Zone 4 · Fruiting Veg Growing Guide

When to Plant Celery
in Zone 4

The most demanding crop in this guide — needs consistent moisture, steady cool temperatures, and a very long season. But homegrown celery has a depth of flavour you'll never find in a supermarket. Start early, be patient.

Plant outdoors
May 10 – May 25
Start indoors
Feb 25 – Mar 10
Last Frost
~May 1
Days to harvest
100–130 days
Difficulty
Hard
Start indoors — Zone 4
Harvest window: Aug – Oct

Planting Calendar

In Zone 4, Celery should be planted outdoors May 10 – May 25, after the average last frost date of approximately May 1. Start seeds indoors around Feb 25 – Mar 10 for a head start.

10 weeks indoors minimum. Keep soil consistently moist — celery wilts fast and recovers poorly. Golden Pascal or Tango are reliable varieties.

Care Guide

Sunlight
Full sun to partial shade · 4–8 hrs/day
Watering
High
Spacing
8–10 inches
Soil
Rich, moisture-retentive, well-draining
Days to maturity
100–130 days
Soil pH
6.0–7.0
plant tip · Zone 4

10 weeks indoors minimum. Keep soil consistently moist — celery wilts fast and recovers poorly. Golden Pascal or Tango are reliable varieties.

Feeding Schedule

How often
every 2 weeks
Feed type
high nitrogen
Key timing
throughout growing season

One of the heaviest feeders in the vegetable garden. Liquid feed every 2 weeks. Inconsistent feeding produces stringy, bitter stalks.

Companion Planting for Celery

What you plant next to celery makes a real difference — some plants actively help, others compete or attract pests.

Grows well with
  • Tomatoes
  • Brassicas
  • Beans
  • Leeks
Keep away from
  • Corn
  • Fennel
  • Parsnips

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Common questions

In Zone 4, start celery seeds indoors around Feb 25 – Mar 10, then transplant outdoors May 10 – May 25 after your last frost around May 1. 10 weeks indoors minimum. Keep soil consistently moist — celery wilts fast and recovers poorly. Golden Pascal or Tango are reliable varieties.
Zone 4 has an average last spring frost of approximately May 1 and a first fall frost around Oct 1. These dates vary by specific location — use your ZIP code in the plant app for precision based on the nearest NOAA weather station.
Good companion crops for celery include Tomatoes, Brassicas, Beans, Leeks. Avoid planting near Corn, Fennel, Parsnips, which can compete for nutrients or attract pests.
Celery typically takes 100–130 days from transplant or direct sow to harvest in Zone 4. Expected harvest window: Aug – Oct.

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Celery in other zones
Crop Guides