How To Plant Celery Seeds [ Full Guide ]

Celery is a versatile and nutritious vegetable that can be easily grown in home gardens. Planting celery from seeds allows you to nurture the plants from the very beginning, ensuring a healthy and productive harvest. In this comprehensive guide, we will walk you through the process of planting celery seeds, from choosing the best location to preparing the soil and selecting the appropriate planting method.

Quick Answer: How To Plant Celery Seeds

To plant celery seeds, choose a sunny location with well-draining soil. Prepare the soil by adding compost and ensuring a pH level of 6.0-7.0. Plant the seeds indoors 10-12 weeks before the last expected frost or directly in the garden after the danger of frost has passed. Sow the seeds thinly, barely covering them with soil. Keep the soil consistently moist and provide adequate sunlight. Transplant the seedlings when they are 2-3 inches tall and continue to provide consistent moisture and proper care throughout the growing season.

Choosing The Right Location For Planting Celery Seeds

Selecting the right location for planting celery seeds is crucial for the success of your crop. Celery thrives in a sunny spot that receives at least 6-8 hours of sunlight per day. Additionally, it’s essential to choose a location with well-draining soil to prevent waterlogging, which can lead to root rot.

When planting celery, consider the microclimate of your garden. If you live in a region with hot summers, choose a location that offers some shade during the hottest part of the day to protect the plants from excessive heat. Conversely, if you reside in a cooler climate, aim for a spot that maximizes sun exposure to promote robust growth.

Preparing The Soil For Celery Seed Planting

Before planting celery seeds, it’s important to prepare the soil to provide an optimal growing environment for the plants. Celery thrives in fertile, moisture-retentive soil with a pH level between 6.0 and 7.0. Start by testing the soil pH using a simple at-home testing kit available at gardening stores. If the pH level falls outside the ideal range, amend the soil accordingly to bring it within the recommended parameters.

To improve the soil structure and fertility, incorporate organic matter such as compost or well-rotted manure. Work the organic material into the soil to a depth of about 12 inches, ensuring that it is thoroughly mixed. This will help enhance the soil’s water retention capacity while providing essential nutrients for healthy celery growth.

When To Plant Celery Seeds

The timing of planting celery seeds is crucial, as celery is a cool-season crop that requires specific conditions for successful germination and growth. In most regions, it’s advisable to start celery seeds indoors approximately 10 to 12 weeks before the last expected frost date. This allows the seeds to germinate and the seedlings to establish before being transplanted into the garden.

If you prefer to sow the seeds directly in the garden, wait until the danger of frost has passed and the soil has warmed up to at least 50°F (10°C). Planting celery seeds too early in cold, damp soil can lead to poor germination and weak seedling growth. Therefore, it’s essential to time the planting to coincide with favorable growing conditions.

The Best Method For Planting Celery Seeds

Starting Seeds Indoors

Starting celery seeds indoors provides a head start on the growing season, allowing for better control over the germination process and early growth of the seedlings. Follow these steps for successful indoor seeding:

1. Selecting Containers

Choose shallow trays or cell packs with drainage holes to sow the celery seeds. These containers should be at least 2-3 inches deep and filled with a well-draining seed starting mix.

2. Sowing Seeds

Sow the celery seeds thinly and evenly across the surface of the soil, ensuring that they are not overcrowded. Press the seeds lightly into the soil, but avoid burying them too deep, as celery seeds require light for germination.

3. Providing Warmth And Moisture

Cover the containers with a plastic dome or clear plastic wrap to retain moisture and create a greenhouse-like environment. Place the containers in a warm location with indirect sunlight, aiming for a temperature range of 70-75°F (21-24°C) for optimal germination.

4. Germination And Care

Keep the soil consistently moist by misting it with a spray bottle or using a gentle watering technique. Once the seeds germinate, remove the covering and provide adequate ventilation to prevent damping off. Continue to water the seedlings as needed, ensuring that the soil remains evenly moist but not waterlogged.

5. Transplanting

When the celery seedlings have developed 2-3 true leaves and are approximately 2-3 inches tall, they are ready to be transplanted into individual pots or a larger seedling tray. Handle the delicate seedlings with care to avoid damaging the tender roots.

Planting Seeds Directly In The Garden

If you prefer to skip the indoor seeding process, you can directly sow celery seeds in the garden. Follow these steps for successful direct seeding:

1. Soil Preparation

Prepare the garden bed by enriching the soil with compost and ensuring that it is well-draining. Rake the soil to create a smooth surface for sowing the seeds.

2. Sowing The Seeds

Sow the celery seeds thinly in furrows or rows, barely covering them with a thin layer of soil. Space the seeds approximately 8-10 inches apart to allow room for the plants to mature.

3. Watering And Maintenance

Keep the soil consistently moist after sowing the seeds, ensuring that it does not dry out during the germination period. Once the seedlings emerge, thin them to achieve the desired spacing, retaining the healthiest and strongest plants while removing any overcrowded or weak seedlings.

Planting celery seeds can be a rewarding experience, allowing you to cultivate fresh and flavorful celery right in your own garden. By choosing the right location, preparing the soil, and following the appropriate planting method, you can set the stage for successful celery cultivation. Whether you opt for indoor seeding or direct sowing in the garden, providing consistent moisture, proper care, and attention to the specific requirements of celery plants will ensure a bountiful harvest of this nutritious vegetable. With the guidance provided in this comprehensive article, you are well-equipped to embark on your celery seed planting journey and enjoy the satisfaction of growing your own delicious and healthy celery crop.

How To Properly Handle And Store Celery Seeds

Celery (Apium graveolens) is a nutritious and versatile vegetable that can be enjoyed raw, cooked, or used in soups and salads. Growing celery from seeds can be a rewarding experience for gardeners, as it allows them to have a fresh supply of this crispy vegetable right from their own backyard. However, planting celery seeds requires proper handling, careful preparation, and attention to the specific requirements of the plant.

RELATED  How To Plant Tomatoes In Container [ Full Guide ]

Proper handling and storage of celery seeds are crucial for ensuring their viability and germination success. Here are some tips to follow:

  1. Choose quality seeds: Begin with high-quality celery seeds. Look for fresh, viable seeds that are firm, plump, and dark brown in color. Avoid seeds that have a dull appearance or are lightweight, as these may not germinate well.

  2. Use the right container: Store your celery seeds in airtight containers to protect them from moisture, light, and temperature fluctuations. Small glass jars or sealable plastic bags are ideal for this purpose. Label the containers with the date of purchase or harvest to keep track of their freshness.

  3. Keep seeds dry: Celery seeds, like most vegetable seeds, should be kept dry to prevent mold or rot. Place a desiccant packet or a small amount of rice in the containers to absorb any moisture that may enter. Store the seeds in a cool, dry location, such as a pantry or a refrigerator.

  4. Maintain proper temperature: Celery seeds prefer a cool storage temperature of around 40°F (4°C). If storing in the refrigerator, place the containers in the vegetable crisper or another area with a stable temperature. Avoid freezing the seeds, as extreme cold can damage their viability.

Tips For Maximizing Germination Success Of Celery Seeds

Celery seeds are notorious for their slow and unreliable germination. However, with the right techniques and care, you can increase the chances of successful germination. Here are some tips to maximize germination success:

  1. Start seeds indoors: Celery seeds have a long germination period of up to two to three weeks. To get a head start and ensure a longer growing season, start the seeds indoors about 10 to 12 weeks before the last frost date in your area. This will give the seedlings ample time to develop before transplanting them outdoors.

  2. Pre-sprout the seeds: To speed up germination, you can pre-sprout celery seeds before planting them. Soak the seeds in warm water for 24 to 48 hours before sowing. Then, transfer them to a damp paper towel or a seedling tray lined with moistened peat moss. Keep the seeds moist and warm (around 70°F or 21°C) until tiny roots emerge, which usually takes about one week.

  3. Provide optimal soil conditions: Celery prefers fertile, well-draining soil with a pH level between 6.0 and 6.8. Prepare the seed-starting mix by combining equal parts of sterile potting soil, vermiculite, and compost. Fill seed trays or small pots with this mix, leaving about a ¼ inch of space at the top.

  4. Sow seeds thinly: When sowing the pre-sprouted celery seeds, space them out evenly on the surface of the soil, approximately ¼ inch apart. Gently press the seeds onto the soil, ensuring they make good contact with it. Do not bury the seeds deep, as they require light to germinate.

  5. Cover lightly: Once the seeds are scattered on the soil, cover them lightly with a thin layer of vermiculite or finely sieved compost. This will provide a protective layer without blocking the light necessary for germination. Mist the soil lightly with water to settle it.

  6. Provide consistent moisture: Celery seeds require consistent moisture to germinate successfully. Use a spray bottle or a gentle mist nozzle on a watering can to water the seeds regularly. Avoid overwatering, which can lead to rot and fungal diseases.

  7. Maintain adequate warmth: Celery seeds germinate best in a warm environment, with temperatures around 70°F (21°C). To maintain the required warmth, consider using a heat mat or placing the seed trays near a heat source. Once germination occurs, move the trays to a well-lit area, but avoid exposing the seedlings directly to harsh sunlight.

  8. Thin out seedlings: Once the celery seedlings have developed their first true leaves, thin them out to ensure enough space for each plant to grow. Remove weaker seedlings, leaving only the strongest ones spaced about 2 inches apart. This will prevent overcrowding and allow better airflow around the plants.

Caring For Seedlings After Planting

Once the celery seedlings have emerged and are growing, they require proper care to thrive. Here are some essential tips for caring for the seedlings:

  1. Provide adequate light: Celery seedlings need bright light to grow compact and sturdy. Position them under fluorescent grow lights or near a south-facing window that receives at least 6 to 8 hours of sunlight daily. If using grow lights, keep them about 2 inches above the top of the seedlings.

  2. Water consistently: Water the celery seedlings regularly, keeping the soil slightly moist but not soggy. Stick your finger about an inch into the soil to check its moisture level. If it feels dry, apply water until it is evenly damp. Avoid letting the seedlings dry out completely or sit in waterlogged soil.

  3. Adjust temperature and humidity: Maintain a temperature of around 60 to 70°F (15 to 21°C) during the day and slightly lower at night. Protect the seedlings from cold drafts, as they prefer a stable environment. If the air is too dry, especially during winter months, use a humidifier or place trays with water near the seedlings to increase humidity.

  4. Fertilize occasionally: After the celery seedlings have established their second set of leaves, you can start fertilizing them once a week with a balanced liquid fertilizer diluted to half strength. Avoid using excessive nitrogen-rich fertilizers, as they can lead to weak and overly leafy growth.

  5. Harden off before transplanting: Approximately one to two weeks before transplanting the celery seedlings into the garden, gradually expose them to outdoor conditions. Start by placing them in a shaded and protected spot for a few hours a day, gradually increasing the exposure to direct sunlight and wind. This process, known as hardening off, helps the seedlings acclimate to the outdoor environment and reduces transplant shock.

Transplanting Celery Seedlings Into The Garden

Once the celery seedlings have grown to a suitable size and the risk of frost has passed, it is time to transplant them into the garden. Follow these steps for successful transplantation:

  1. Choose a suitable garden location: Celery requires a sunny spot in the garden with fertile, moisture-retaining soil. The soil should be well-draining, but it should also hold moisture evenly. Prepare the garden bed by incorporating organic matter, such as compost or well-rotted manure, to enhance the soil’s fertility and water-holding capacity.

  2. Prepare the soil: Loosen the soil in the garden bed to a depth of at least 8 to 10 inches. Remove any weeds or debris and break up large clumps of soil. Smooth the surface of the soil with a rake.

  3. Transplant the seedlings: Dig a hole in the prepared garden bed that is slightly larger than the size of the seedling’s root ball. Gently remove the celery seedling from its container or seed tray by holding onto the leaves, not the stem. Place the seedling in the hole, ensuring that the top of the root ball is level with the surrounding soil. Space each plant at least 10 to 12 inches apart to allow for their growth and airflow between them.

  4. Water and mulch: After transplanting, water the seedlings thoroughly to settle the soil around their roots and promote establishment. Apply a layer of organic mulch, such as straw or shredded leaves, around the seedlings to conserve moisture, suppress weeds, and regulate soil temperature.

  5. Provide ongoing care: Continue to water the celery plants regularly, ensuring the soil stays consistently moist. Avoid wetting the foliage, as this can lead to disease. Monitor for pests, such as aphids or slugs, and take appropriate measures to control them. If necessary, provide support to the celery plants by inserting stakes or placing a trellis nearby to prevent them from bending or toppling under their weight.

  6. Harvesting: Celery plants usually take around 16 to 18 weeks from transplanting to reach maturity. Harvest the stalks when they have grown to the desired size, typically when they are 8 to 10 inches long and 1 to 1.5 inches in diameter. Cut the stalks at the base, close to the ground, using a sharp knife or pruning shears. Leaving a few inner stalks to grow will encourage regrowth and a longer harvest period.

Planting celery seeds may require some extra care and attention, but the reward of homegrown, flavorful celery is well worth the effort. By properly handling and storing the seeds, maximizing germination success, caring for the seedlings, and transplanting them into the garden, you can enjoy a bountiful harvest of this crunchy and nutritious vegetable. So, roll up your sleeves and embark on this exciting journey of growing your own celery from seeds. Happy gardening!

Maintaining Proper Watering And Fertilization For Growing Celery

Celery, scientifically known as Apium graveolens, is a popular vegetable known for its crisp texture and unique taste. It is a cool-season crop that can be grown from seeds to maturity within a few months. Planting celery seeds may seem daunting to some, but with the right techniques and proper care, you can successfully cultivate this versatile vegetable in your own garden.

RELATED  How To Plant Jalapenos [ Full Guide ]

Celery seeds are tiny and require a bit of extra attention during the germination process. They can be started indoors or directly sown outdoors, depending on your preference and climate.

1. Soil Preparation: Before planting celery seeds, it is crucial to prepare the soil properly. Celery prefers a loamy, well-draining soil with a pH level between 6.0 and 7.0. Start by loosening the soil with a garden fork or tiller to a depth of 8 to 10 inches. Remove any rocks, weeds, or debris from the planting area.

2. Fertilization: Celery is a heavy feeder and requires a nutrient-rich soil to thrive. Prior to sowing the seeds, incorporate well-rotted compost or aged manure into the soil to boost its fertility. A balanced fertilizer with a nitrogen-phosphorus-potassium (NPK) ratio of 10-10-10 or 14-14-14 can also be applied according to the instructions on the packaging.

3. Seed Sowing: Celery seeds are incredibly small and can be difficult to handle. To facilitate the sowing process, mix the celery seeds with sand or vermiculite. Fill small seed trays or seedling pots with a soilless seed-starting mix. Scatter the mixed seeds evenly over the surface of the mix and gently press them down, ensuring good seed-to-soil contact. Sprinkle a thin layer of the seed-starting mix over the seeds to cover them.

4. Moisture Management: Celery seeds require consistent moisture for successful germination. Keep the seed trays or pots consistently moist by misting them with water or using a spray bottle when necessary. Avoid overwatering, as this can lead to fungal diseases or rot. Place a plastic cover or a clear plastic bag over the trays or pots to create a mini greenhouse effect and retain moisture. Check the trays daily to ensure the soil remains moist but not waterlogged.

5. Transplanting: Once the celery seedlings have developed a couple of true leaves, they can be transplanted into individual pots or directly into the garden bed. When transplanting, handle the delicate seedlings with care to avoid damaging their roots. Dig a hole deep enough to accommodate the entire root system of the seedling and gently place it into the hole. Backfill with soil and lightly firm it around the base of the seedling. Space the transplants at least 12 inches apart in rows that are approximately 24 inches apart.

6. Watering Requirements: Celery has shallow roots and requires consistent watering. Provide the plants with an inch of water per week through either rainfall or irrigation. Avoid overhead watering, as wet foliage can increase the likelihood of diseases. Instead, focus on watering the soil directly at the base of the plants or consider using a drip irrigation system. Mulching around the base of the plants can help retain moisture, suppress weeds, and maintain a more uniform soil temperature.

7. Fertilizing Celery: To promote healthy growth and development, it is essential to fertilize celery regularly. Apply a balanced fertilizer with a higher nitrogen content, such as a 20-10-10 or 16-16-8 formulation, every two to three weeks during the growing season. Follow the manufacturer’s instructions on the packaging for dosage and application methods. Avoid overfertilizing, as it can lead to excessive foliage growth at the expense of stalk development.

Protecting Celery Plants From Pests And Diseases

1. Common Pests: Celery plants are susceptible to a variety of pests, including aphids, celery leaf miners, slugs, and snails. Regularly inspect your plants for any signs of pest damage, such as chewed leaves, holes, or sticky residues. To control aphids and other small insects, you can spray the plants with a mild soap and water solution or use insecticidal soap. For snails and slugs, set up beer traps or apply diatomaceous earth around the plants.

RELATED  How To Plant Lilac Tree [ Full Guide ]

2. Celery Diseases: Several diseases can affect celery, including early blight, late blight, bacterial soft rot, and fusarium wilt. To prevent the spread of diseases, practice crop rotation and avoid planting celery in the same area for at least three years. Ensure good air circulation by providing adequate spacing between plants and removing any infected or diseased plant material promptly. Mulching can also be beneficial, as it prevents soil-borne pathogens from splashing onto the leaves during rainfall.

3. Fungal Diseases: Celery is particularly susceptible to fungal diseases such as leaf blight and powdery mildew. Leaf blight appears as discolored, water-soaked spots on the leaves, which can eventually cause them to wither and die. Powdery mildew presents as a white, powdery coating on the leaves and stems. To prevent these diseases, avoid overhead watering and consider applying preventive fungicides, such as copper-based products, following the manufacturer’s instructions.

Harvesting And Storing Celery From Seed-grown Plants

1. Harvesting Time: Celery can be harvested once it reaches a desirable size and the stalks are firm and crisp. This typically occurs around 85 to 120 days after planting, depending on the variety. Start by cutting the outer stalks at the base, near the soil level, using a sharp knife or scissors. Harvest only what you need and leave the inner stalks to continue growing. This allows the plant to continue producing new growth for an extended harvest period.

2. Fall Harvest: In regions with mild temperatures, celery can be left in the ground until fall. As the weather cools, the flavor of celery intensifies and becomes even more delicious. However, be mindful of frost and protect the plants with row covers or cold frames if necessary.

3. Storage: Freshly harvested celery can be stored in the refrigerator for up to two weeks. Wrap the stalks tightly in plastic wrap or place them in a plastic bag to prevent moisture loss. For longer-term storage, blanch and freeze diced or sliced celery to maintain its texture and flavor. To blanch celery, briefly steam or blanch the pieces in boiling water for a few minutes, then cool them in ice water before patting them dry and freezing.

Troubleshooting Common Issues With Planting Celery Seeds

1. Slow Germination: Celery seeds have a reputation for slow and uneven germination. To speed up the germination process, consider pre-soaking the seeds in water for 24 hours before sowing. Alternatively, you can stratify the seeds by placing them in a sealed plastic bag with a small amount of damp vermiculite or peat moss and refrigerating them for a week. This method mimics the natural cold stratification process that celery seeds experience in the wild, breaking their dormancy and promoting germination.

2. Leggy Seedlings: If your celery seedlings appear tall and spindly, they may not be receiving enough light. Insufficient light causes the seedlings to stretch towards the nearest light source, resulting in weak and leggy stems. To prevent this, provide adequate light by placing the seedlings under grow lights or in a bright, south-facing window. If using artificial lights, ensure they are positioned close enough to provide sufficient brightness without overheating the seedlings.

3. Bitter Flavor: Occasionally, homegrown celery can develop a bitter flavor. This bitterness is often caused by stress or environmental factors, such as intense heat or irregular watering. To mitigate this issue, ensure consistent moisture levels by watering regularly and providing shade or mulch to prevent excessive heat. Additionally, selecting celery varieties that are known for their sweetness, such as ‘Tall Utah’ or “Golden Self-Blanching”, can enhance the flavor of your harvest.

4. Bolting: Bolting occurs when celery plants prematurely send up a flower stalk and start producing seeds. This typically happens when the plants experience a sudden temperature increase or prolonged exposure to high temperatures. To prevent bolting, choose heat-tolerant celery varieties and provide shade or use row covers during hot weather. Harvesting the outer stalks regularly can also divert the plant’s energy away from flowering and seed production.


Planting celery seeds may require extra care and attention, but the rewarding flavor and nutritional value of this vegetable make the effort worthwhile. By following the steps outlined in this article and providing adequate watering, fertilization, and protection against pests and diseases, you can successfully grow celery from seed. Remember to harvest at the appropriate time and properly store the crop for longer-term use. With patience and proper care, you can enjoy the fresh, crisp taste of homegrown celery in your favorite dishes.


What Is The Ideal Time To Plant Celery Seeds?

Celery seeds should be planted in spring, as soon as the soil can be worked, or approximately 2-3 weeks before the last frost date. This allows the seeds to germinate in cooler temperatures and produce a sturdier plant.

Can Celery Seeds Be Planted Directly In The Ground Or Should They Be Started Indoors?

Celery seeds can be started indoors or directly in the ground, depending on your growing zone and resources. If you have a short growing season, it is recommended to start them indoors to give them a head start.

How Deep Should I Plant Celery Seeds?

Celery seeds should be planted about 1/4 inch deep in well-draining, fertile soil. If starting indoors, use a seed starting mix and lightly sprinkle the seeds on top of the soil.

How Far Apart Should I Space Celery Seeds When Planting?

When planting celery seeds, space them about 6 inches apart in rows that are 1-2 feet apart. This allows enough room for the plants to grow and spread.

How Often Should I Water Celery Seeds After Planting?

Celery seeds should be kept consistently moist but not waterlogged. Water deeply once or twice a week, depending on weather conditions. Do not let the soil dry out completely, as this can cause stunted growth and tough stalks.