$5.75–$24.50
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trefle.io · CC-BY-SA
Hypericaceae
Hypericum gramineum
Hypericum gramineum
Also known as Hypericum japonicum var. australe, Hypericum involutum, Brathys billardierei, Hypericum japonicum var. kainantense
Zones 5–9Sun Partial SunWater ModerateCare Low
Native Plants · St John'S Wort · Hypericum · Yellow Flowers · Medicinal Herb · Perennial · Groundcover · Asian Native · Partial Shade · Hypericaceae
Pet-safeBeginner-friendlyMedicinalAttracts pollinators
In stock at 1 nurseryStock updated 9/6/2026
Hypericum gramineum is a low-growing, grass-leaved St. John's Wort native to parts of Asia and the Pacific, producing cheerful yellow flowers over a long season. It performs best in partial shade with average, consistently moist garden soil. Minimal pruning is needed; simply cut back any untidy growth in early spring to encourage fresh foliage.
Growing conditions
The details behind the basics
- Daily light
- 4 hours
- Watering
- Water moderately, keeping soil moist but allowing the surface to dry slightly between waterings · Every 7-10 days
- Maintenance
- Low
- Soil
- loam
- Soil pH
- 6–7.5
- Temperature
- 0°F to 90°F
- Cycle
- Perennial
- Propagation
- Seed, Cutting
Hardiness
USDA 5a-9b
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Form & growth
Mature size and habit
- Mature height
- 2 ft – 5 ft
- Spread
- 3 ft
- Spacing
- 12 in apart
- Growth rate
- Moderate
- Root depth
- Medium
- Flowers
- No
- Foliage
- Medium
Ecology & origin
Where it belongs and what it brings
- Native to
- Assam, China South-Central, East Himalaya, Hainan, Hawaii, New Caledonia, New Guinea, New South Wales, New Zealand North, New Zealand South, Northern Territory, Queensland, South Australia, Taiwan, Tasmania, Victoria, Vietnam, Western Australia
- Attracts
- Bees, Butterflies
Sources: trefle, usda
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