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When to plant Hyssop in Kit Carson County, CO

Plant Hyssop in Kit Carson County, between May 16 and May 30 — the only viable window. Zone 6a's short season (152 frost-free days) rules out a fall crop.

When to Plant Hyssop in Kit Carson County, CO

Kit Carson County, Colorado Zone 6a August

Top priorities for Kit Carson County, Colorado gardeners in August

We've pulled the most time-sensitive tasks for Kit Carson County, Colorado this August and put them front and centre. Tackle them in order.

Avg. last frost May 9
Avg. first frost October 8
Soil temp (4") 61°F
Watering High
Pest pressure High
Daylight 13.5 hrs
  1. Basket week: hyssop

    This is the payoff month. Bring a basket, bring a friend, and get into the beds.

September will be here before you know it — start on
  • First harvests: hyssop

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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.

Kit Carson County, Colorado is in USDA Zone 6a. The average last spring frost is May 9 and the first fall frost is October 8, giving you a growing season of approximately 152 days.

At an elevation of 6,382 feet, Kit Carson County receives approximately 23.2 inches of rainfall annually with predominantly loam soil. Summer highs average 85°F, providing good warmth for Hyssop during the growing season.

Kit Carson County, CO (Zone 6a) Moderate season
152 days
Last Spring Frost May 9
152 growing days
First Fall Frost October 8

Kit Carson County Soil Profile

Soil Type

Loam

Soil pH

6.0-7.0

Drainage

Well Drained

Hyssop Planting Timeline — Kit Carson County, CO

Hyssop Planting Calendar

Activity When Date Range
Transplant Outdoors May 16 May 16 – May 30
Harvest July 25 Jul 25 – Sep 26

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

Low — drought tolerant

📅 Days to Maturity

70–90 days

🧪 Soil pH

Needs 6–8 · Your soil: N/A

🗺️ USDA Zone

Zone 6a

📆 Growing Season

152 days in Kit Carson County

Growing Tips for Kit Carson 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

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Hyssop in Kit Carson County, CO?

Kit Carson County is in Zone 6a with an average last frost of May 9. Plan your Hyssop planting based on this frost date — see the calendar above for exact timing.

What planting zone is Kit Carson County, CO?

Kit Carson County, Colorado is in USDA Hardiness Zone 6a. The average last spring frost is May 9 and first fall frost is October 8.

When should I plant Hyssop in Kit Carson County, CO?

In Kit Carson County, CO, plant Hyssop after the last frost (around May 9) and before the first frost (around October 8). Best results when soil holds above 50°F.

What growing zone is Kit Carson County, CO for Hyssop?

Kit Carson County sits in USDA Zone 6a. Hyssop grows reliably in zones 3a through 9b, so it's a good fit here.

Can Hyssop grow in Kit Carson County's climate?

Yes — Hyssop grows well in Kit Carson County's temperate climate. Kit Carson County averages a 152-day frost-free season, with last frost around May 9 and first frost around October 8.

🌱

Your Kit Carson County Garden Planner — Free

A 22-page printable planner built for Kit Carson County (Zone 6a). 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 Kit Carson County, CO. Local conditions may vary. Last updated: August 2026.

Sources & credits

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