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B and T World Seeds' reference number:
The average, annual, minimum temperature zone where Rhododendron maximum is cold hardy
USDA Zone:3 -40° to -30°F (-40° to -34.5°C)
|Type of plant - shrub to tree
Flower or inflorescence:
WHITE to PURPLE, YELLOW spots
oblanceo., 10-30cm. long, glossy dark GREEN
|Height, in meters: 3.5
Height, in feet: 11.55
|Rhododendron maximum sales history
| Parts of Rhododendron maximum are considered toxic.
Common names for Rhododendron maximum:
|Great Laurel, Great Rhododendron, Great-Laurel, Rose Bay, Rosebay,|
is included in the following
B and T World Seeds flowering plant categories.
|10||: Rhododendron and Azalea Species and Hybrid Seed List|
|40||: Shrub Seed List, Hardy and Tender|
|86||: Natives of U.S.North East|
|89||: Natives of U.S.South East|
|96||: Canadian Natives Eastern|
|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.|
|165||: Shady Condition Plant Seed List|
|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.|
|719||: North American Native Ethnobotanicals|
|Including medicinal, dye, fiber, food, construction, ritual|
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.
Rhododendron maximum seeds will usually germinate in 50-90 days, even under good conditions germination may be erratic.
Rhododendron maximum seeds will mostly germinate as the weather warms up in Spring, some may germinate during the Summer or Autumn but are more likely to stay dormant until the following Spring.
Keep shaded from direct sun.