How to Plant Cauliflower Vegetable Seeds
Fast Facts
- Planting season
- Cool Season
- Life cycle
- Annual
- Sowing method
- Start Indoors
- Light
- Full Sun
- Water needs
- Average
- Planting depth
- 1/4 inch
- Spacing
- 18 to 24 inches
- Mature height
- 24 inches
- Hardiness zones
- 2 to 10
- Days to maturity
- 80 Days
Ranges cover every variety in this group. Check the product page for the exact figures.
About Cauliflower Vegetable Seeds
Cauliflower Vegetable Seeds grow in full sun positions. Expect 24 inches at maturity. Harvest begins around 80 days from sowing. The figures below are the ones on the packets in this group; each product page carries the exact numbers for that variety.
When to plant
Plant in cool season. Start seed indoors and move the seedlings out once the danger of frost has passed. Hardy in zones 2 to 10 — your local frost dates decide the exact week.
Where to plant
Choose a site in full sun. Water needs are average once the plants are established. Free-draining soil matters more than rich soil; seed sown into ground that stays wet rots before it germinates. Allow 18 to 24 inches between plants so air can move between them. Plan for 24 inches of growth when you place them in a bed or border.
How to plant
Sow 1/4 inch deep, spaced 18 to 24 inches apart. Water gently to settle the soil, then keep the surface evenly moist until seedlings or shoots appear. Indoor starts do best in warmth and bright light; harden the seedlings off over a week before planting out.
How to care
Keep watering average, at the base of the plant rather than over the leaves. Grown as an annual, so plan to sow again next season. Expect to start harvesting around 80 days after sowing.

