Where to Plant Astilbe
This showy garden perennial produces spikes of beautiful flowers that enliven the garden and add texture to flower arrangements in spring and summer. Hardy in USDA Zones 4-8, it grows best in partial shade, although it tolerates sun as long as it is kept moist.
How and When to Plant Astilbe
Plant astilbe early in the spring in well-drained soil with added compost and a general-purpose granular fertilizer. The cool, moist soil prompts the plant to develop a robust root system.
Astilbe Care Tips
Light
When it comes to light, astilbes are versatile. Depending on the variety, they can take anything from full sun to almost full shade, but partial shade is their preference. In full sun, astilbes must receive adequate water throughout the growing season.
Soil and Water
Astilbes are fairly easy-to-grow plants, with one main stipulation: they need adequate water. They like consistently moist soils, and they’ll suffer without it. So be sure to plant in well-drained soils with lots of organic matter. Amending the soil with additional compost can help retain water and keep these moisture-loving plants happy. If the soil dries out too much, the leaves on your astilbes will begin to brown and curl.
Fertilizer
Before planting, rake a general-purpose granular fertilizer, such as 5-10-5, into the soil. The plant needs phosphorus to bloom. After the plants are established, an annual application of the same fertilizer is all the plants need.
How to Propagate Astilbe
Division is the most efficient way to propagate astilbe. These plants grow from rhizomes. In the late fall, dig around the edge of the plant to reveal the rhizomes. Use your hands to gently pull some of the rhizomes away from the main portion of the root structure, being careful to capture the “eyes” the rhizomes grow from. After preparing a new location with loose, well-draining soil and compost, plant the new astilbe directly in the garden. You’ll see new growth in the spring. Astilbe can be grown from seed, but the process takes much longer, and you aren’t guaranteed a new plant identical to the parent.
Types of Astilbe
‘Chocolate Shogun’ Astilbe
Astilbe ‘Chocolate Shogun’ is a recent introduction with rich chocolate-purple foliage that is some of the darkest on the market. Loose panicles of light pink blooms show in late summer. Zones 4-8
‘Color Flash’ Astilbe
Astilbe ‘Color Flash’ features beautiful foliage that emerges bright green and ages to bronze, copper, and russet, providing season-long interest. Zones 4-8
Dwarf Chinese Astilbe
Astilbe chinensis ‘Pumila’ is a low-growing groundcover with glossy green foliage and is only 6 inches tall. Grape-scented lavender bloom spires reach only 1 foot tall. Zones 4-8
‘Fanal’ Astilbe
Astilbe ‘Fanal’ is one of the best red-flowering types. It blooms in midsummer with dark red flowers on reddish-bronze leaves. It grows to 2 feet tall. Zones 4-8
‘Federsee’ Astilbe
Astilbe ‘Federsee’ bears dense rose-pink blooms on upright stems to 3 feet tall. It has better drought tolerance than most astilbes. Zones 4-8
‘Superba’ Chinese Astilbe
Astilbe chinensis var. taquetti ‘Superba’ is a large plant growing to 4 feet tall. It bears magenta flowers in mid-to-late summer on shiny, dark green leaves. Zones 4-8
‘Visions’ Chinese Astilbe
Astilbe chinensis ‘Visions’ has fern-like foliage that is bronze-green with fragrant raspberry pink blooms in midsummer. Zones 4-9
Astilbe Companion Plants
Hosta
Hosta is one of the most commonly grown garden plants. Hostas vary from tiny plants suitable for troughs or rock gardens to massive 4-foot clumps. The larger varieties have heart-shaped leaves almost 2 feet long that can be puckered or wavy-edged. They can be white or green variegated, blue-gray, chartreuse, or emerald-edged—the variations are virtually endless. Hostas in new sizes with new foliage features seem to appear each year. This tough, shade-loving perennial, also known as plantain lily, blooms with white or purplish lavender funnel-shaped or flared flowers in summer. Some are intensely fragrant. Hostas are a favorite of slugs and deer.
Coral Bells
Exciting new selections with incredible foliage patterns have put coral bells on the map. Previously enjoyed mainly for their spires of dainty reddish flowers, coral bells are now grown as much for the unusual mottling and veining of different-color leaves. The low clumps of long-stemmed evergreen or semi-evergreen lobed foliage make coralbells fine groundcover plants. They enjoy humus-rich, moisture-retaining soil. Beware of heaving in areas with frigid winters.
Japanese Painted Fern
One of the most elegant ferns available for your garden, Japanese painted ferns are washed with gorgeous silver and burgundy markings. Lady fern is equally grand, though not quite as showy. Either will add interest and texture to shady spots. Closely related to each other, Japanese painted ferns and lady ferns are sometimes crossed to create attractive hybrids. Unlike most ferns, these toughies can thrive in dry soil. They’ll tolerate some sun if they have ample water.
Garden Plans for Astilbe
Cold-Climate Shade Garden Plan
The darker parts of your yard don’t need to be boring. Use these hardy perennials to add color to shady spots in your landscape.
Long-Blooming Rock Garden Plan
This colorful rock garden is designed around a couple of very large boulders but could easily be adapted to any rock garden setting.
Easy-Care Summer-Blooming Shade Garden Plan
This mix of flowering shrubs and perennials will fill your yard with color all summer long—plus provide interest in spring, fall, and winter.
Beginner Garden for Shade
This simple plan can make your garden design look like a pro’s. Now, anyone can enjoy a perennial shade garden with our selection of foolproof plants.
Bold Woodland Garden Plan
Add a bright spot of color to an area under a canopy of tree leaves.
No-Fuss Shade Garden Plan
This garden plan is the perfect way to add color to a shaded spot in your yard. It features easy-growing perennial flowers such as hosta, bleeding heart, and hellebore.
