B and T World Seeds' reference number:
The average, annual, minimum temperature zone where Spiraea douglasii ssp menziesii is cold hardy
USDA Zone:5 -20° to -10°F (-29° to -23.5°C)
|Type of plant - deciduous shrub
Flower or inflorescence:
deep PINK in erect conical pan.-15c
|Height, in meters: 1
Height, in feet: 3.30
|Spiraea douglasii ssp menziesii sales history
Spiraea douglasii ssp menziesii
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|
|72||: Russian Native and Introduced Plants (Central)|
|94||: Natives of Rocky Mountain Area U.S.A.|
|120||: Alaskan Native Plant Seed List|
|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.|
|185||: Plant Species whose germination is improved by Smoke|
|"Smoke" contains a butenolide compound produced by certain plants when heated, it speeds up or starts the germination of seeds from many different genera.|
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.
Spiraea douglasii ssp menziesii seeds will usually germinate in 30-40 days.