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When to Plant Hyssop in Otsego County, NY

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.

Otsego County, New York is in USDA Zone 5a. The average last spring frost is May 10 and the first fall frost is October 12, giving you a growing season of approximately 155 days.

At an elevation of 909 feet, Otsego County receives approximately 44.5 inches of rainfall annually with predominantly silt loam soil. Summer highs average 85ยฐF, providing good warmth for Hyssop during the growing season.

Otsego County, NY (Zone 5a) Moderate season
155 days
Last Spring Frost May 10
155 growing days
First Fall Frost October 12

Otsego County Soil Profile

Soil Type

Silt Loam

Soil pH

5.2-6.2

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (17 days to spare)
Transplant: May 8 🍅 Harvest: Jul 17 – Sep 18
Recommended (50%) ✓ Fits season (15 days to spare)
Transplant: May 17 🍅 Harvest: Jul 26 – Sep 27
Safe Start (90%) ✓ Fits season (14 days to spare)
Transplant: Jun 2 🍅 Harvest: Aug 11 – Oct 13

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
1.2″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Hyssop needs ~1,100 GDD — county provides 2,131 GDD Excellent fit

Hyssop Planting Timeline โ€” Otsego County, NY

Hyssop Planting Calendar

Activity When Date Range
Transplant Outdoors May 17 May 17 โ€“ May 31
Harvest July 26 Jul 26 โ€“ Sep 27

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

155 days

Growing Tips for Otsego 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 Otsego County, NY?

Otsego County is in Zone 5a with an average last frost of May 10. Plan your Hyssop planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Otsego County, NY?

Otsego County, New York is in USDA Hardiness Zone 5a. The average last spring frost is May 10 and first fall frost is October 12.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Otsego 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 Otsego County, NY. Local conditions may vary. Last updated: April 2026.