How to Grow Celery
Apium graveolens
A thirsty, long-season crop that rewards patience with crisp, fragrant stalks.
By the Plants by Zone Editorial Team · Reviewed June 1, 2026
About celery
Celery is a demanding cool-season crop with a long growing season and a bottomless thirst. It needs rich, constantly moist soil and a stretch of mild weather to produce tender stalks rather than stringy, bitter ones. It is a challenge, but home-grown celery is far more flavorful than store-bought.
When to plant and harvest celery
Timing is relative to your frost dates. Find your USDA zone for exact dates, or browse the month-by-month calendars.
Start seeds indoors
10–12 weeks before last frost
Transplant outdoors
After last frost, once nights stay above 50°F
Direct sow
Rarely — the season is too long in most zones
Harvest
Late summer into fall
How to grow celery step by step
- 1
Start seed early and indoors; press it onto the surface since it needs light to germinate.
- 2
Keep seedlings warm and evenly moist through their slow start.
- 3
Transplant only after frost danger and cold snaps pass — chill can trigger bolting.
- 4
Plant in very rich soil and water constantly; celery never wants to dry out.
- 5
Feed regularly throughout the long season.
- 6
For paler, milder stalks, blanch by mounding soil or wrapping the stalks weeks before harvest.
Common problems growing celery
⚠ Stringy, tough, bitter stalks
From heat, dryness, or slow growth — keep soil rich and constantly moist, and grow in cool weather.
⚠ Plants bolt to seed
Triggered by cold snaps after transplanting — wait for settled warm weather before setting out.
⚠ Cracked or hollow stalks
Often a boron or moisture issue — maintain even watering and balanced fertility.
✗ Keep away from
🧺 Harvesting celery
Harvest outer stalks individually as you need them, or cut the whole bunch at the base once it reaches full size. Cool weather sweetens the stalks, so a fall harvest after light frosts is often the most flavorful.
Celery: frequently asked questions
Why is my celery so stringy and bitter?＋
Almost always heat or inconsistent water. Celery needs cool weather and constantly moist, rich soil to grow the tender, mild stalks you want.
Do I have to blanch celery?＋
No — it’s optional. Blanching (mounding soil or wrapping the stalks) yields paler, milder celery, but unblanched stalks are perfectly good and more nutritious.
Grow celery in your zone
See exactly when to plant and what else to grow alongside celery, tailored to your USDA hardiness zone.
