Dress up a Shady Patio: Compact astilbe varieties grow very well in containers. They can be planted on their own or be mixed with shade tolerant annuals and other perennials. Locate the container in a shady spot and water regularly to ensure the soil never gets completely dry.
How do you overwinter potted astilbe?
If you choose to pot them up, store them in a cool, dark place with screening over them to prevent rodent damage. Keep the soil moist, but not soggy, throughout the winter months. Transplant the divisions to the garden in early spring after the danger of frost has passed.
Do Astilbes like sun or shade?
When & Where to Plant Astilbe
Light: Astible grows best in part shade. It can thrive in full sun, but will need shade in the afternoon in hot summer climates. In full shade, flowering will be reduced. Soil: Astilbe thrives in moist, well-drained soil that has a slightly acidic pH (6.0).
When should I repot astilbe?
Moving astilbe plants is the right thing to do when the flowers have been planted in inappropriate spots, or have been overshadowed by neighboring plants. Perennials that bloom in the spring, including astilbe, should be transplanted in late summer or fall. This is the right time to divide too, if necessary.
How long does it take astilbe to grow?
Expect root growth to begin almost immediately after planting. In warm climates, top sprouts will form within a few weeks; in cool climates sprouts will emerge in the spring. Plant your roots in the fall 8 weeks before hard frosts typically occur in areas with winter temperatures that drop below freezing.
Does astilbe come back each year?
Astilbes are reliable perennials, but they do benefit from being divided every few years. This will regenerate your plant and increase your stock. Divide astilbes in the autumn after flowering or in early spring.
Can I leave perennials in pots over winter?
You can overwinter them by moving the pots into a cold frame or unheated garage for the winter after the first hard frost. Since all perennials require a period of dormancy or a cold treatment to bloom, don’t overwinter them in a greenhouse or other warm place where they will not go dormant.
Will astilbe survive winter?
Astilbe is a tough flowering perennial that is hardy from USDA zones 3 through 9. This means that it can survive the winter in even very harsh climates.
Why are my astilbe dying?
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. Use mulch to keep water in the soil but avoid soggy soil.
Is astilbe an invasive plant?
Astilbe spreads via underground rhizomes and can eventually develop into a large patch, though it is not considered invasive. It dies to the ground completely in winter, but the roots are very cold hardy. In general, astilbe excels in cold, moist climates and is more challenging to grow in hot, dry places.
How tall do astilbe grow?
Otherwise, astilbes are undemanding and hardy in garden zones 3 to 8. You can find varieties that range from 6 inches to over 40 inches tall, so you can grow them in containers, beds or borders. Try them in a cutting garden, or plant them to attract butterflies.
How far apart should astilbe be planted?
Planting: Plant astilbe 18 to 24 inches apart, and water in well.
Does astilbe need fertilizer?
Fertilizer. Astilbe plants need phosphorus to bloom, so choose a fertilizer with the makeup of 5-10-5 or 10-10-10. Rake the fertilizer into the soil two weeks before you plant, or sprinkle a few granules onto the soil after the astilbe has been planted.
