Common St. John's-wort (seeds)
|For 1 g : 3.5 €||25|
|For 5 g : 14 €||0|
|For 10 g : 25 €||0|
|For 20 g : 42 €||0|
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Family : Hypericaceae
Latin name : Hypericum perforatum L
Common name : Common St. John's-wort
- Family : Hypericaceae
- Genus : Hypericum
- Specy : perforatum
- Author name : L.
- Type of plant : perennial
- Height in flowers : from 20 to 50 cm, from 50 to 100 cm
- Hardiness (USDA zones) : 4a (from -34,4°C to -31,7°C), 4b (from -31,7°C to -28,9°C), 5a (from -28,9°C to -26,1°C), 5b (from -26,1°C to -23,3°C), 6a (from -23,3°C to -20,6°C), 6b (from -20,6°C to -17,8°C), 7a (from -17,8°C to -15°C), 7b (from -15°C to -12,2°C), 8a (from -12,2°C to -9,4°C), 8b (from -9,4°C to -6,7°C)
- Environment : moist, drained, dry
- Sun exposure : partial shade, full sun
- Bloom color : yellow
- Bloom time : june, july, august, september
- Difficulty : easy
- Number of seeds per gram : 10000
- Grams per 1000 seeds : 0.1