B and T World Seeds' reference number:
The average, annual, minimum temperature zone where Hypericum kalmianum is cold hardy
USDA Zone:2 -50° to -40°F (-45.5° to -40°C)
|Type of plant - shrub
Flower or inflorescence:
1.5-4.5cm., narr., obl.-oblanceo.
|Height, in meters: 0.6
Height, in feet: 1.98
|Hypericum kalmianum sales history
| Parts of Hypericum kalmianum are considered toxic.
Common names for Hypericum kalmianum:
|Kalm's St. John's Wort,|
is included in the following
B and T World Seeds flowering plant categories.
|40||: Shrub Seed List, Hardy and Tender|
|43||: Herbaceous Border Plant Seed List|
|87||: Natives of Central U.S.A.|
|95||: Canadian Natives Central Area|
|169||: Sandy Soil Plant Seed List|
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 kalmianum seeds will usually germinate in 30-90 days, even under good conditions germination may be erratic.