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Broccoli Planting Guide

Broccoli is a nutrient-dense cool-season crop that produces large central heads followed by smaller side shoots. It is one of the most popular garden vegetables.

Brassica oleracea var. italica ยท Vegetable ยท Brassicaceae family ยท 60โ€“90 days to maturity

Where Can You Grow Broccoli?

Broccoli Growing Regions

Click any state to see the Broccoli planting schedule for that location.

Planting Dates by Zone

Zone Start Indoors Direct Sow Transplant Harvest
Zone 2a Apr 18 May 23 May 30 Aug 1 โ€“ Sep 12
Zone 2b Apr 10 May 15 May 22 Jul 24 โ€“ Sep 4
Zone 3a Apr 3 May 8 May 15 Jul 17 โ€“ Aug 28
Zone 3b Mar 29 May 3 May 10 Jul 12 โ€“ Aug 23
Zone 4a Mar 25 Apr 29 May 6 Jul 8 โ€“ Aug 19
Zone 4b Mar 20 Apr 24 May 1 Jul 3 โ€“ Aug 14
Zone 5a Mar 21 Apr 11 Apr 25 Jun 27 โ€“ Aug 8
Zone 5b Mar 14 Apr 4 Apr 18 Jun 20 โ€“ Aug 1
Zone 6a Mar 6 Mar 27 Apr 10 Jun 12 โ€“ Jul 24
Zone 6b Feb 27 Mar 20 Apr 3 Jun 5 โ€“ Jul 17
Zone 7a Feb 18 Mar 11 Mar 25 May 27 โ€“ Jul 8
Zone 7b Feb 11 Mar 4 Mar 18 May 20 โ€“ Jul 1
Zone 8a Feb 1 Feb 22 Mar 8 May 10 โ€“ Jun 21
Zone 8b Jan 21 Feb 11 Feb 25 Apr 29 โ€“ Jun 10
Zone 9a Jan 13 Jan 20 Feb 10 Apr 14 โ€“ May 26
Zone 9b Dec 28 Jan 4 Jan 25 Mar 29 โ€“ May 10
Zone 10a Dec 4 Dec 11 Jan 1 Mar 5 โ€“ Apr 16
Zone 10b Dec 4 Dec 11 Jan 1 Mar 5 โ€“ Apr 16
Zone 11a Dec 4 Dec 11 Jan 1 Mar 5 โ€“ Apr 16
Zone 11b Dec 4 Dec 11 Jan 1 Mar 5 โ€“ Apr 16

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Moderate โ€” regular watering

Soil pH

6 โ€“ 7

Hardiness Zones

Zone 2a โ€“ 11b

Growing Tips

Start seeds indoors 6-8 weeks before last frost. Provide consistent moisture to prevent hollow stems. Harvest heads before yellow flowers appear.

Saving Broccoli Seeds

๐ŸŒพ Save Your Own Broccoli Seeds
Life Cycle Biennial
Pollination Cross-Pollinated (insects)
How to Collect Allow plants to flower 2nd year; collect dry pods.
Storage Store airtight; viable 5 years at 35ยฐF, under 50% humidity.

Isolate 1/2 mile from other brassicas. Biennial โ€” must overwinter roots.

Recommended for Your Garden

๐ŸŒฑ
Seed Starting Trays $8-20

Start seeds indoors with reusable cell trays and humidity domes.

๐Ÿงช
Soil Test Kit $12-25

Test your soil pH, nitrogen, phosphorus, and potassium levels before planting.

๐Ÿท๏ธ
Garden Plant Markers $6-12

Keep your garden organized with durable, weather-resistant plant labels.

Level Up Your Garden

Broccoli by State

Frequently Asked Questions

How long does it take to grow Broccoli?

Broccoli (Brassica oleracea var. italica) takes 60 to 90 days from planting to harvest. Exact timing depends on your variety, growing conditions, and USDA zone.

What zones can Broccoli grow in?

Broccoli can be grown in USDA zones 2a through 11b. Use the planting calendar above to find the exact dates for your zone.

How much sun does Broccoli need?

Growing Broccoli requires Full Sun (6-8+ hours), Moderate โ€” regular watering, and soil pH of 6 to 7.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals, University Cooperative Extension planting guides. Last updated: April 2026.