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When to Plant Hyssop in Buffalo County, NE

Hyssop is a semi-evergreen perennial herb with intense blue flower spikes that attract bees and butterflies. It has a minty, slightly bitter flavor used in liqueurs and teas.

Buffalo County, Nebraska is in USDA Zone 5a. The average last spring frost is April 29 and the first fall frost is October 8, giving you a growing season of approximately 162 days.

At an elevation of 1,048 feet, Buffalo County receives approximately 21 inches of rainfall annually with predominantly loam soil. Summer highs average 87ยฐF, providing good warmth for Hyssop during the growing season.

Buffalo County, NE (Zone 5a) Moderate season
162 days
Last Spring Frost April 29
162 growing days
First Fall Frost October 8

Buffalo County Soil Profile

Soil Type

Loam

Soil pH

6.6-7.2

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (23 days to spare)
Transplant: Apr 30 🍅 Harvest: Jul 9 – Sep 10
Recommended (50%) ✓ Fits season (22 days to spare)
Transplant: May 6 🍅 Harvest: Jul 15 – Sep 16
Safe Start (90%) ✓ Fits season (18 days to spare)
Transplant: May 21 🍅 Harvest: Jul 30 – Oct 1

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.

Plant Water Budget

Plant needs
0.5″/week
Rainfall provides
0.5″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Hyssop needs ~1,220 GDD — county provides 2,470 GDD Excellent fit

Hyssop Planting Timeline โ€” Buffalo County, NE

Hyssop Planting Calendar

Activity When Date Range
Transplant Outdoors May 6 May 6 โ€“ May 20
Harvest July 15 Jul 15 โ€“ Sep 16

Plant 0.5" deep ยท 8" apart ยท Rows 12" apart

Month-by-Month Timeline

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

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Low โ€” drought tolerant

Days to Maturity

70โ€“90 days

Soil pH

6 โ€“ 8

USDA Zone

Zone 5a

Growing Season

162 days

Growing Tips for Buffalo County

Start seeds indoors or direct sow in spring. Prune back in early spring to encourage bushy growth. Hyssop is drought-tolerant once established and thrives in poor soil.

Companion Planting

Good Companions

Avoid Planting Near

  • Radish

Level Up Your Garden

Frequently Asked Questions

When should I plant Hyssop in Buffalo County, NE?

Buffalo County is in Zone 5a with an average last frost of April 29. Plan your Hyssop planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Buffalo County, NE?

Buffalo County, Nebraska is in USDA Hardiness Zone 5a. The average last spring frost is April 29 and first fall frost is October 8.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Buffalo County gardeners in Zone 5a 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 Buffalo County, NE. Local conditions may vary. Last updated: April 2026.