Iris seed can germinate in two weeks when sown immediately after harvesting but can take up to two years if the seed is older and very dry as a natural germination inhibitor kicks in soon after the seed dries.
How to plant japanese roof iris.
In a shady area combines well with foam flower tiarella fringed bleeding heart and brunnera.
Iris tectorum alba with carex evergold the days are becoming warmer and the white japanese roof iris are beginning to bloom.
A charming iris it spreads slowly in part sun and the fresh green iris fans are lovely as a counterpoint to other plant forms in the garden.
They like moist well drained soil that is more on the acidic side.
Japanese iris require a minimum of 6 hours of full sun each day.
Japanese roof iris a plant with a history.
Water should be acidic.
With purple white pink and blue flowering roof iris cultivars for sale online.
The second method which i use for imported seed is to plant each seed in its own peat jiffy pot once again in shallow trays to hold water.
Like all irises it should be planted with the rhizomes just at the surface of the soil.
They grow well in range of conditions however are not really suited to hot humid climates.
They are often planted on stream banks their natural habitat where the soil remains constantly moist.
The japanese roof iris is unique amongst irises because it grows about as well in the shade as in the sun.
If you re unsure of the ph of your water add 2 to 3 teaspoons of vinegar to a gallon of water to obtain the level needed for successful care of japanese iris.
Plant in drifts at the front of the border or in rock gardens with similar plants.
This species is a welcome addition to a shade garden.
In warmer climates shade in the afternoon is preferred to keep them from drying out.