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When to Plant Haskaps in Jack County, TX

Haskaps (honeyberries) are extremely cold-hardy shrubs producing elongated blue berries with a complex blueberry-raspberry flavor. They fruit very early in the season.

Jack County, Texas is in USDA Zone 7b. The average last spring frost is March 26 and the first fall frost is November 9, giving you a growing season of approximately 228 days.

At an elevation of 2,081 feet, Jack County receives approximately 66.9 inches of rainfall annually with predominantly clay soil. Summer highs average 89Β°F, providing good warmth for Haskaps during the growing season. Clay soil retains moisture well for Haskaps, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Haskaps root diseases.

Jack County, TX (Zone 7b) Long season
228 days
Last Spring Frost March 26
228 growing days
First Fall Frost November 9

Jack County Soil Profile

Soil Type

Clay

Soil pH

7.3-7.6

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season
Transplant: Apr 9
Recommended (50%) ✓ Fits season
Transplant: Apr 16
Safe Start (90%) ✓ Fits season
Transplant: May 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.

Soil Compatibility in Jack County

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

Soil pH

Your soil pH (7.3–7.6) overlaps with Haskaps's range (5.5–7.5), though not a perfect match.

Soil Texture

Heavy clay soil (42% clay) in Jack County compacts easily and drains slowly. Amend with compost and avoid working soil when wet.

Drainage

Drainage is adequate for Haskaps.

Organic Matter

Organic matter is moderate (3.2%). Annual compost additions will help Haskaps.

How to Plant Haskaps

48"
Between Plants
72"
Between Rows

Plant Water Budget

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

Monthly Watering Guide for Haskaps

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

Month Haskaps Needs Rainfall You Supplement Action
Jan β€” 2" 0" ❄️ Dormant
Feb β€” 2.3" 0" ❄️ Dormant
Mar 4.3" 3.7" 0.6" πŸ’§ Light watering
Apr 4.3" 8" 0" βœ… Rainfall sufficient
May 4.3" 9.7" 0" βœ… Rainfall sufficient
Jun 4.3" 9.6" 0" βœ… Rainfall sufficient
Jul 4.3" 8.5" 0" βœ… Rainfall sufficient
Aug 4.3" 7.6" 0" βœ… Rainfall sufficient
Sep 4.3" 6.7" 0" βœ… Rainfall sufficient
Oct 4.3" 4.3" 0" βœ… Rainfall sufficient
Nov 4.3" 2.6" 1.7" πŸ’§ Light watering
Dec β€” 1.7" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Jack County). Supplement amounts are based on average rainfall β€” actual needs vary with temperature, soil, and mulching.

Haskaps 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" β€” every day above 50Β°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.

Haskaps needs ~15,284 GDD — county provides 3,819 GDD May not mature

Haskaps Planting Timeline β€” Jack County, TX

Haskaps Planting Calendar

Activity When Date Range
Transplant Outdoors April 16 Apr 16 – Apr 30

Β· 48" apart Β· Rows 72" apart

Month-by-Month Timeline

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

Growing Conditions

β˜€οΈ Sun

Full Sun (6-8+ hours)

πŸ’§ Water

1"/week Β· Natural rainfall sufficient

πŸ“… Days to Maturity

730–1095 days

πŸ§ͺ Soil pH

Needs 5.5–7.5 Β· Your soil: acceptable

πŸ—ΊοΈ USDA Zone

Zone 7b

πŸ“† Growing Season

228 days in Jack County

Growing Tips for Haskaps in Jack County

Direct sow Haskaps outdoors after March 26 in Jack County when soil has warmed and frost danger has passed.

With Jack County's clay soil (42% clay), work in 3-4 inches of compost before planting Haskaps. Avoid tilling when soil is wet to prevent compaction.

Your 228.0-day growing season in Jack County is tight for Haskaps (730.0-1095.0 days to maturity). Start indoors and choose early-maturing varieties.

General growing tips

Plant at least two different varieties for cross-pollination. Fruits ripen 2-3 weeks before strawberries. Protect from birds. Very low maintenance once established. Tolerates extreme cold.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Haskaps in Jack County, TX?

Jack County is in Zone 7b with an average last frost of March 26. Plan your Haskaps planting based on this frost date β€” see the calendar above for exact timing.

What planting zone is Jack County, TX?

Jack County, Texas is in USDA Hardiness Zone 7b. The average last spring frost is March 26 and first fall frost is November 9.

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Plan Your Garden with Confidence

Get our free Garden Planner β€” designed to help Jack County gardeners in Zone 7b 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 Jack County, TX. Local conditions may vary. Last updated: April 2026.