Japanese Boenninghausenia
Boenninghausenia japonica
Not currently listed at our partner nurseries.
Essentials
At a Glance
Plant Type
Shrub
Height
24 inches
Width
18 inches
Light
Partial Sun
Zones
6, 7, 8, 9
Water
Low to moderate
Humidity
Average
Lifespan
Perennial
Native To
Japan
Toxicity
Non-toxic
The Story
Plant Bio
Boenninghausenia japonica is a delicate, herbaceous perennial with fern-like, aromatic, blue-green foliage and panicles of small, white, star-shaped flowers that bloom from mid-summer into fall. This species is valued for its fragrant foliage and its ability to attract pollinators, making it an attractive and functional addition to woodland and shrub borders.
Bloom Period:
Uses & Benefits:
Marketplace
Where to Buy
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Planting
How to Grow
- Tuck seeds or cuttings into well-draining soil in spring.
- Water regularly until established, about 6 weeks.
- Place in full sun for best flowering and aroma.
- Prune lightly after flowering to shape the shrub.
- Mulch around base to retain moisture and suppress weeds.
- Fertilize with a balanced, slow-release fertilizer in spring.
Pro Tip
Ensure good drainage to prevent root rot and promote healthy growth.
Keep It Thriving
Care Guide
Do
- Water during dry spells 🌱
- Prune after flowering for a tidy shape
- Mulch to conserve moisture
Don't
- Overwater, avoid soggy soil ❌
- Heavy fertilization that encourages leggy growth ❌
- Neglect pruning, which can lead to overgrown shape ❌
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Divide | ||||||||||||
| Mulch | ||||||||||||
| Prune |
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
Japanese Boenninghausenia questions
What zones can Japanese Boenninghausenia grow in?
Japanese Boenninghausenia is hardy in USDA Zones 6–9. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Japanese Boenninghausenia deer resistant?
Not reliably. Deer may browse Japanese Boenninghausenia, especially tender spring growth — plan on repellents or fencing where pressure is high.
When does Japanese Boenninghausenia bloom?
Japanese Boenninghausenia typically blooms in late summer through late fall. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Japanese Boenninghausenia need full sun?
Japanese Boenninghausenia does best in part shade.
Keep exploring
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Grow Japanese Boenninghausenia 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.
