Can You Grow Broccoli in Zone 5b?
Quick Answer:
✅ Yes — Broccoli grows well here as a spring or fall crop — time planting to avoid peak summer heat.
✅ Yes
Broccoli grows well in Zone 5b
Broccoli grows well here as a spring or fall crop — time planting to avoid peak summer heat.
📅 When to Plant in Zone 5b
Start Indoors
Feb 24
Transplant Out
Apr 7
Last Sow Date
Aug 3
🌾 Harvest
Jun 6 – Jun 26
Based on Zone 5b's average last frost of early April and first frost of late October.
🌱 Growing Broccoli in Zone 5b
Start indoors 6-8 weeks before last frost for spring planting or direct sow in midsummer for fall. Harvest the main head before it flowers — side shoots continue producing after.
🪴 Container: 5+ gal pot❄️ Frost Tolerant
🗺️ USDA Plant Hardiness Zones
Zone 5 is shown in
this colour
on the map below
2023 USDA Plant Hardiness Zone Map — public domain. USDA Agricultural Research Service
USDA zones run 1a–13b (26 half-zones). Each full zone above covers both the a and b half-zones. Browse all US zones →
Technical climate details for Zone 5b
- USDA Zone
- 5b
- Last Frost
- early April
- First Frost
- late October
- Frost-Free Days
- 197
- Broccoli Zone Range
- 2a – 9b
- Days to Harvest
- 60–80 days
Frequently Asked Questions
Broccoli grows well here as a spring or fall crop — time planting to avoid peak summer heat.
Zone 5b is in USDA Hardiness Zone 5b with approximately 197 frost-free days per year.
Broccoli grows in USDA Zones 2a–9b.
Broccoli needs moderate care and attention to thrive.