Iris sibirica is virtually carefree and
is an ideal plant for beginning gardeners. In addition to
the elegant flowers, the plant produces seedpods that can
be dried for arrangements.
ABOUT IRIS SIBIRICA: The graceful foliage is sword-shaped
and grows 2 to 3 feet tall, though there are smaller and
larger varieties. At the end of May and early June, the
flowers emerge on tall stalks that rise above the foliage
and appear to be floating above the leaves. Flower size
and color depend on the variety, though many are blue or
purple. One of my favorites is 'Caesar's Brother,' a vigorous
purple variety. Iris sibirica spreads by rhizomes and will
quickly form clumps that crowd out weeds.
WHAT IT LIKES: Iris sibirica tolerates a range of growing
conditions. Full sun is ideal for the most abundant bloom.They
favor a moist, slightly acidic soil with good drainage.
Old foliage should be removed in early spring.
TRICKS OF THE TRADE: When planting, keep the roots moist
and make sure the hole is deep enough to accommodate their
long roots. Keep newly planted rhizomes mulched to assure
enough moisture. Established plants will appreciate a spring
application of compost around the base of the plant. Remove
grasses (such as crabgrass). I prefer to divide plants in
early spring, before leaves are 3 inches tall, every four
or five years.
BEST BUDS: I like Iris sibirica with peonies, as the contrast
in flower and texture is so strong. Oriental poppies provide
an interesting contrast, as well, and the iris foliage will
help hide the fading poppy leaves. Horizontal junipers,
such as Juniperus horizontalis 'Andorra Compacta' or sabina
'Broadmoor' set off the vertical strength of the iris while
reinforcing the blue hue in the leaves. I like daylilies
as companions, as they have a similar leaf appearance, but
flower at staggered times. I also have them planted with
'Autumn Joy' sedum.
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