© RHS / Tim Sandall

Introducing...

Agastache

Common name: anise hyssop, giant hyssop, Korean mint

Liquorice scented foliage and spires of flowers that bees love; these are just a couple of reasons to plant agastache. They bring colour to borders from midsummer to autumn and combine well with late-flowering perennials, grasses, and dahlias. Several are vulnerable to frost, so you could grow these plants as annuals.

Looks

The tall, upright herbaceous border perennials usually have spires of rich violet-blue flowers. The tender, often woody based types are often grown as an annuals and come in a range of warm shades including apricot. The foliage is usually aromatic and green, greyish-green or bronze-tinged.

Likes

These plants like full sun and fertile soil that drains easily.

Dislikes

Agastache will rot in wet soil and it’s best to avoid shade for the best flowering. The woodier species will not tolerate hard frosts.

Did you know?

Agastache are one of the very best plants for attracting bees to your garden.

Growing guide

Agastache we recommend

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Useful advice

Cuttings: semi-ripe

Cuttings: semi-ripe

Downy mildews

Downy mildews

Overwintering tender plants: lifting or mulching

Overwintering tender plants: lifting or mulching

Perennials: dividing

Perennials: dividing

Perennials: planting

Perennials: planting

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