Virginia sweetspire
Itea virginica. Family Iteaceae. Shrub.
Also called Virginia willow, Sweetspire.
Virginia sweetspire is a deciduous shrub native to the eastern United States, grown for its arching stems, fragrant white flower spikes and red to burgundy autumn foliage. It spreads by suckers into a loose colony and is useful in damp borders, rain gardens and woodland edges.
At a glance
- Sun
- Full sun to partial shade; tolerates deeper shade but flowers less and develops weaker autumn colour.
- Water
- Prefers consistently moist soil; tolerates periodic flooding and some drought once established.
- Soil
- Moist, humus-rich soil, preferably acidic to neutral; tolerates clay and imperfect drainage.
- Height
- 3-6 ft (0.9-1.8 m)
- Spread
- 4-6 ft (1.2-1.8 m), eventually wider through suckering
- Flowers
- Late spring to early summer; fragrant white flowers in slender, arching or drooping spikes.
- Foliage
- Oval, finely toothed green leaves turn red, purple and burgundy in autumn, often remaining on the stems well into late autumn.
- Growth
- Moderate
- Care needed
- Low
Care
- Water deeply during dry spells in the first two growing seasons.
- Keep the root zone moist for best growth, especially in sunny positions.
- Apply 2-3 in (5-8 cm) of organic mulch, keeping it clear of the stems.
- Top-dress with compost in spring; routine fertiliser is usually unnecessary.
- Remove unwanted rooted suckers if you need to keep the shrub within a border.
Pruning. Prune immediately after flowering because flowers form on the previous year's growth. Remove damaged stems and, when needed, cut a few of the oldest stems to ground level rather than shearing the whole shrub.
Through the year
- Early spring
- Plant when the ground is workable, then water thoroughly and mulch.
- Spring
- Top-dress with compost and remove unwanted suckers.
- Early summer
- After flowering, thin crowded old stems if necessary.
- Summer
- Check soil moisture during dry weather and water young plants deeply.
- Autumn
- Plant or transplant while the soil is moist and before it freezes.
- Late autumn
- Renew mulch where needed, leaving the bases of the stems uncovered.
In the garden
- Mass along a rain-garden margin where occasional flooding gives way to moist soil.
- Plant at a woodland edge with ferns for a soft transition between trees and lawn.
- Use as an informal low hedge, allowing room for arching stems and suckers.
- Combine with red-twig dogwood and other moisture-loving shrubs for autumn colour and winter stems.
Garden styles it suits: Woodland, Wildlife garden, Pollinator garden, Low-maintenance, Autumn colour and English country.
Plant it with: Cinnamon fern, Royal fern, Summersweet, Red-twig dogwood, Cardinal flower and Woodland phlox.
Wildlife: The flowers provide nectar and pollen for bees and other insects. Dense colonies offer shelter for small wildlife.
Problems to watch for
- Leaf scorch or wilting in dry soil: water deeply and mulch; avoid exposed, dry planting sites.
- Yellow leaves with green veins in strongly alkaline soil: check soil pH and move to a more suitable site if necessary.
- Few flowers: provide more light and avoid winter or early-spring pruning, which removes flower buds.
- Unwanted spread by suckers: cut or dig out rooted shoots beyond the intended planting area.
Safety
Not known to be toxic to cats, dogs, horses or people. No plant parts are established as poisonous, but it is not an edible plant and ingestion may cause digestive upset.
Easily confused with
Summersweet (Clethra alnifolia)
Summersweet generally flowers later in summer and holds its flower spikes more upright; its leaves usually turn yellow rather than burgundy in autumn.
Holly-leaved sweetspire (Itea ilicifolia)
It has evergreen, leathery leaves with conspicuous holly-like teeth and much longer hanging flower clusters; Virginia sweetspire has deciduous, finely toothed leaves.
The name
Itea comes from the Greek name for willow, referring to the willow-like foliage, while virginica means 'of Virginia'.
Propagation. Separate rooted suckers while dormant, or take softwood cuttings in late spring to early summer. Plants raised from seed may differ from named cultivars.
Checked against open data
- Accepted botanical name
- Itea virginica
- In the US and Canada
- Native in the lower 48 states.
- Native range
- Alabama, Arkansas, Delaware, District of Columbia, Florida, Georgia, Illinois, Indiana, Kentucky, Louisiana, Maryland and Mississippi.
- Measured
- Soil pH 4 to 7.5. Average height 300 cm.
Sources: GBIF (CC BY 4.0), USDA PLANTS and Trefle (CC BY 4.0). The care and design notes are LandscapeGPT's own.
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