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When to Plant Hardy Kiwi in Blair County, PA

Blair County, Pennsylvania Zone 6b May

Your May planting checklist for Blair County, Pennsylvania

Here's what deserves your attention in Blair County, Pennsylvania this month. Everything below is tailored to Zone 6b and timed around your local frost dates.

Avg. last frost April 25
Avg. first frost October 19
Soil temp (4") 63°F
Watering Low
Pest pressure Low
Daylight 14.3 hrs
  1. Set out hardy kiwi seedlings

    Pinch off the lowest leaves on each seedling before you plant — it reduces water loss while the roots catch up.

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Hardy kiwi produces grape-sized, smooth-skinned fruits eaten whole without peeling. Unlike fuzzy kiwi, it is extremely cold-hardy to -25F once established.

Blair County, Pennsylvania is in USDA Zone 6b. The average last spring frost is April 25 and the first fall frost is October 19, giving you a growing season of approximately 177 days.

At an elevation of 41 feet, Blair County receives approximately 43.6 inches of rainfall annually with predominantly silt loam soil. Summer highs average 90°F, providing good warmth for Hardy Kiwi during the growing season.

Blair County, PA (Zone 6b) Moderate season
177 days
Last Spring Frost April 25
177 growing days
First Fall Frost October 19

Blair County Soil Profile

Soil Type

Silt Loam

Soil pH

5.2-6.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season
Transplant: May 8
Recommended (50%) ✓ Fits season
Transplant: May 16
Safe Start (90%) ✓ Fits season
Transplant: Jun 4

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 Blair County

How your county's soil matches Hardy Kiwi's growing requirements.

Soil pH

Your soil pH (5.2–6.8) overlaps with Hardy Kiwi's range (5.5–7.0), though not a perfect match.

Soil Texture

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

Organic Matter

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

How to Plant Hardy Kiwi

72"
Between Plants
96"
Between Rows

Plant Water Budget

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

Monthly Watering Guide for Hardy Kiwi

Hardy Kiwi needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.

Month Hardy Kiwi Needs Rainfall You Supplement Action
Jan 3.6" 0" ❄️ Dormant
Feb 2.7" 0" ❄️ Dormant
Mar 3.8" 0" ❄️ Dormant
Apr 4.3" 4" 0.3" 💧 Light watering
May 4.3" 4" 0.3" 💧 Light watering
Jun 4.3" 4" 0.3" 💧 Light watering
Jul 4.3" 3.9" 0.4" 💧 Light watering
Aug 4.3" 4.1" 0.2" 💧 Light watering
Sep 4.3" 3.6" 0.7" 💧 Light watering
Oct 4.3" 3.2" 1.1" 💧 Light watering
Nov 3.1" 0" ❄️ Dormant
Dec 3.6" 0" ❄️ Dormant

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

Hardy Kiwi 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.

Hardy Kiwi needs ~25,550 GDD — county provides 3,097 GDD May not mature

Hardy Kiwi Planting Timeline — Blair County, PA

Hardy Kiwi Planting Calendar

Activity When Date Range
Transplant Outdoors May 16 May 16 – May 30

· 72" apart · Rows 96" apart

Month-by-Month Timeline

MonthActivities
January
February
March
April
May Transplant Outdoors
June
July
August
September
October
November
December

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Natural rainfall sufficient

📅 Days to Maturity

1095–1825 days

🧪 Soil pH

Needs 5.5–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 6b

📆 Growing Season

177 days in Blair County

Growing Tips for Hardy Kiwi in Blair County

Direct sow Hardy Kiwi outdoors after April 25 in Blair County when soil has warmed and frost danger has passed.

Your 177.0-day growing season in Blair County is tight for Hardy Kiwi (1095.0-1825.0 days to maturity). Start indoors and choose early-maturing varieties.

General growing tips

Plant male and female vines for pollination. Provide very strong trellising as vines become massive. Prune similarly to grapes. Protect young plants from late spring frost.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Hardy Kiwi in Blair County, PA?

Blair County is in Zone 6b with an average last frost of April 25. Plan your Hardy Kiwi planting based on this frost date — see the calendar above for exact timing.

What planting zone is Blair County, PA?

Blair County, Pennsylvania is in USDA Hardiness Zone 6b. The average last spring frost is April 25 and first fall frost is October 19.

🌱

Your Blair County Garden Planner — Free

A 24-page printable planner built for Blair 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 Blair 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.