructions on the packaging.

How Do I Prepare The Soil For Planting Bulbs In Spring?

Before planting, it’s important to loosen the soil and remove any weeds or debris. Adding organic matter, such as compost, can also help improve the soil’s drainage and provide necessary nutrients for the bulbs. If the soil is especially heavy or clay-like, you may also want to consider adding some sand to improve drainage.

Do I Need To Water Bulbs After Planting Them In Spring?

Yes, bulbs should be watered after planting to help them establish their roots. It’s important to keep the soil consistently moist, but not waterlogged, to prevent rot. After the bulbs have sprouted, you can decrease watering frequency, but make sure to keep the soil slightly damp.

How Do I Care For Bulbs After They Have Finished Blooming In Spring?

Once the blooms have faded, it’s important to leave the foliage intact until it turns yellow and wilts. This allows the bulbs to absorb energy for next year’s growth. You can continue to water the bulbs as needed, but make sure to stop when the foliage dies back. Once the foliage has completely withered, it can be removed.