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?Arnold Promise? is an upright, vase-shaped cultivar with ascending branches and a spreading habit. It is noted for its sweetly fragrant flowers and later bloom than most of the other x intemedia cultivars. Axillary clusters of bright yellow flowers (to 1? long), each with four narrow, ribbon-like, crinkled petals and a reddish-green calyx cup, bloom along the stems in February to March. Broad-oval, green leaves (to 6? long). Yellow-orange to yellow fall color can be quite attractive.
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Easily grown in average, medium, well-drained soils in full sun to part shade. Best flowering in full sun. Prefers moist, acidic, organically rich soils. Promptly remove root suckers to prevent colonial spread. Prune in spring after flowering to control shape and size.
| Common Name | 'Arnold's Promise', Witch Hazel |
|---|---|
| Botanical Name | Hamamelis x intermedia 'Arnold's Promise' |
| Container/Amount | 7 gallon |
| Evergreen or Deciduous | Deciduous |
| Hardiness Zone | 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b |
| Growth Rate | Average |
| Light Requirements | Part-shade, Part-sun, Sun |
| Height | 15 ft. |
| Width | 15 ft. |
| Soil Condition | Well-drained |
| Water Needs | Average |
| Blooming Period | late winter to early spring |
| Flower Color | yellow |
| Fragrance | Yes |
| Foliage Color | green |
| Deer Resistant | Yes |
| Fall Color | yellow/orange |
