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Sweetspire

Itea virginica

Iteaceae, formerly Grossulariaceae · broadleaf deciduous shrub · introduced

Last updated

Data Coverage 3 of 6 dimensions
Site Data
Threats
Cultivars
Phenology
GDD Thresholds
Puget Sound

Itea virginica (Iteaceae) is a deciduous to semi-evergreen shrub native to the southeastern United States from New Jersey to Florida and west to Missouri, Louisiana, and east Texas. It grows 3 to 5 feet tall (potentially 10 feet at maturity), forming an erect habit with arching branches and a stoloniferous root system that produces colonies over time. In summer, fragrant white flowers appear in cylindrical drooping racemes (6 to 15 cm long) at branch ends. Fall color ranges through crimson, orange, purple, red, and yellow.

Virginia sweetspire is most floriferous and colorful in partial shade to full sun, though it tolerates deep shade. It prefers moist, fertile, acidic soils but handles both wet and dry conditions. Two widely grown cultivars are 'Henry's Garnet' (4 to 6 feet, with outstanding purplish-red fall color) and 'Little Henry' (2 to 4 feet, compact). The species blooms on previous season's wood, so pruning should follow flowering. No significant pest or disease problems are documented. Hardy in Zones 5a to 8b.

Quick Facts

Height
3–5 ft
Growth Rate
Slow
Light
Part Shade
Soil
Wet Tolerant
Water
High
Hardiness
Zone Zones 5a–8b
Bloom Time
June to July
Fall Color
Crimson, orange, purple, red, yellow
Origin
from New Jersey to Florida, west to Missouri

Phenological Calendar

Stage Typical Window
Bud break BBCH 07 Feb 15-Mar 15
Leaf emergence BBCH 11 Mar 1-Apr 1
Bloom start BBCH 61 Apr 1-Apr 30
Bloom end / petal fall BBCH 69 Apr 15-May 15
Fruit/seed development BBCH 71 Jun 1-Aug 31
Fruit/seed maturity BBCH 85 Sep 1-Nov 30
Leaf drop BBCH 93 Oct 15-Nov 30
Dormancy BBCH 97 Nov 15-Feb 28

Cultivars (4)

'Henrys Garnet'
Common name: Henry's Garnet Sweetspire
Hardy to USDA Zone 5
'Little Henry'
Common name: Little Henry Sweetspire; Mature height: 2–4 ft
Hardy to USDA Zone 5
'SMNIVDFC'
'Henry'