Buttercup winter hazel (hyūgamizuki) Corylopsis pauciflora
Buttercup winter hazel (hyūgamizuki) (Corylopsis pauciflora) is a deciduous perennial shrub in the Hamamelidaceae family, native to Japan and Taiwan. It grows 1.2–2 m (3.9–6.6 ft) tall and 1.5–2.5 m (4.9–8.2 ft) wide, wants part sun to part shade and moderate water, and is hardy to about -23 °C (-9 °F). Space plants about 1.5 m (4.9 ft) apart.
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Buttercup winter hazel (hyūgamizuki) at a glance
| Type | Perennial shrub, deciduous |
|---|---|
| Family | Hamamelidaceae |
| Mature height | 1.2–2 m (3.9–6.6 ft) |
| Mature spread | 1.5–2.5 m (4.9–8.2 ft) |
| Spacing | 1.5 m (4.9 ft) centre to centre |
| Sun | Part sun to part shade, at least 3 h of direct sun a day |
| Water | Moderate; drought tolerance none, waterlogging tolerance none |
| Soil pH | 4.5–6.5 |
| Cold hardiness | About -23 °C (-9 °F) once established (roughly USDA zone 6) |
| Heat stress | Likely above about 30 °C (86 °F) |
| Flowering | from about March for 2–3 weeks (northern hemisphere; later in cold climates, earlier in warm ones) |
| Wind tolerance | Low |
| Pollinator value | Moderate |
| Edible | Not grown as food |
| Native to | Japan and Taiwan |
| Common in gardens of | 🇯🇵 Japan, 🇬🇧 United Kingdom, 🇺🇸 United States, 🇩🇪 Germany, 🇳🇱 Netherlands |
Is Buttercup winter hazel (hyūgamizuki) toxic?
- People: not known to be toxic
- Cats: not known to be toxic
- Dogs: not known to be toxic
No toxicity reported in standard references.
If a child or pet may have eaten part of a plant, call a poison centre or vet straight away.
Companion planting: what to grow with Buttercup winter hazel (hyūgamizuki)
No well-documented helpful pairing. Group it with plants that like part sun to part shade and moderate water.
Questions about Buttercup winter hazel (hyūgamizuki)
- How far apart should I plant Buttercup winter hazel (hyūgamizuki)?
- About 1.5 m (4.9 ft) apart, centre to centre. A mature plant spreads 1.5–2.5 m (4.9–8.2 ft).
- Does Buttercup winter hazel (hyūgamizuki) need full sun?
- Part sun to part shade: at least 3 hours of direct sun a day.
- How much water does Buttercup winter hazel (hyūgamizuki) need?
- Moderate water. Drought tolerance is none and waterlogging tolerance none.
- How cold-hardy is Buttercup winter hazel (hyūgamizuki)?
- It tolerates about -23 °C (-9 °F) once established, roughly USDA zone 6.
- When does Buttercup winter hazel (hyūgamizuki) flower?
- From about March for 2–3 weeks (northern hemisphere; later in cold climates, earlier in warm ones).
- Is Buttercup winter hazel (hyūgamizuki) poisonous to cats and dogs?
- For cats it is not known to be toxic; for dogs not known to be toxic; for people not known to be toxic. No toxicity reported in standard references.
- What grows well with Buttercup winter hazel (hyūgamizuki)?
- There is no well-documented companion pairing for Buttercup winter hazel (hyūgamizuki). Group it with plants that like the same sun (part sun to part shade) and water (moderate).
Sources and evidence
Evidence grade B (B: extension service or peer-reviewed).
- RHS Plant Finder, Royal Horticultural Society
- Missouri Botanical Garden Plant Finder, Missouri Botanical Garden
- Plants of the World Online (taxonomy, native range), Royal Botanic Gardens, Kew
Notes and assumptions
- Short dangling clusters of primrose-yellow, cowslip-scented bells on bare twigs in early spring; wants acid, humus-rich soil in light shade.
Reference values for planning, not horticultural, veterinary or medical advice. Varieties, soils and local climates differ: check with a local nursery or extension service.
Related plants
- Chinese fringe flower Loropetalum chinense
- Hybrid witch hazel Hamamelis x intermedia
- Persian ironwood Parrotia persica
- Chinese witch hazel Hamamelis mollis
- American witch hazel (common witch hazel) Hamamelis virginiana
- Bigleaf hydrangea Hydrangea macrophylla
- Rhododendron Rhododendron
- Boxwood Buxus sempervirens