The Story
Plant Bio
Corylopsis spicata, the spike winterhazel, is a deciduous shrub native to Japan that forms a wide, open silhouette of crooked branches and zig-zagging horizontal stems. In late winter and early spring, drooping two-inch racemes of fragrant, bell-shaped yellow flowers with purple anthers emerge on bare wood before the foliage unfolds.
The alternate, heart-shaped leaves emerge with a distinct bronze-purple tint in spring before maturing to a soft blue-green with a heavily crinkled texture. In fall, the foliage transitions to a modest yellow-green before dropping to reveal the architectural winter framework.
Uses & Benefits:
Essentials
At a Glance
Plant Type
Shrub
Height
96"
Width
120"
Light
Full Sun, Partial Sun
Zones
6, 7, 8
Water
Moderate
Humidity
Moderate
Lifespan
Multi-decade
Native To
Japan
Toxicity
Non-toxic
Bloom period
Late winter – Early spring
In flower about 2 months of the year
Planting
How to Grow
- Select a planting site with moist, organically rich, well-drained soil in full sun to partial shade, sheltered from strong winds.
- Dig a hole twice as wide as the root ball and of equal depth, backfilling with native soil amended with compost if necessary.
- Settle the plant into the hole, ensuring the soil line matches the nursery container level, and water thoroughly to settle the roots.
- Apply a three-inch layer of organic mulch around the base, keeping it clear of the main stems, to retain moisture and cool the roots.
Pro Tip
Prune immediately after flowering finishes by cutting back older stems to maintain shape; shearing or cutting heavily into old, leafless wood results in poor, patchy regrowth.
Keep It Thriving
Care Guide
Do
- Water regularly during dry summer spells to prevent leaf scorch.
- Plant in a location sheltered from harsh afternoon sun and cold winter winds.
- Apply an organic compost or slow-release acidifying fertilizer in early spring.
Don't
- Do not plant in heavy, poorly drained clay soils.
- Do not shear or prune heavily into old, leafless wood.
- Do not over-fertilize, as this damages the root system.
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Fertilize | ||||||||||||
| Mulch | ||||||||||||
| Pest Check | ||||||||||||
| Prune | ||||||||||||
| Winter Prep |
Watch Out For
Pests & Diseases
Common Pests
Common Diseases
In the Garden
Landscape Uses & Companions
Landscape Uses
Companion Plants
Multiply
Propagation Methods
Good to Know
Common Questions
Spike Winterhazel questions
What zones can Spike Winterhazel grow in?
Spike Winterhazel is hardy in USDA Zones 6–8. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Spike Winterhazel deer resistant?
Not reliably. Deer may browse Spike Winterhazel, especially tender spring growth — plan on repellents or fencing where pressure is high.
When does Spike Winterhazel bloom?
Spike Winterhazel typically blooms in late winter through early spring. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Spike Winterhazel need full sun?
Spike Winterhazel does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.
Keep exploring
Explore the genus
Hardy in your zone?
Grow Spike Winterhazel with confidence
See it in a design of your actual yard, get zone-matched care reminders, and track it season by season in your garden journal.