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Iris hartwegii, the Sierra Iris, is native to the Sierra
Nevada range, from 2000-6000 feet high. This Iris grows
up to a foot tall from a creeping rootstock.
The flowers are consisting of 3 sepals and 3 petals. The
Sierra Iris is a creamy, butter-yellow color with darker
yellow along the center of the petals and on the inner
portion of the petals. The flower stem in slender, from 6
inches to 1 foot tall and bears 1-2 flowers. It spreads
slowly through underground rhizomes forming an attractive
green clump of shiny green leaves. This variable species
usually has narrow, pale-green, deciduous leaves.
Hardiness zones 7-10, (-15°C/5°F, 1°C/35°F) in Winter.
Sierra Iris goes deciduous during the Winter. It grows
best in higher elevation gardens, where it can go dormant
in the colder Winters and grow through cooler Summers. It
can be found growing in moist meadow areas. Iris
hartwegii tolerates full shade.
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