When to Plant Kai Lan in Richland County, OH
Kai lan (Chinese broccoli) is a brassica grown for its thick, glossy stems and small flower buds. It has a slightly bitter, broccoli-like flavor essential in Cantonese cooking.
Richland County, Ohio is in USDA Zone 6a. The average last spring frost is April 27 and the first fall frost is October 18, giving you a growing season of approximately 174 days.
At an elevation of 1,020 feet, Richland County receives approximately 34.2 inches of rainfall annually with predominantly silt loam soil. Summer highs average 87°F, providing good warmth for Kai Lan during the growing season.
Richland County Soil Profile
Soil Type
Silt Loam
Soil pH
6.0-7.0
Drainage
Well Drained
Kai Lan Planting Timeline — Richland County, OH
Kai Lan Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | March 23 | Mar 23 – Apr 6 |
| Transplant Outdoors | April 27 | Apr 27 – May 11 |
| Direct Sow | April 13 | Apr 13 – May 4 |
| Harvest | June 15 | Jun 15 – Jul 13 |
| Fall Sowing | August 9 | Aug 9 – Aug 23 |
Plant 0.5" deep · 6" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | Start Indoors |
| April | Start Indoors Transplant Outdoors Direct Sow |
| May | Transplant Outdoors Direct Sow |
| June | Harvest |
| July | Harvest |
| August | Fall Sowing |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
Moderate — regular watering
📅 Days to Maturity
45–60 days
🧪 Soil pH
Needs 6–7.5 · Your soil: N/A
🗺️ USDA Zone
Zone 6a
📆 Growing Season
174 days in Richland County
Growing Tips for Richland County
Direct sow in spring or fall. Harvest when flower buds first appear but before they open. Cut stems at the base to encourage side shoots. Prefers cool weather.
Companion Planting
Good Companions
Avoid Planting Near
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Kai Lan in Other Locations
Frequently Asked Questions
When should I plant Kai Lan in Richland County, OH?
Richland County is in Zone 6a with an average last frost of April 27. Plan your Kai Lan planting based on this frost date — see the calendar above for exact timing.
What planting zone is Richland County, OH?
Richland County, Ohio is in USDA Hardiness Zone 6a. The average last spring frost is April 27 and first fall frost is October 18.
Your Richland County Garden Planner — Free
A 22-page printable planner built for Richland County (Zone 6a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.