When to Plant Lavender in Sumner County, KS
Lavender is a fragrant perennial herb with silvery foliage and purple flower spikes. It is prized for its essential oils, culinary uses, and ornamental beauty.
Sumner County, Kansas is in USDA Zone 6b. The average last spring frost is April 11 and the first fall frost is October 26, giving you a growing season of approximately 198 days.
At an elevation of 637 feet, Sumner County receives approximately 29 inches of rainfall annually with predominantly loam soil. Summer highs average 85°F, providing good warmth for Lavender during the growing season.
Sumner County Soil Profile
Soil Type
Loam
Soil pH
6.4-7.8
Drainage
Well Drained
Plant Planting Risk Windows
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 Sumner County
How your county's soil matches Lavender's growing requirements.
Soil pH
Your soil pH (6.4–7.8) overlaps with Lavender's range (6.5–8.0), though not a perfect match.
Soil Texture
The loam soil in Sumner County is excellent for Lavender — good drainage, moisture retention, and nutrient holding capacity.
Organic Matter
Organic matter is moderate (3.6%). Annual compost additions will help Lavender.
How to Plant Lavender
Plant Water Budget
Water stress score is 6/10 — consider drought-tolerant varieties and mulching
Lavender Planting Timeline — Sumner County, KS
Lavender Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Transplant Outdoors | April 18 | Apr 18 – May 2 |
| Harvest | July 18 | Jul 18 – Oct 31 |
Plant 0.5" deep · 8" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | Transplant Outdoors |
| May | Transplant Outdoors |
| June | — |
| July | Harvest |
| August | Harvest |
| September | Harvest |
| October | Harvest |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
0.3"/week · Natural rainfall sufficient
📅 Days to Maturity
90–200 days
🧪 Soil pH
Needs 6.5–8 · Your soil: acceptable
🗺️ USDA Zone
Zone 6b
📆 Growing Season
198 days in Sumner County
Growing Tips for Lavender in Sumner County
Direct sow Lavender outdoors after April 11 in Sumner County when soil has warmed and frost danger has passed.
Your 198.0-day growing season in Sumner County is tight for Lavender (90.0-200.0 days to maturity). Start indoors and choose early-maturing varieties.
General growing tips
Plant in well-drained, sandy soil. Avoid heavy mulching around the crown. Prune after flowering but do not cut into old wood. Lavender resents wet winter conditions.
Companion Planting
Good Companions
Level Up Your Garden
Lavender in Other Locations
Frequently Asked Questions
When should I plant Lavender in Sumner County, KS?
Sumner County is in Zone 6b with an average last frost of April 11. Plan your Lavender planting based on this frost date — see the calendar above for exact timing.
What planting zone is Sumner County, KS?
Sumner County, Kansas is in USDA Hardiness Zone 6b. The average last spring frost is April 11 and first fall frost is October 26.
Plan Your Garden with Confidence
Get our free Garden Planner — designed to help Sumner County gardeners in Zone 6b organize planting dates, track what's growing, and never miss a planting window.
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