Agastache Growing Guide

Agastache foeniculum

Agastache

Crop Rotation Group

Miscellaneous ●

Soil

Average garden soil with excellent drainage.

Position

Full sun.

Frost tolerant

Agastache seedlings can be damaged by spring frost, but established plants often survive winter in climates where the soil does not freeze.

Feeding

Encourage fast growth by mulching soil with compost before planting.

Companions

The tall, arching flower spikes of agastache contrast beautifully with shorter, mound-forming flowers like alyssum or petunias. Agastache attracts bees and other beneficial insects.

Spacing

Single Plants: 11" (30cm) each way (minimum)
Rows: 11" (30cm) with 11" (30cm) row gap (minimum)

Sow and Plant

Set out stocky seedlings in late spring. Small agastache plants grow slowly at first, and gain size and bloom in late summer.
Our Garden Planner can produce a personalized calendar of when to sow, plant and harvest for your area.

Notes

Agastache tolerates summer drought better than many other flowers. Popular cultivars like ‘Blue Fortune’ are hardy to 5F (-15C) when well established. Some varieties bloom rose-red or orange.

Harvesting

As flower spikes fade, trim them off with scissors or pruning shears.

Troubleshooting

Agastache has few pest problems and is seldom eaten by deer. Heavy winter mulching can cause the dormant plants to rot.

Planting and Harvesting Calendar

< Back to All Plants

Pests which Affect Agastache