Cauliflower Growing Guide
Cauliflower is a great next step in your growing journey. Follow this guide from planting to harvest and you'll do great.
At a Glance
Difficulty
Challenging
Category
Vegetable
Sun Exposure
Full Sun, Partial Sun
Frost Tolerance
Frost Hardy
Growing Zones
Zones 2, 3, 4, 5, 6, 7, 8, 9
Plant Family
Brassicaceae
Growing Season
Cool Season
Plant Lifecycle
Biennial
Also grows well as
When To Start
First Chance to Plant
45 Days Before Last Frost
Last Chance to Plant
60 Days Before First Frost
When should you plant Cauliflower?
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Your Cauliflower Planting Window
Start planting
May 15, 2026
Last chance
Sep 10, 2026
The Journey Ahead
Cauliflower's Lifecycle
Seedling
Mature Plant
Seed Production
Step 2
Planting & Sprouting
Expect sprouts in 5–10 days
Growing Tips
- 1Plant cauliflower in a spot that gets full sun, as it needs at least 6 hours of sunlight daily.
- 2Keep the soil consistently moist but not waterlogged, watering deeply once a week.
- 3Use well-draining, rich soil with a pH between 6.0 and 7.0, and space plants about 18-24 inches apart to allow for growth.
- 4To manage pests, use row covers to protect young plants and regularly check for common pests like aphids and cabbage worms.
Seedling Phase
Step 3
Growth & Maturity
~85
Days to Maturity
60 cm
Mature Height
60 cm
Mature Width
Pests to Watch For
Diseases to Watch For
Mature Plant
Step 4
Harvesting
Harvest Window
30 days
When to Pick
Harvest head while tight and white
How to Harvest
- 1Harvest cauliflower when the heads are firm, compact, and about 6-8 inches in diameter.
- 2Use a sharp knife to cut the head from the main stem, leaving a few leaves around it to protect the head.
- 3Avoid damaging the plant by cutting carefully and not pulling the head, which can harm the plant and surrounding leaves.
Step 5
Saving Seeds
How to Save Seeds
Saving seeds from your cauliflower plant is a rewarding and simple process that any new grower can master! Allow your healthiest cauliflower plants to fully mature and “bolt,” producing tall flower stalks with yellow blossoms. Once the flowers fade and seed pods form, let them dry on the plant until they turn brown and brittle. Gently collect the pods, break them open, and gather the tiny seeds inside. Store your seeds in a cool, dry place in a labeled envelope or jar—adding a little silica gel packet can help keep them dry. With just a bit of patience, you’ll have your own homegrown seeds ready for next season’s garden!
Seed Production
Feeling inspired?
Grow Cauliflower from seed.
A demanding crop — but a single perfect head is its own reward. Buy a pack and get started.
$2.25
CAD
In Stock
