How can I encourage my Agastache to continue to bloom?

Trim the tips of the growth in spring when the plants reach around 6 inches tall to promote branching. Regularly remove spent flowers during the growing season to ensure continuous blooming.

Do I need to deadhead my Agastache?

Deadheading agastache flowers promotes more blooms and helps manage the plant's tendency to self-seed. While not essential, removing spent flowers maintains plant neatness and prevents excessive self-seeding by agastache.

For further pruning, consider whether you are cultivating agastache as a perennial or annual plant. For perennials, trim back about one-third of the plant in spring to stimulate fresh growth. Continue pinching and deadheading until midsummer, as new growth is sensitive to cold and could jeopardize the plant's survival in winter. If growing agastache as an annual, ongoing pinching and deadheading throughout the season is suitable.

Are agastache invasive?

If you have planted hummingbird mint, or any other type of agastache, in your garden, you may notice that it spreads similar to mint. This plant tends to self-seed abundantly, but removing the seedlings is a simple task. Additionally, you can prevent seeds from dropping by removing the spent flowerheads. Despite its tendency to spread, agastache is not classified as invasive, especially if you choose a variety native to your region.

Is it easy to grow agastache from seed?

Agastache can be grown from seed quite easily, but the seeds need cold stratification and light for germination. For this reason, it is recommended to start agastache seeds in the fall or winter with minimal covering.