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Celery Growing Guide
Apiaceae family
Companion Planting
Growth Stages
- Seedling
- Early Vegetative
- Late Vegetative / Harvest Ready
Planting Dates by Zone
| Zone | Start Indoors | Transplant | Direct Sow | Harvest |
|---|---|---|---|---|
| Zone 1a | Mar 16 | May 25 | — | Aug 18 |
| Zone 1b | Mar 16 | May 25 | — | Aug 18 |
| Zone 2a | Mar 6 | May 15 | — | Aug 8 |
| Zone 2b | Mar 16 | May 25 | — | Aug 18 |
| Zone 3a | Mar 13 | May 22 | — | Aug 15 |
| Zone 3b | Mar 6 | May 15 | — | Aug 8 |
| Zone 4a | Feb 24 | May 5 | — | Jul 29 |
| Zone 4b | Feb 20 | May 1 | — | Jul 25 |
| Zone 5a | Feb 17 | Apr 28 | — | Jul 22 |
| Zone 5b | Feb 17 | Apr 28 | — | Jul 22 |
| Zone 6a | Feb 17 | Apr 28 | — | Jul 22 |
| Zone 6b | Feb 4 | Apr 15 | — | Jul 9 |
| Zone 7a | Feb 4 | Apr 15 | — | Jul 9 |
| Zone 7b | Jan 30 | Apr 10 | — | Jul 4 |
| Zone 8a | Jan 25 | Apr 5 | — | Jun 29 |
| Zone 8b | Jan 11 | Mar 22 | — | Jun 15 |
| Zone 9a | Jan 9 | Mar 20 | — | Jun 13 |
| Zone 9b | Dec 30 | Mar 10 | — | Jun 3 |
| Zone 10a | Dec 12 | Feb 20 | — | May 16 |
| Zone 10b | Nov 19 | Jan 28 | — | Apr 23 |
| Zone 11a | Nov 19 | Jan 28 | — | Apr 23 |
| Zone 11b | Nov 6 | Jan 15 | — | Apr 10 |
| Zone 12a | Oct 23 | Jan 1 | — | Mar 27 |
| Zone 12b | Oct 23 | Jan 1 | — | Mar 27 |
| Zone 13a | Oct 23 | Jan 1 | — | Mar 27 |
| Zone 13b | Oct 23 | Jan 1 | — | Mar 27 |
Frequently Asked Questions
How long does it take to grow Celery?
Celery takes approximately 100 days from planting to harvest.
How much sun does Celery need?
Celery requires full sun (6+ hours direct sunlight per day).
How far apart should I plant Celery?
Plant Celery at 4/sqft (6" apart) using square foot gardening spacing.
Can Celery survive frost?
Celery is tolerant of light frost.
What are good companion plants for Celery?
Good companion plants for Celery include Tomatoes, Cabbage, Beans, Leeks, Cauliflower. Avoid planting near Corn, Aster flowers.
How long does Celery take to germinate?
Celery seeds germinate in 14-21 days at an optimal temperature of 70°F.
When should I start Celery seeds indoors?
Start Celery seeds indoors 10 weeks before your last frost date.
Growing Tips
- Start seeds indoors 10-12 weeks before last frost; germination is slow
- Provide consistent moisture; celery is 95% water
- Hill soil around stalks or wrap with paper to blanch for milder flavor
Common Pests & Diseases
- Celery leaf miner
- Aphids
- Septoria leaf spot
- Fusarium wilt
Harvest Notes
Cut stalks from the outside in, or harvest the whole plant at the base. Best flavor when stalks are crisp and pale green.
Plan Your Celery Garden
Track Celery from seed to harvest with personalized frost dates, watering recommendations, and companion planting visualization.
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