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Iris sibirica hybrids, commonly named, Siberian Iris are
species from central Europe and Russia. They grow up to 4
feet tall but most are around 2 feet tall. Iris sibirica
multiplies rapidly and is one of the easiest of all
perennials to grow.
The flowers are consisting of 3 sepals and 3 petals.
There are dozens of cultivars, in a varied range of
splendid blue-purple, lavender, or white flowers,
including some of the most striking and elegant of all
iris. As long as their moisture requirements are met,
they will bloom in a wide range of conditions. They are
tough, reliable plants and generally free of pests and
diseases. They bloom profusely for two or three weeks in
May. A single clump of Siberian Iris will produce 12-20
flowers once established.
Foliage is narrow and sword-like with a slightly arching
habit of growth. It stays bright green and remains
attractive all Summer. They are deciduous in Winter and
need to be cut back once a year in Winter after the
foliage has turned brown. The plant spreads by means of
its modified stems, rhizomes, which are located below the
soil surface.
Hardiness zones 3-9, (-37°C/-35°F, -5°C/25°F) in
Winter. Siberian Iris likes full sun or very light shade,
especially in hot areas. It likes rich, acid soil with
regular watering. Requires consistently moist soil; do
not let dry out between waterings. It will tolerate less
than ideal conditions, and is surprisingly drought
tolerant.
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