Spiraea betulifolia ‘Tor’
Overview
Uses: Low hedges, mass plantings, foundation plantings, and mixed borders.
Benefits: A tidy, compact spirea with flat clusters of white flowers in late spring and dark blue-green leaves. The real show comes in fall, when the foliage turns brilliant shades of red, orange, and purple. Very cold hardy and low maintenance.
USDA Hardiness Zones: 4–8
Sun: Full Sun to Partial Shade
Life Cycle: Deciduous Shrub
Growth Habit: Mounding, Rounded — compact and tidy.
Bloom Color: White
Foliage Color: Blue-Green, turning Red, Orange, and Purple in fall
Mature Height: 2–3 feet
Mature Width: 2–3 feet
Bloom Season: Spring
Growth Rate: Moderate
Summary
A small spirea that saves its best for fall.
Tor birchleaf spirea is a neat, compact shrub that forms a dense mound about two to three feet tall and wide. In late spring it is covered in flat, lacy clusters of white flowers that sit on top of the foliage like a light dusting of snow, a clean, quiet show that pairs easily with almost anything.
Through summer, the rounded, birch-like leaves are a dark blue-green that makes a cool backdrop for bolder perennials. Then, in fall, the plant changes completely. The foliage turns shades of red, orange, gold and purple, often all on the same plant, and holds that color for weeks. Few shrubs this small give that much autumn interest.
Its tidy size and naturally rounded shape make it an easy fit for low hedges along a walk, the front of a foundation bed, or a mass planting on a slope. Deer tend to pass it by, which makes it a practical choice for yards where browsing is a constant problem.
Care
Tor Birchleaf Spirea Care
Plant in full sun to partial shade. Full sun gives the heaviest flowering and the most vivid fall color; in partial shade it still grows well, with softer autumn tones.
It grows in a wide range of well-drained soils, from sandy to clay loam, and is not fussy about pH. Avoid spots where water stands for long periods.
Water deeply once or twice a week through the first growing season while roots establish. Once settled, it handles normal dry spells, though a deep watering during extended drought keeps it looking full.
Fertilizer is rarely needed. If growth is weak, a single application of slow release fertilizer in early spring is enough.
Its compact shape means little pruning. If you want to tidy it, trim lightly right after flowering. Every few years, cut a few of the oldest stems to the ground in late winter to keep the plant dense and vigorous.
Size
What Size is the Tor Birchleaf Spirea for Sale Online?
Our Tor Birchleaf Spirea ships in a greenhouse-grade grow pot and is appropriately sized for its container at the time of shipment. Plants ship dormant or near dormant in the off-season, so they may arrive with few or no leaves. If you have specific sizing or planting questions, please contact us.
How Large Does Tor Birchleaf Spirea Grow?
Expect about 2 to 3 feet tall and 2 to 3 feet wide at maturity, in a dense, rounded mound. Space plants about 2 to 3 feet apart for a continuous low hedge or mass planting.
Additional Information
How is birchleaf spirea different from the more common Japanese spireas?
Japanese spireas are usually grown for pink flowers and colorful summer foliage. Tor is a birchleaf spirea, a different species with white flowers, rounded blue-green leaves, and much stronger fall color. It also has a neater, more compact habit, staying around two to three feet without regular shearing.
When is the fall color at its best?
Color usually starts in early to mid fall and builds over several weeks, moving through red, orange, gold and purple. Plants in full sun color the most intensely. A cool, sunny autumn brings the best display.
Is it deer resistant?
Yes, deer generally leave spireas alone, and Tor is no exception. No plant is completely deer proof when food is scarce, but it is a dependable choice for yards with regular deer traffic. See more in our Deer-Resistant Shrubs and Evergreens.
Does it attract pollinators?
Its flat white flower clusters are easy for butterflies and small bees to land on and work in late spring. For more compact flowering shrubs, browse our Shrubs & Bushes.
