Crocosmia
( kroh - KOZ - mee - uh )
At-A-Glance InformationNative to tropical and southern Africa, this genus of flowering perennials grow from corms and are related to Freesia, Ixia, and Sparaxis. These tropical beauties, commonly called Montbretia, need some shade in the hottest climates, and require regular waterings during their growth and blooming periods. The bright orange, red and yellow summer-blooming flowers attract birds and appear on branched stems.
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Crocosmia Species and Varietals
The genus Crocosmia includes 8 species (and a few notable hybrids) and is a member of the plant family Iridaceae. The name of the genus is derived from the Greek words 'krokos' (meaning saffron) and 'osme' (meaning odor), referring to the saffron-like smell of the dried leaves when they are immersed in hot water. The best growing zones for Crocosmia vary depending on the species. For more information, see the species descriptions below. To find your zone, click here: Zone Map.
Crocosmia x crocosmiiflora (Tritonia crocosmiiflora) (Montbretia) These grow best in zones 5-24, H1 and H2. The plants produce deep orange flowers on 3-4 foot tall stems. Varieties of the species come with flowers in yellow, orange, cream and scarlet. If left to its devices, it will establish itself and form colonies. This hybrid is a cross between species Crocosmia aurea and Crocosmia pottsii. |
Crocosmia Hybrids
These grow in zones 4-24. Varieties are outlined below.
These grow in zones 4-24. Varieties are outlined below.
Crocosmia paniculata (Aunt Eliza) These natives of South Africa, Eswatini, and Lesotho reach between 4 and 5 feet tall when in bloom, and produce lanceolate green leaves and deep orange to orange-brown flowers. These are popular garden ornamentals, but have the tendency to escape gardens and grow as wild weeds. |
Caring for Crocosmia
These plants need well-draining enriched soil. Set out corms 3 inches apart, and 2 inches deep. They will need to be mulched in wintertime where winter lows range from 10 degrees to -5 degrees Fahrenheit. In areas colder than that, dig up corms and store inside over the winter months. Clumps should only be divided after flower quality and vigor begin to decline.
Propagation
Problems and Pests
Gallery
Videos
A video all about growing camellias successfully
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Propagating camellias
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Resources
The New Sunset Western Garden Book: The Ultimate Gardening Guide (2012) - Page 271, Crocosmia
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