Sweetspire

Itea virginica

Iteaceae, formerly Grossulariaceae · broadleaf deciduous shrub · introduced

Last updated

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.

Plant Profile

Size & Form

Height
3–5 ft
Spread
3-6 ft
Growth Rate
Slow
Size at 20 yr
10 ft
Lifespan
Short-lived

Site Requirements

Light
Part Shade
Soil Drainage
Wet Tolerant
Soil pH
4.0-7.5
Water
High
Drought Tolerance
Low
Hardiness
Zones 5a–8b

Ornamental Interest

Bloom Time
June to July
Fall Color
Crimson, orange, purple, red, yellow
Origin
from New Jersey to Florida, west to Missouri

Phenological Calendar

View full calendar (8 stages)
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'
Data Maturity
Structured Multiple sources. Expert review underway.