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When to Plant Rue in Kansas

Rue is a bitter, aromatic perennial herb with bluish-green foliage used historically in medicine and as a pest deterrent. Handle with care as its sap can cause skin irritation.

Kansas spans USDA hardiness zones 5b, 6a, 6b (with planting data available), so planting dates vary by your location within the state. Click your zone below for the most accurate dates.

Find Your County

Click your county for exact Rue planting dates based on your local frost dates.

Rue Planting Calendar for Kansas

Zone 5b ~178 day growing season · Full guide →

Last frost: April 18 · First frost: October 13 · 178 day season

Activity When Date Range
Transplant Outdoors April 25 Apr 25 – May 9
Harvest July 4 Jul 4 – Sep 5
Zone 6a ~193 day growing season · Full guide →

Last frost: April 10 · First frost: October 20 · 193 day season

Activity When Date Range
Transplant Outdoors April 17 Apr 17 – May 1
Harvest June 26 Jun 26 – Aug 28
Zone 6b ~205 day growing season · Full guide →

Last frost: April 3 · First frost: October 25 · 205 day season

Activity When Date Range
Transplant Outdoors April 10 Apr 10 – Apr 24
Harvest June 19 Jun 19 – Aug 21

Growing Tips for Kansas

Start seeds indoors or direct sow. Plant in well-drained soil. Wear gloves when handling as sap can cause phytophotodermatitis. Prune in early spring.

Frequently Asked Questions

When should I plant Rue in Kansas?

Planting dates for Rue in Kansas depend on your USDA zone. Kansas spans zones 5b, 6a, 6b. Check the planting calendar above for your specific zone's frost dates and planting windows.

What zone is Kansas for planting?

Kansas contains USDA hardiness zones 5b, 6a, 6b. Your specific zone depends on your location within the state — northern and higher-elevation areas are in colder zones, while southern and coastal areas are warmer.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals, University Cooperative Extension planting guides. Last updated: April 2026.