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B and T World Seeds' reference number:
The average, annual, minimum temperature zone where Iris tenax is cold hardy
USDA Zone:7 0° to 10°F (-17.5° to -12.5°C)
|Type of plant - perennial
Flower or inflorescence:
LAVENDER to PURPLE, or YELLOW
(soak overnight - stratify 2-3 weeks, germ. cool)
tough leaf fibres once used for rope - cord by Indians
|Height, in meters: 0.3
Height, in feet: 0.99
|Iris tenax seeds may be subject to seasonal availability
Common names for Iris tenax:
|Oregon Flag, Oregon Iris, Tough-leaf Iris,|
is included in the following
B and T World Seeds flowering plant categories.
|6||: Bulbous and Rhizomatous Plant Seed List|
|9||: Alpine and Rock Garden Seed List (Hardy and Tender)|
|43||: Herbaceous Border Plant Seed List|
|88||: Natives of U.S.North West|
|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.|
|183||: U.S. Middle West Native and Introduced Plants|
|720||: Fire Resistant Plants|
|Different classes of resistance: some grow back, some don't burn, a few have highly inflammable leaves that leave the rest of the plant intact, some trees don't have lower branches.|
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.
Iris tenax seeds will usually germinate in 30-545 days, even under good conditions germination may be erratic.
Iris tenax 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.
May take two winters outdoors.