When to plant Broccoli Rabe in Johnson County County,
In Johnson County County, plant Broccoli Rabe in spring between March 31 and April 21, once soil temps hold above 50°F. Johnson County County's last frost averages April 14, so most warm-season crops establish quickly once soil holds above 60°F. For a fall crop, sow between August 17 and August 31 — roughly 60 days before the first frost on October 26.
When to Plant Broccoli Rabe in Johnson County, KY
Your June gardening checklist
Welcome to June in Zone 7a. These are the moves that will have the biggest impact on your growing season.
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Start harvesting broccoli rabe
Taste as you pick. The first ripe produce is the best feedback loop you'll get all season.
Broccoli rabe (rapini) is a brassica grown for its slightly bitter, nutty-flavored florets, leaves, and stems. It is a staple in Italian cooking.
Johnson County, Kentucky is in USDA Zone 7a. The average last spring frost is April 14 and the first fall frost is October 26, giving you a growing season of approximately 195 days.
At an elevation of 3,308 feet, Johnson County receives approximately 47 inches of rainfall annually with predominantly silt loam soil. Summer highs average 86°F, providing good warmth for Broccoli Rabe during the growing season.
Johnson County Soil Profile
Soil Type
Silt Loam
Soil pH
5.3-7
Drainage
Well Drained
Broccoli Rabe Planting Risk Windows
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.
Soil Compatibility in Johnson County
How your county's soil matches Broccoli Rabe's growing requirements.
Soil pH
Your soil pH (5.3–7.0) overlaps with Broccoli Rabe's range (6.0–7.5), though not a perfect match.
Soil Texture
The silt loam soil in Johnson County is excellent for Broccoli Rabe — good drainage, moisture retention, and nutrient holding capacity.
Drainage
Drainage is adequate for Broccoli Rabe.
Organic Matter
Organic matter is moderate (3.0%). Annual compost additions will help Broccoli Rabe.
How to Plant Broccoli Rabe
Fall planting: Sow 10 weeks before your first frost date for a fall harvest.
Succession Planting Broccoli Rabe
Sow every 4.6 weeks. Last sowing by Aug 27 to harvest before frost.
For a dedicated fall crop, sow by Aug 17.
Broccoli Rabe Water Budget
Water stress score is 6/10 — consider drought-tolerant varieties and mulching
Monthly Watering Guide for Broccoli Rabe
Broccoli Rabe needs approximately 0.8 inches of water per week (3.5" per month). Here's how your county's rainfall compares month by month.
| Month | Broccoli Rabe Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 3.4" | 0" | ❄️ Dormant |
| Feb | — | 4.2" | 0" | ❄️ Dormant |
| Mar | — | 5.1" | 0" | ❄️ Dormant |
| Apr | 3.5" | 4.1" | 0" | ✅ Rainfall sufficient |
| May | 3.5" | 3.5" | 0" | ✅ Rainfall sufficient |
| Jun | 3.5" | 4.6" | 0" | ✅ Rainfall sufficient |
| Jul | 3.5" | 4.6" | 0" | ✅ Rainfall sufficient |
| Aug | 3.5" | 4.4" | 0" | ✅ Rainfall sufficient |
| Sep | 3.5" | 3.5" | 0" | ✅ Rainfall sufficient |
| Oct | 3.5" | 2.6" | 0.9" | 💧 Light watering |
| Nov | — | 3.6" | 0" | ❄️ Dormant |
| Dec | — | 3.5" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Apr–Oct in Johnson County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Broccoli Rabe Heat Requirements (GDD)
What are Growing Degree Days (GDD)?
Growing Degree Days measure the total warmth your plants receive during the growing season. Think of it as a "heat bank" — every day above 50°F deposits warmth that helps your plants grow.
Each plant needs a certain amount of accumulated heat to mature. If your county provides more GDD than the plant needs, it's a great fit. If it's close, you may want to choose faster-maturing varieties or start seeds indoors to get a head start.
Broccoli Rabe Planting Timeline — Johnson County, KY
Broccoli Rabe Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | March 10 | Mar 10 – Mar 24 |
| Transplant Outdoors | April 14 | Apr 14 – Apr 28 |
| Direct Sow | March 31 | Mar 31 – Apr 21 |
| Harvest | May 26 | May 26 – Jun 30 |
| Fall Sowing | August 17 | Aug 17 – Aug 31 |
Plant 1" deep · 15" apart · Rows 24" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | Start Indoors Direct Sow |
| April | Transplant Outdoors Direct Sow |
| May | Harvest |
| June | Harvest |
| July | — |
| August | Fall Sowing |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
0.8"/week · Natural rainfall sufficient
📅 Days to Maturity
40–60 days
🧪 Soil pH
Needs 6–7.5 · Your soil: acceptable
🗺️ USDA Zone
Zone 7a
📆 Growing Season
195 days in Johnson County
Growing Tips for Broccoli Rabe in Johnson County
Direct sow Broccoli Rabe outdoors after April 14 in Johnson County when soil has warmed and frost danger has passed.
Your generous 195.0-day season in Johnson County allows multiple plantings of Broccoli Rabe. Sow every 20.0 days for continuous harvest.
Common pests for Broccoli Rabe in this region include cabbage worm and flea beetles. Use row covers early in the season and inspect plants weekly.
General growing tips
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
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Broccoli Rabe in Other Locations
Frequently Asked Questions
When should I plant Broccoli Rabe in Johnson County, KY?
Johnson County is in Zone 7a with an average last frost of April 14. Plan your Broccoli Rabe planting based on this frost date — see the calendar above for exact timing.
What planting zone is Johnson County, KY?
Johnson County, Kentucky is in USDA Hardiness Zone 7a. The average last spring frost is April 14 and first fall frost is October 26.
When should I plant Broccoli Rabe in Johnson County, ?
In Johnson County, , plant Broccoli Rabe after the last frost (around April 14) and before the first frost (around October 26). Best results when soil holds above 50°F.
What growing zone is Johnson County, for Broccoli Rabe?
Johnson County sits in USDA Zone 7a. Broccoli Rabe grows reliably in zones 2a through 10b, so it's a good fit here.
Can Broccoli Rabe grow in Johnson County's climate?
Yes — Broccoli Rabe grows well in Johnson County's temperate climate. Johnson County averages a 195-day frost-free season, with last frost around April 14 and first frost around October 26.
Your Johnson County Garden Planner — Free
A 22-page printable planner built for Johnson County (Zone 7a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.