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.
Quick Facts
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 |