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When to Plant Broccoli Rabe in Elk County, KS

Broccoli rabe (rapini) is a brassica grown for its slightly bitter, nutty-flavored florets, leaves, and stems. It is a staple in Italian cooking.

Elk County, Kansas is in USDA Zone 6b. The average last spring frost is April 7 and the first fall frost is October 25, giving you a growing season of approximately 201 days.

At an elevation of 700 feet, Elk County receives approximately 30.4 inches of rainfall annually with predominantly loam soil. Summer highs average 90ยฐF, providing good warmth for Broccoli Rabe during the growing season.

Elk County, KS (Zone 6b) Long season
201 days
Last Spring Frost April 7
201 growing days
First Fall Frost October 25

Elk County Soil Profile

Soil Type

Loam

Soil pH

6.8-7.6

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (126 days to spare)
Start indoors: Feb 23 Transplant: Mar 30 🍅 Harvest: May 11 – Jun 15
Recommended (50%) ✓ Fits season (124 days to spare)
Start indoors: Mar 3 Transplant: Apr 7 🍅 Harvest: May 19 – Jun 23
Safe Start (90%) ✓ Fits season (126 days to spare)
Start indoors: Mar 17 Transplant: Apr 21 🍅 Harvest: Jun 2 – Jul 7

Percentages indicate frost risk at transplant. The 70% safe window means there is a 30% chance of frost after transplant — suitable for cold-hardy crops or gardeners with frost protection. The 90% safe window is best for tender plants.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
0.6″/week
You supply
0.4″/week
Watering frequency 1-2 times/week
Season total 783 gal / 100 sq ft
Drought risk

Water stress score is 6/10 โ€” consider drought-tolerant varieties and mulching

Broccoli Rabe needs ~875 GDD — county provides 3,517 GDD Excellent fit

Broccoli Rabe Planting Timeline โ€” Elk County, KS

Broccoli Rabe Planting Calendar

Activity When Date Range
Start Indoors March 3 Mar 3 โ€“ Mar 17
Transplant Outdoors April 7 Apr 7 โ€“ Apr 21
Direct Sow March 24 Mar 24 โ€“ Apr 14
Fall Sowing August 16 Aug 16 โ€“ Aug 30
Harvest May 19 May 19 โ€“ Jun 23

Plant 1" deep ยท 15" apart ยท Rows 24" apart

Month-by-Month Timeline

MonthActivities
January โ€”
February โ€”
March Start Indoors Direct Sow
April Transplant Outdoors Direct Sow
May Harvest
June Harvest
July โ€”
August Fall Sowing
September โ€”
October โ€”
November โ€”
December โ€”

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Moderate โ€” regular watering

Days to Maturity

40โ€“60 days

Soil pH

6 โ€“ 7.5

USDA Zone

Zone 6b

Growing Season

201 days

Growing Tips for Elk County

Direct sow in spring or fall. Harvest when small yellow flower buds first appear but before they open. Cut the main shoot first to encourage side shoots.

Companion Planting

Good Companions

Avoid Planting Near

  • Strawberries

Level Up Your Garden

Frequently Asked Questions

When should I plant Broccoli Rabe in Elk County, KS?

Elk County is in Zone 6b with an average last frost of April 7. Plan your Broccoli Rabe planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Elk County, KS?

Elk County, Kansas is in USDA Hardiness Zone 6b. The average last spring frost is April 7 and first fall frost is October 25.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Elk County gardeners in Zone 6b organize planting dates, track what's growing, and never miss a planting window.

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Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Elk County, KS. Local conditions may vary. Last updated: April 2026.