Tendercrisp Celery Seeds

Tendercrisp is a popular heirloom celery that produces flavourful heads of an extra-large size that keep well in the garden until late in the season. The plants grow dark-green stalks that measure about 12 inches at first joint and the mature plants reach about 3 feet tall.

Somewhat resistant to poorer soils and diseases, Tendercrisp is one of the easiest celeries to grow from seeds. The stalks and leaves have a traditional celery flavour and are tasty both raw and cooked. A truly versatile plant that can be harvested at any stage of growth.

- Latin Name: Apium graveolens dulce
- Days to Maturity: 90-105
- Life Cycle: Biennal, usually grown as an annual
- Canada Hardiness Zone: 8-9
- Start Indoors or Cold Frame: 10-12 weeks before transplanting outdoors

- Planting Depth: Press without covering
( Celery seeds require light to germinate.) 
- Days to Germination: 14-21
- Germination Optimal Soil Temperature: 21-25°C
- Seedlings Optminal Daytime Temperature: 16-21°C
- Days from transplanting to mature crop: 60-80
( Reduce the water for 7-10 days when hardening)
- Transplant Seedlings: 15-20 cm apart
- Direct Sowing: 2 weeks before final spring frost until 10-12 weeks before expected fall frost
- Seed Spacing: 15 seeds every 30 cm
- Thinning Seedlings: Progressively until 15-20 cm apart
- Row Spacing: 60-90 cm
- Plant Height: 30-60 cm
- Average Seeds Needed Per 10 m Row: 500
- Average Yield Per 10 m Row: 35 heads


Dense hearts of tall green stalks will reward the home gardener who accepts the challenge of growing this long season, cool weather vegetable. To get a head start on the season, celery seeds should be started 10-12 weeks before the last spring frost.

Spread seeds in flats, about 2 cm apart. You can firm the seeds into place, but there is no need to cover with soil. Celery seeds will require light to germinate, usually taking about 2-3 weeks. Set under lights for 16 hours/day and keep seeds moist by misting and/or bottom watering. Try to keep the ambient temperature an ideal 21°C.

When seedlings develop their second true leaf, either thin them out or transplant individuals into deeper pots. Prepare for transplanting by hardening off the young plants. Reduce watering a bit and expose gradually to the sun and outdoor elements. Cold weather can cause celery to bolt, so wait until night time lows stay above 4°C. Seedlings can be transplanted into the bed about 20-25 cm apart, water well.

Celery will thrive in cooler temperatures, rich soil and under full sun. Because of its shallow roots, mulch, thorough waterings and top dressing with fertilizer are good practices to enrich overall plant health.

Stalks can be tied together to keep from spreading. Practice blanching by covering or wrapping stalks with brown bag paper or cardboard. Do not cover the leaves. Sheltering from the sun will help prevent the development of bitter tasting stalks.

Celery can take up to 100 days to harvest. The whole bunch can be cut at once, but individual stalks can be continually picked throughout the fall until the last frost. Harvest stalks from the outside in when stalks reach 8 cm tall and enjoy a long season of celery's refreshing ribs.


- Celery has been cultivated for its seeds and leaves since antiquity as an aromatic and medicinal plant. The Italians domesticated celery as a vegetable in the 1500s, resulting in selections with solid stems.

- Celery seeds will remain viable for 3 years if stored in a cool, dark place, ideally between 4 and 10⁰C. After that, the germination rate may start to go down. 


You know that a lush, fruitful garden needs good soil, frequent watering, and sunlight to grow, but it’s the seeds that really make the harvest.

Picked and bagged for 2024 the vast majority of our seeds have germination rates of over 85%. The seeds are all-natural, non-GMO, non-hybrid, untreated, and open-pollinated for seed saving.

We have put a lot of thoughts into the design and packaging of our seed packets. Our seeds are all carefully packed in food grade kraft paper/aluminium zipper lock bags, and then are shipped in eco-friendly padded mailers.

We heat-seal each of our seed packet for even more protection from moisture, odour and light, allowing you to store your seeds for up to 3x longer than paper or plastic. Plant them all, germinate some indoors, save some for next season - it’s up to you!

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Cynthia H.
Canada Canada

Great product, can't wait to try it! :)

Great product, can't wait to try it! :)

Barbara O.

Fast shipping, order was perfect. Very hap...

Fast shipping, order was perfect. Very happy with the seeds so far! Will definitely order yet again from this seller!

Barbara O.

Fast shipping, order was perfect. Very hap...

Fast shipping, order was perfect. Very happy with the seeds so far! Will definitely order yet again from this seller!


excellent communication and product. excee...

excellent communication and product. exceeded expectations.


J ai reçu mes semences rapidement.

J ai reçu mes semences rapidement.