How to Care for Agastache Plants

Agastache is a perennial herb native to eastern Asia and North America. Grown in most parts of the United States, with the exception of warm southern climates, some species of agastache are known for their distinct powder-blue flowers, whereas others are known for their culinary uses. In particular, Agastache foeniculum, grown primarily in North Dakota, is used as a sweetener and can be found in many teas. Agastache is hardy and requires little maintenance. Nevertheless, there are a few things you can do to get the most out of your agastache.

Instructions

- 1
  Water in the morning (watering at night promotes diseases). Agastache is fairly drought tolerant. Nevertheless, these plants can benefit from regular morning watering. Consider watering twice, a few minutes apart. This will help water soak in deeper.
- 2
  Apply an all purpose granular fertilizer in midsummer according to label directions. This will help the agastache thrive and stave off insects.
- 3
  Prune back stems in the spring, but avoid pruning in the fall or winter. According to the Washington State University Clark County Extension program, dead stems benefit agastache by providing some frost protection. In addition, they look nice when covered with snow.

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