Agastache Growing Guide

Agastache foeniculum

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 mixing a balanced organic fertilizer into the soil before planting.

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.

Planting and Harvesting Calendar

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Pests which Affect Agastache

Aphids (General)

Slug

Snail