Should Agastache be cut back?
Agastache: End of Season Care If growing Agastache as a perennial, don’t prune or deadhead past midsummer. Pruning too late in the season will stimulate new growth in fall that may not survive the winter. If growing Agastache as an annual, keep trimming and deadheading as needed. Regular deadheading (1-2 times a week) encourages the plants to put their energy into creating continuous growth and more blooms. Deadheading is a simple task, that only requires you to pinch or cut off the flower stem below the spent bloom, and just above the newest set of healthy leaves.Pruning Agastache To Help It Bloom Deadheading is used to extend the blooming season and to control self-seeding plants. After the flowers die back and before they set seed, cut the stems down to a set of leaves. This will allow any flower buds further down the stem to develop and continue the blooming season.Pruning and deadheading: Cut back dormant stems to half their height to protect from winter winds. In late winter or early spring, cut the remaining stems back to the ground before plants break dormancy. Pinch new growth to promote more branching and a bushier habit. Deadhead spent flowers to promote rebloom.
Can I split Agastache?
Yes, Agastache can be divided every 3-4 years in early spring to rejuvenate plants and propagate new ones. Agastache, on the other hand, typically live for three to five years. If yours are only lasting one year, watch for too much water, whether it’s winter wetness, soil that’s too “heavy,” or too much watering during the growing season.
Can you take cuttings from Agastache?
Agastache can be propagated by cuttings in late summer. Find non-flowering shoots 5-10cm long and snip off the plant. There are many companion plants that grow well with Agastache. Staying with the dry conditions theme, Russian Sage, Lavender, and Rosemary all grow in similar conditions that Agastache loves.
Does Agastache spread?
Once established, agastache will spread fairly vigorously from seed. To collect the seeds, let them mature on the plant until they are fully dry but get them before the open and disperse. Agastache may be grown from seed sown early indoors and transplanted outside after frost, sown directly in the garden in summer, or grown from potted plants. Sowing Seed Indoors: Sow seeds indoors 6-8 weeks before last spring frost date. Sow ¼ inch deep in seed-starting formula.
Should Agastache be cut back?
The first pruning for Agastache is very early in the spring as the new growth is starting. Once the plants are 6-12 inches tall and have developed many branching stems, it is time to pinch back the growth tips. Pinching back involves snipping the stems back to a group of leaves. Trimming & Pruning: Trim back Agastache plants by pinching the new growth in spring to promote bushier growth. Deadhead (trim) spent flower stalks to keep the plant tidy. If growing Agastache as a perennial, don’t prune or deadhead past midsummer.