Growing Chinese Broccoli in Zone 4a
Zone 4a has cold winters and a moderate growing season. Timing is key for Chinese Broccoli in this zone. น้ำค้างแข็งครั้งสุดท้าย: May 5. น้ำค้างแข็งครั้งแรก: Oct 1.
Planting Calendar
Season: May 5 – Oct 1 (149 วัน)
When to Plant Chinese Broccoli in Zone 4a
Start Seeds Indoors: Mar 24
Start Chinese Broccoli seeds indoors around Mar 24 (6 สัปดาห์ก่อนน้ำค้างแข็งครั้งสุดท้าย). Optimal germination temperature: 75F. Germinates in 5-10 days.
Transplant Outdoors: May 19
Transplant Chinese Broccoli seedlings outdoors after May 19. Wait until soil temperature reaches 50F. Space plants at 4/ตร.ม. (15cm ห่างกัน). Harden off plants for a week before moving outside.
Harvest: Jul 18
First harvest approximately Jul 18 (~60 วัน from transplant). Continue harvesting until first frost (Oct 1).
Fall Planting: Jul 9
For a fall harvest, plant Chinese Broccoli around Jul 9 (12 weeks before first frost).
Chinese Broccoli in Other Zones
1a 1b 2a 2b 3a 3b 4a 4b 5a 5b 6a 6b 7a 7b 8a 8b 9a 9b 10a 10b 11a 11b 12a 12b 13a 13bPlan Your Garden Chinese Broccoli
Track Chinese Broccoli from seed to harvest with personalized frost dates, watering recommendations, and companion planting visualization.
Start Free Chinese Broccoli Growing Guide