B and T World Seeds' reference number:
The average, annual, minimum temperature zone where Hypericum Rowallane is cold hardy
USDA Zone:8 10° to 20°F (-12° to -6.5°C)
|Type of plant - shrub
Flower or inflorescence:
|Hypericum Rowallane sales history
| Parts of Hypericum Rowallane are considered toxic.
is included in the following
B and T World Seeds flowering plant categories.
|40||: Shrub Seed List, Hardy and Tender|
|131||: Toxic Plants|
|Some of the deadliest known poisons are found in plants. Some major food plants, eaten by millions of people every day, have toxic parts.|
|190||: Trees and Shrubs For Mediterranean Climates|
Some knowledge about growing from seed is necessary to germinate even the easiest seeds.
Most seeds require humidity to germinate, even desert plants like
require that their growing medium remains moist until germination.|
Most seeds require oxygen to germinate, if buried too deep in their growing medium, or if the medium is too wet,
the seeds may not get the oxygen they require.
Hypericum Rowallane seeds will usually germinate in 30-90 days, even under good conditions germination may be erratic.