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When to Plant Broccoli Rabe in Potter County, PA

Potter County, Pennsylvania Zone 5b May

Your May game plan for Potter County, Pennsylvania

May rewards gardeners who work with the weather, not against it. Here's how to stay in step this month in Potter County, Pennsylvania.

Avg. last frost May 17
Avg. first frost October 5
Soil temp (4") 60°F
Watering Low
Pest pressure Low
Daylight 14.4 hrs
  1. Plant out broccoli rabe

    Water the tray well an hour before you transplant. Roots slide out cleanly and settle in faster.

  2. Outdoor sowing time: broccoli rabe

    Rake a smooth bed, make a shallow furrow, drop seeds at the spacing on the packet, water gently, walk away.

June prep starts now
  • Starting indoors: broccoli rabe
  • First harvests: broccoli rabe

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

Potter County, Pennsylvania is in USDA Zone 5b. The average last spring frost is May 17 and the first fall frost is October 5, giving you a growing season of approximately 141 days.

At an elevation of 156 feet, Potter County receives approximately 47.3 inches of rainfall annually with predominantly silt loam soil. Summer highs average 84°F, so choose short-season varieties of Broccoli Rabe to ensure they mature before fall.

Potter County, PA (Zone 5b) Short season
141 days
Last Spring Frost May 17
141 growing days
First Fall Frost October 5

Potter County Soil Profile

Soil Type

Silt Loam

Soil pH

5-6.4

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (67 days to spare)
Start indoors: Apr 4 Transplant: May 9 🍅 Harvest: Jun 20 – Jul 25
Recommended (50%) ✓ Fits season (64 days to spare)
Start indoors: Apr 12 Transplant: May 17 🍅 Harvest: Jun 28 – Aug 2
Safe Start (90%) ✓ Fits season (71 days to spare)
Start indoors: Apr 26 Transplant: May 31 🍅 Harvest: Jul 12 – Aug 16

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 Potter County

How your county's soil matches Broccoli Rabe's growing requirements.

Soil pH

Your soil pH (5.0–6.4) is more acidic than Broccoli Rabe prefers (6.0–7.5). Add garden lime to raise pH.

Soil Texture

The silt loam soil in Potter County is excellent for Broccoli Rabe — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (3.9%). Annual compost additions will help Broccoli Rabe.

How to Plant Broccoli Rabe

1"
Planting Depth
15"
Between Plants
24"
Between Rows

Fall planting: Sow 10 weeks before your first frost date for a fall harvest.

Succession Planting Broccoli Rabe

4
successive plantings in your 141-day season

Sow every 4.6 weeks. Last sowing by Aug 06 to harvest before frost.

For a dedicated fall crop, sow by Jul 27.

Plant Water Budget

Plant needs
0.8″/week
Rainfall provides
1.4″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft

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 2.8" 0" ❄️ Dormant
Mar 3.8" 0" ❄️ Dormant
Apr 4.1" 0" ❄️ Dormant
May 3.5" 4.8" 0" ✅ Rainfall sufficient
Jun 3.5" 3.9" 0" ✅ Rainfall sufficient
Jul 3.5" 4.8" 0" ✅ Rainfall sufficient
Aug 3.5" 4.2" 0" ✅ Rainfall sufficient
Sep 3.5" 4.1" 0" ✅ Rainfall sufficient
Oct 3.5" 4.3" 0" ✅ Rainfall sufficient
Nov 3.3" 0" ❄️ Dormant
Dec 3.8" 0" ❄️ Dormant

Water needs are for active growing months only (May–Oct in Potter 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 needs ~650 GDD — county provides 1,833 GDD Excellent fit

Broccoli Rabe Planting Timeline — Potter County, PA

Broccoli Rabe Planting Calendar

Activity When Date Range
Start Indoors April 12 Apr 12 – Apr 26
Transplant Outdoors May 17 May 17 – May 31
Direct Sow May 3 May 3 – May 24
Harvest June 28 Jun 28 – Aug 2
Fall Sowing July 27 Jul 27 – Aug 10

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

Month-by-Month Timeline

MonthActivities
January
February
March
April Start Indoors
May Transplant Outdoors Direct Sow
June Harvest
July Fall Sowing Harvest
August Fall Sowing Harvest
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: too_acidic

🗺️ USDA Zone

Zone 5b

📆 Growing Season

141 days in Potter County

Growing Tips for Broccoli Rabe in Potter County

Direct sow Broccoli Rabe outdoors after May 17 in Potter County when soil has warmed and frost danger has passed.

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

Good Companions

Avoid Planting Near

  • Strawberries

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Broccoli Rabe in Potter County, PA?

Potter County is in Zone 5b with an average last frost of May 17. Plan your Broccoli Rabe planting based on this frost date — see the calendar above for exact timing.

What planting zone is Potter County, PA?

Potter County, Pennsylvania is in USDA Hardiness Zone 5b. The average last spring frost is May 17 and first fall frost is October 5.

🌱

Your Potter County Garden Planner — Free

A 24-page printable planner built for Potter County (Zone 5b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

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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 Potter County, PA. Local conditions may vary. Last updated: May 2026.

Sources & credits

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