When to Plant Kai Lan in Banff-Jasper, AB
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.
Banff-Jasper, Alberta is in USDA Zone 4a. The average last spring frost is May 17 and the first fall frost is October 4, giving you a growing season of approximately 140 days.
At an elevation of 4,537 feet, Banff-Jasper receives approximately 20.6 inches of rainfall annually with predominantly dark brown chernozem soil. Summer highs average 70°F, so choose short-season varieties of Kai Lan to ensure they mature before fall.
Banff-Jasper Soil Profile
Soil Type
Dark Brown Chernozem
Soil pH
6.0-7.0
Drainage
Well Drained
Kai Lan Planting Timeline — Banff-Jasper, AB
Kai Lan Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | April 5 | Apr 5 – Apr 19 |
| Transplant Outdoors | May 17 | May 17 – May 31 |
| Direct Sow | May 10 | May 10 – May 31 |
| Harvest | July 5 | Jul 5 – Aug 2 |
| Fall Sowing | July 12 | Jul 12 – Jul 26 |
Plant 0.5" deep · 6" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | Start Indoors |
| May | Transplant Outdoors Direct Sow |
| June | — |
| July | Fall Sowing Harvest |
| August | Harvest |
| 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 4a
📆 Growing Season
140 days in Banff-Jasper
Growing Tips for Banff-Jasper
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
Check more plant combinations with our Companion Planting Checker →
Kai Lan in Other Locations
Frequently Asked Questions
When should I plant Kai Lan in Banff-Jasper, AB?
Banff-Jasper is in Zone 4a with an average last frost of May 17. Plan your Kai Lan planting based on this frost date — see the calendar above for exact timing.
What planting zone is Banff-Jasper, AB?
Banff-Jasper, Alberta is in USDA Hardiness Zone 4a. The average last spring frost is May 17 and first fall frost is October 4.
Your Banff-Jasper Garden Planner — Free
A 22-page printable planner built for Banff-Jasper (Zone 4a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.