IRIS SETOSA ALBA
From May until early July, this stunning dwarf option to the taller irises produces disproportionately wide and large, ivory-white flowers which each have a contrasting inner halo. Flowers are held on sturdy stems above solid clumps of narrow, green sword-like leaves. Very cold tolerant, this short, grassy-leaved Iris species, native to Siberia and Alaska, is a perfect choice for edging, or in the sunny rock garden. It is also effective when mass planted as ground cover, when it will grow in sun or semi-shade, preferably in a moisture retentive position.
Seeds can be sown at any time but are best sown in winter or early spring to benefit from a cold spell in the wet compost to break their dormancy. We advise covering seeds very thinly with sand or fine grit to about the depth of the seed size. If the seeds do not come up within 6 to 12 weeks the damp seed tray can be given cold treatment in a fridge for about four weeks. They may still take very many months to appear, so please never discard the pot or tray.