Japanese Yellow Sage
Salvia koyamae
Essentials
At a Glance
Plant Type
Perennial
Height
24 inches
Width
30 inches
Light
Partial Sun, Shade
Zones
5, 6, 7, 8, 9
Water
Moderate
Humidity
Average
Lifespan
Perennial
Native To
Japan
Toxicity
Non-toxic to humans and pets
The Story
Plant Bio
Salvia koyamae is a shade-loving perennial known for its large, textured, heart-shaped leaves and spikes of pale yellow flowers in late summer and fall. This species is a rare Japanese woodland sage, valued for its bold foliage and late-season blooms in shady garden areas. It spreads by runners to form an attractive groundcover.
Uses & Benefits:
Marketplace
Where to Buy
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Planting
How to Grow
- Tuck seeds into well-draining soil in early spring for best germination.
- Mist cuttings regularly to maintain humidity and root within 6 weeks.
- Transplant young plants outdoors after the last frost date.
- Water deeply once a week during dry spells, especially in summer.
- Prune after flowering to encourage bushy growth and more blooms.
- Apply a balanced fertilizer in early spring for vigorous growth.
Pro Tip
Ensure good air circulation to prevent fungal diseases and promote healthy growth.
Keep It Thriving
Care Guide
Do
- Water consistently, especially during dry periods 💧
- Prune lightly after flowering to shape the plant
- Use well-draining soil to prevent root rot
- Provide full sun for optimal flowering
Don't
- Avoid overwatering to prevent fungal issues ❌
- Don't fertilize late in the season to avoid weak growth
- Refrain from heavy pruning during winter
- Never place in dense shade for best blooms
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Divide | ||||||||||||
| Fertilize | ||||||||||||
| Mulch | ||||||||||||
| Plant | ||||||||||||
| Spring Cleanup |
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 Yellow Sage questions
What zones can Japanese Yellow Sage grow in?
Japanese Yellow Sage is hardy in USDA Zones 5–9. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Japanese Yellow Sage deer resistant?
Not reliably. Deer may browse Japanese Yellow Sage, especially tender spring growth — plan on repellents or fencing where pressure is high.
When does Japanese Yellow Sage bloom?
Japanese Yellow Sage typically blooms in late summer to fall through early summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Japanese Yellow Sage need full sun?
Japanese Yellow Sage does best in part shade.
More Salvia to compare
May Night Sage
Salvia nemorosa 'May Night'
Celestial Blue Sage Wood Sage
Salvia nemorosa 'Celestial Blue'
Marcus Woodland Sage
Salvia nemorosa 'Marcus'
White Profusion Salvia
Salvia x hybrida 'White Profusion'
Lyrical Blues Salvia
Salvia x hybrida 'Lyrical Blues'
Rose Marvel Sage
Salvia nemerosa 'Rose Marvel'
Keep exploring
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Hardy in your zone?
Grow Japanese Yellow Sage 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.
