FAQ: When Should You Cut Back Astilbe?

Astilbes are easy to care for, provided they’re growing in the right growing conditions. They don’t need deadheading. Simply cut back plants after flowering and divide every three or four years.

Should astilbe be cut back for winter?

When winterizing astilbe plants, you can cut all the foliage off, leaving just a 3-inch (7.5 cm) stem above ground. It makes astilbe winter care a little easier, and all new growth will come back to replace it in the spring. They’ll dry out and provide some interest in your garden when most other plants have died back.

Do astilbe need to be cut back in the fall?

After blooming has finished for the season, feel free to clip off any spent flower stems. Your astilbes will continue to provide attractive foliage until fall. After the first frost, the leaves may yellow; trim leaves if you wish and fresh growth will come next spring.

How do you care for astilbe after flowering?

Astilbe Plant Care The right astilbe growing conditions and fertilizer result in large feathery plumes. Occasionally amending the soil with compost or fertilizing with an organic product or fertilizer high in phosphorus is also recommended. Spent plumes can be cut back in spring or left alone for winter interest.

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How do you keep astilbe blooming all summer?

Take good care of your new astilbe plants. Do not plant them in full sun. After a few years, you will need to divide them in the fall when they start to get crowded. Treat them right and you will have astilbe plant blooms all summer long.

How do you winterize astilbe?

To winterize astilbes and other herbaceous perennials, a gardener removes all stems and foliage down to the soil level in the autumn and tucks the roots in for the winter under a blanket of mulch. Use the garden shears to cut the astilbe stems and foliage back to approximately 3 to 4 inches above the soil level.

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.

Will astilbe come back every year?

Are they annuals or perennials? Astilbe are perennials. They bloom in the spring until late autumn and then they’ll naturally turn color and drop all their leaves. When cared for over the winter, they’ll come back in the spring and bloom again.

Why are my astilbe turning brown?

The most common cause of browning astilbe is poor conditions. Astilbe thrive in moist conditions with soil that drains well and partial shade. Make sure you water astilbe plants regularly and don’t let them get too much direct sunlight. If necessary, remove infected leaves or entire plants and destroy them.

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Does astilbe need fertilizer?

Astilbe is a perennial and it really only needs a yearly application of a basic slow release flowering perennial fertilizer. Flowering plants need phosphorus to bloom, so look for a fertilizer for astilbe plants with a middle number that’s at least as high as the other two numbers, like 5-10-5 or 10-10-10.

How do you maintain astilbe?

All astilbes, even the more drought-tolerant varieties, prefer cool, moist soil rich in organic matter. Keep the soil evenly damp but not soggy, especially during the winter when plants are dormant. Avoid planting in heavy clay soils and sites with poor drainage.

How do I get my astilbe to bloom again?

Provide a slow-release fertilizer with a ratio of 3-1-2 in spring, and then feed the plant a high-nitrogen fertilizer when the plant is setting buds in late summer or early autumn. If possible, amend the soil regularly with compost or well-rotted manure.

Should you cut back astilbe after flowering?

Astilbes are easy to care for, provided they’re growing in the right growing conditions. They don’t need deadheading. Simply cut back plants after flowering and divide every three or four years.

Are astilbe good in shade?

Lovers of rich, moist soil, astilbes surprise you with their sheer vibrancy and range of flower and foliage combinations. These hardy perennials are happy in sun or shade, adding drama to bog gardens, damp borders and even containers.

How many astilbe Can I plant together?

Like most perennials, astilbes look their best in groups of three or more plants of the same color.

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