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Irises can generally be propagated by division, [49] or by seed growing. [47] Every three years, the clumps of irises are normally divided, as the plants are highly likely to get bacterial rot if they suffer any moisture or humidity. They are best re-planted in late September when temperatures are low and humidity is also low.
Related: Martha's Top Tips for Planting Daffodil Bulbs. Dwarf Iris. Katrin Ray Shumakov / Getty Images. Dwarf iris (Iris reticulata) appear in late winter and early spring. “Not only are they ...
Iris suaveolens is a plant species in the genus Iris, it is also in the subgenus Iris. It is a rhizomatous perennial , from Eastern Europe, ranging from the Balkans to Turkey (in Asia Minor ). It has short, sickle shaped or curved, blue-green or greyish green leaves, a slender simple stem, with 1 or 2 fragrant spring blooming, flowers, between ...
Plants require dividing every 3–4 years to promote good flowering. They can combine with other plants but tend to 'move' to suitable positions. [14] [15] [32] The iris seed is not hard to raise but a very slow process. [33] It can take many months to germinate (between 3–12 months) with a 50% germination average. [14]
Dykes had thought that Iris junonia, Iris trojana, Iris cypriana and Iris mesopotamica (other tall purple flower bearded irises), could be used in breeding programmes, to create plants with tall stems and large flowers. [30] It can be crossed with other iris species (such as Iris pumila and Regelia section irises), to produce fertile offspring ...
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So it is best grown like other species of iris in an alpine house or bulb frame. It is hardy to USDA Zone 3. [6] Like other members of the reticulata group (including Iris danfordiae), it has the habit of the main bulb splitting into many bulblets, that can take many years (between 2–3 years) to reach flowering size again. [7]
Iris pallida subsp. illyrica, synonym Iris pseudopallida, [1] (the southern Adriatic iris) is a subspecies of Iris pallida.It is a rhizomatous perennial from Croatia.It has flat, curved of sickle-shaped leaves, tall slender stems, 3–8 fragrant flowers, in shades of violet, or pale violet flowers, mauve, lavender, purple, yellow or white, between May and June.