Should Astilbe Be Cut Back in the Fall

When winterizing astilbe plants, there are a couple routes you can take with the flowers. Deadheading astilbe won’t encourage new flowers, so you should leave them in place through the fall. … When winterizing astilbe plants, you can cut all the foliage off, leaving just a 3-inch (7.5 cm) stem above ground.

When should I cut back my astilbe?

Pruning. Extremely little maintenance is required of astilbe plants. The flower heads will dry on the plant and remain attractive for many months. The flowers can be cut whenever they start to look ragged, or left up for winter interest and cut back in the spring.

Should you cut astilbe flowers turning brown?

Astilbe foliage generally holds up well through the growing season, as long as the plants are adequately watered during dry spells. If individual leaves turn yellow, brown or wither, they should be pruned. Following this pruning, you should get fresh growth in the spring.