Iris prismatica at B & T World Seeds

Iris prismatica

Elements of Structural and Systematic Botany

B and T World Seeds' Botanical Glossary

B and T World Seeds' reference number: 74175

Type of plant - perennial

Flower or inflorescence: deep BLUE-PURPLE

Fruit: (vernalise or stratify 4 months)

Foliage: grass-like

Height, in meters: 0.8
Height, in feet: 2.64

Iris prismatica sales history

Common names for Iris prismatica:

Bearded Iris, Slender Blue Flag, Slender Blue Flag Iris, Slender Blue Iris,

Iris prismatica is included in the following
B and T World Seeds flowering plant categories.

1	: Stock list
	Our stock changes almost every day, with seeds arriving and being shipped all over the world. We only stock long lived seeds, except for a few species that are always in demand. Seeds that are not in stock are acquired fresh when ordered.
6	: Bulbous and Rhizomatous Plant Seed List
43	: Herbaceous Border Plant Seed List
86	: Natives of U.S.North East
89	: Natives of U.S.South East
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.
443	: Iridaceae
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.

Happier and Healthier Plants, Naturally

plant-fungus communities, for improved nutrition, and disease and drought resistance.

Germination guide for Iris prismatica

These notes are a general guide, it is recommended to check specialist literature for some of the more unusual seeds in our lists.
Seed Germination Theory and Practice by Professor Norman C. Deno

Some knowledge about growing from seed is necessary to germinate even the easiest seeds. Most seeds require humidity to germinate, even desert plants like Welwitschia mirabilis 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.
Some seeds need to be in the light (surface sown) or in the dark (sown deep enough to receive little or no light) to germinate. A rule of thumb is to cover the seeds their own width deep in the growing medium, but some seeds prefer to be sown much deeper, and some fairly large seeds like to be surface sown (or higher).
Many seeds germinate best at certain temperatures, some will germinate at a comparatively wide range of temperatures, yet others need fluctuating temperatures.
Almost all seeds are waiting in a dormant state for some outside stimulus to break their dormancy, some just need sufficiently high ambiant humidity, others need scarification, vernalization or to be passed through the intestines of an animal.

Iris prismatica seeds will usually germinate in 30-545 days, even under good conditions germination may be erratic.
Sow Iris prismatica seeds about 6mm deep in a Peaty seed sowing mix at about 15-20°C.

Iris prismatica 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.

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