Comanthosphace japonica, the Japanese shrub mint, is an aromatic perennial shrub native to Japan, admired for its white flowers and minty fragrance.
At-a-glance light, water, soil, and growing conditions from plant data
Full sun to partial shade
50% intensity
Prefers bright, indirect light; can tolerate some direct morning sun.
Regular watering
50% intensity
Keep soil consistently moist during the growing season; reduce in winter.
Well-drained, fertile loam
50% intensity
Average room temperatures
50% intensity
Thrives in temperatures between 18-24°C during the day and cooler at night; tolerates mild frost.
Outdoor
50% intensity
Moderate feeding
50% intensity
Feed every 4-6 weeks during the growing season with a balanced liquid fertilizer.
Safety information from plant toxicity data
| Attribute | Value |
|---|---|
| Toxic for humans | No 0/5 intensity |
| Toxic for pets | No 0/5 intensity |
Key traits and growing stats from plant data
Watering, pruning, propagation, and repotting details from plant data
Water regularly during the growing season, keeping the soil consistently moist but not waterlogged. Reduce watering in autumn and winter, allowing the top layer of soil to dry out slightly between waterings.
Good drainage is essential to prevent root rot.
Prune in late winter or early spring before new growth begins to shape the plant and remove any dead or damaged branches. Light pruning after flowering can encourage a bushier habit and a second bloom.
Propagate from semi-hardwood cuttings taken in mid-summer. Insert the cuttings into moist, well-draining potting mix. Rooting typically occurs within 4-6 weeks in a warm environment with high humidity.
Repot young plants annually in spring. Mature plants can be repotted every 2-3 years or when they become root-bound. Use a well-draining potting mix and a slightly larger pot to accommodate root growth.
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Monthly activity intensity for bloom and fruit across both hemispheres.
Flowering & fruiting calendar
Flowering & fruiting calendar
Photos of Japanese Shrub Mint (Comanthosphace japonica)
Common names and botanical synonyms
Botanical classification
| Rank | Name |
|---|---|
| Kingdom | Plantae |
| Division | Tracheophyta |
| Class | Magnoliopsida |
| Order | Lamiales |
| Family | Lamiaceae |
| Genus | Comanthosphace |
| Species | Comanthosphace japonica |
Similar in genus Comanthosphace
Answers based on plant encyclopedia data
