Zone-Specific Guide
Grow Choy Sum in Zone 2a
Your complete guide to growing choy sum in USDA Hardiness Zone 2a — planting windows, care tips, and harvest timing.
Summer
🌡️ Zone 2a
Days to Harvest
35–50
Spacing
6–10"
Method
Direct sow
Season
Summer
When to Plant Choy Sum in Zone 2a
Start Indoors
Apr 1 – May 1
Transplant Outdoors
May 15 – Jun 15
How to Grow Choy Sum in Zone 2a
📋 Key Timing Note
Short season. Start indoors and transplant after last frost. Choose fast-maturing varieties. Cool summer temps are actually ideal for these crops.
Space plants 6–10" apart. Expect to harvest in approximately 35–50 days.
Common Pests in Zone 2a
Watch for these pests when growing choy sum in your area.
Frequently Asked Questions
When should I plant Choy Sum in Zone 2a?
Start seeds indoors Apr 1 – May 1. Transplant outdoors May 15 – Jun 15.
How far apart should I plant Choy Sum in Zone 2a?
Space choy sum plants 6–10" apart in Zone 2a. This gives them adequate room for airflow and root development.
What pests affect Choy Sum in Zone 2a?
Common pests for choy sum in Zone 2a include flea beetles, aphids. Use companion planting and row covers as first-line defense.
How long until Choy Sum is ready to harvest in Zone 2a?
In Zone 2a, expect choy sum to be ready in approximately 35–50 days from planting. Short season. Start indoors and transplant after last frost. Choose fast-maturing varieties. Cool summer temps are actually ideal for these crops.