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When to Plant Kale in Beaver County, PA

Beaver County, Pennsylvania Zone 6b May

Your May planting checklist for Beaver County, Pennsylvania

May is a pivotal month for Beaver County, Pennsylvania gardens. Focus on these tasks first and you'll set up the rest of the season for success.

Avg. last frost April 30
Avg. first frost October 18
Soil temp (4") 63°F
Watering Moderate
Pest pressure Low
Daylight 14.3 hrs
Get ahead of June
  • Starting indoors: kale
  • First harvests: kale

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Kale is an exceptionally hardy, nutrient-dense green available in curly, lacinato, and Russian varieties. It tolerates heavy frost and often tastes sweeter after cold exposure.

Beaver County, Pennsylvania is in USDA Zone 6b. The average last spring frost is April 30 and the first fall frost is October 18, giving you a growing season of approximately 171 days.

At an elevation of 1,073 feet, Beaver County receives approximately 38.1 inches of rainfall annually with predominantly silt loam soil. Summer highs average 90°F, providing good warmth for Kale during the growing season.

Beaver County, PA (Zone 6b) Moderate season
171 days
Last Spring Frost April 30
171 growing days
First Fall Frost October 18

Beaver County Soil Profile

Soil Type

Silt Loam

Soil pH

5.1-6.6

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (56 days to spare)
Start indoors: Mar 22 Transplant: Apr 26 🍅 Harvest: Jun 21 – Aug 16
Recommended (50%) ✓ Fits season (59 days to spare)
Start indoors: Mar 26 Transplant: Apr 30 🍅 Harvest: Jun 25 – Aug 20
Safe Start (90%) ✓ Fits season (53 days to spare)
Start indoors: Apr 17 Transplant: May 22 🍅 Harvest: Jul 17 – Sep 11

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 Beaver County

How your county's soil matches Kale's growing requirements.

Soil pH

Your soil pH (5.1–6.6) is more acidic than Kale prefers (6.0–7.5). Add garden lime to raise pH.

Soil Texture

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

Organic Matter

Organic matter is moderate (3.1%). Annual compost additions will help Kale.

How to Plant Kale

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 Kale

4
successive plantings in your 171-day season

Sow every 5.7 weeks. Last sowing by Aug 09 to harvest before frost.

For a dedicated fall crop, sow by Aug 09.

Plant Water Budget

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

Monthly Watering Guide for Kale

Kale 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 Kale Needs Rainfall You Supplement Action
Jan 3" 0" ❄️ Dormant
Feb 2.8" 0" ❄️ Dormant
Mar 3" 0" ❄️ Dormant
Apr 3.5" 3.1" 0.4" 💧 Light watering
May 3.5" 3.6" 0" ✅ Rainfall sufficient
Jun 3.5" 3.8" 0" ✅ Rainfall sufficient
Jul 3.5" 3.4" 0.1" 💧 Light watering
Aug 3.5" 3.3" 0.2" 💧 Light watering
Sep 3.5" 3.5" 0" ✅ Rainfall sufficient
Oct 3.5" 3.3" 0.2" 💧 Light watering
Nov 2.7" 0" ❄️ Dormant
Dec 2.5" 0" ❄️ Dormant

Water needs are for active growing months only (Apr–Oct in Beaver County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.

Kale 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.

Kale needs ~1,050 GDD — county provides 2,992 GDD Excellent fit

Kale Planting Timeline — Beaver County, PA

Kale Planting Calendar

Activity When Date Range
Start Indoors March 26 Mar 26 – Apr 9
Transplant Outdoors April 30 Apr 30 – May 14
Direct Sow April 16 Apr 16 – May 7
Harvest June 25 Jun 25 – Aug 20
Fall Sowing August 9 Aug 9 – Aug 23

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

Month-by-Month Timeline

MonthActivities
January
February
March Start Indoors
April Start Indoors Transplant Outdoors Direct Sow
May Transplant Outdoors Direct Sow
June Harvest
July 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

50–70 days

🧪 Soil pH

Needs 6–7.5 · Your soil: too_acidic

🗺️ USDA Zone

Zone 6b

📆 Growing Season

171 days in Beaver County

Growing Tips for Kale in Beaver County

Direct sow Kale outdoors after April 30 in Beaver County when soil has warmed and frost danger has passed.

Common pests for Kale 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 or transplant in early spring or late summer. Harvest outer leaves first to keep plants productive. Kale overwinters in many climates and can provide greens all year.

Companion Planting

Good Companions

Avoid Planting Near

  • Strawberries
  • Tomatoes

Check more plant combinations with our Companion Planting Checker →

🌾 Save Your Own Kale Seeds
Life Cycle Biennial
Pollination Cross-Pollinated (insects)
How to Collect Allow 2nd year flower stalks to dry. Harvest pods when tan.
Storage Store airtight; viable 5 years at 35°F, under 50% humidity.

Isolate 1/2 mile from other brassicas (broccoli, cabbage, etc.) — they all cross.

Frequently Asked Questions

When should I plant Kale in Beaver County, PA?

Beaver County is in Zone 6b with an average last frost of April 30. Plan your Kale planting based on this frost date — see the calendar above for exact timing.

What planting zone is Beaver County, PA?

Beaver County, Pennsylvania is in USDA Hardiness Zone 6b. The average last spring frost is April 30 and first fall frost is October 18.

🌱

Your Beaver County Garden Planner — Free

A 24-page printable planner built for Beaver County (Zone 6b). 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 Beaver County, PA. Local conditions may vary. Last updated: May 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.