Pumila is a popular dwarf astilbe that forms a low carpet of green leaves topped with fuzzy, stiff, lilac pink plumes. It is one of the last astilbes to bloom, peaking from late summer into early fall.
Only about 10 inches tall, it works as a groundcover in shade, at the front of a border or in containers. As a Chinese astilbe, it tolerates a bit more sun and dryness than other types. Deer and rabbits leave it alone.
What it looks like
Stiff, narrow, upright, fuzzy plumes 4 to 6 inches long of tiny lilac pink flowers, held on short, straight stems just above the foliage. Leaves are compound, toothed, coarsely textured and mid-green, forming a low, spreading carpet. The plant is about 10 inches tall in bloom and 12 to 16 inches wide, spreading over time. At peak bloom the low green mat bristles with upright lilac pink spikes.
Growing it with lavender
Astilbe needs moist, rich soil and shade, the opposite of lavender's dry, sunny bed, so plant it in a shade garden or along a damp woodland edge with hostas and ferns.
Care
Grow in part shade in rich, moist soil; this Chinese type tolerates more sun and short dry spells than other astilbes, but performs far better with steady moisture. Hardy in USDA zones 4-9. Mulch well, water in dry weather, and cut back old plumes in spring.
At a glance
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Botanical name: Astilbe chinensis
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Flower color: Lilac pink
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Foliage: Mid-green
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Growth habit: Low, spreading carpet
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Mature size: 10 in tall × 12–16 in wide
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USDA hardiness zones: 4–9
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Light: full sun, part sun to part shade, full shade
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Bloom start: Early-August
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Peak bloom: Late-August
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Bloom pattern: Single Flush
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Deer resistance: Resistant
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Pollinator value: Good
Sizes and shipping
Dormant bare-root plant, sold in boxes of 25 per variety (order in multiples of 25). Bare-root plants ship or are picked up March 1–May 31 only. They are soil-free, so they may ship to every state in that window. Dormant plants often show little or no top growth on arrival; plant or heel them in promptly.