Growing Bok Choy in Zone 4
When to plant and harvest bok choy in Zone 4— based on your zone's frost dates.
Zone 4 sits comfortably within bok choy's best range (Zones 3–10), so it grows well here on a standard schedule.
Bok Choy planting calendar for Zone 4
These months are derived from Zone 4's frost dates — last frost around Early – mid May, first frost around Mid September – mid October.
Start indoors
April
Sow outdoors
April
Transplant
April
Harvest
May
Free planting calendar
Put bok choy on your own planting calendar
A month-by-month Zone 4 chart with bok choy already on it — add the rest of your garden, then print it or save it as a PDF.
Free · no signup needed
Bok Choy care at a glance
- Sunlight
- Full sun to part shade (4–6+ hours)
- Water
- 1–1.5 inches per week, even and consistent
- Spacing
- 4–6 in apart (baby) or 10–12 in (full-size)
- Days to maturity
- 25–45 days from sowing
- Best zones
- 3–10 (cool-season annual)
Growing bok choy in Zone 4: FAQs
Can you grow bok choy in Zone 4?＋
Zone 4 sits comfortably within bok choy's best range (Zones 3–10), so it grows well here on a standard schedule.
When should I plant bok choy in Zone 4?＋
In Zone 4, start seeds indoors around April. Zone 4's last spring frost is typically Early – mid May and its first fall frost around Mid September – mid October, which sets the planting window.
When to harvest bok choy in Zone 4?＋
Expect to harvest bok choy in Zone 4 around May, depending on the season and variety.
Full Bok Choy guide →
Complete care, problems, companions, and harvest tips.
Zone 4 overview →
Frost dates, climate, and everything to grow here.
October in Zone 4 →
What to sow, transplant, and harvest this month.