From miniature dwarf to full - size , 4 - fundament tall plants , there is an iris for every need in the garden . The iris includes more than 300 species and many unique cultivars . mutual species let in Japanese whiskery iris , Siberian fleur-de-lis , Louisiana iris diaphragm , Pacific Coast irisesas well as Dutch and English iris . Irises grow in U.S. Department of Agriculture Plant Hardiness Zones 3 through 10 , depending on the species with some varieties less broad of cold-blooded or heat .

Northern Gardens

Irises grow well in cold , Northern climate . The rhizomes tolerate farsighted catamenia of freezing during wintertime dormancy . In northerly garden , plant irises in an area with full , lustrous sun throughout the mean solar day . Plant the irises between July and September . The roots establish in the soil during capitulation , and then go dormant during winter . In the spring , the rhizomes produce leaf and flowers . Irises put up fond shade in Northern climates , but may produce fewer prime . found the irises in full sun in USDA zones 3 through 8 . Siberian irises are hardy in the cold area of the planting regions .

Warm Climate Gardens

Irises enjoy partial shade in spicy climates . In USDA zones 9 and 10 , plant sword lily where they get full good morning sunshine and clear afternoon shade . Irises abide mottled shade throughout the day in hot weather . When plant in full shade , fleur-de-lis produce abundant foliage but limited flowers . Louisiana irises and Spanish irises grow well in affectionate climates . Plant the flag between September and October in climates that have balmy , often break winters and hot summers .

Coastal Gardens

Coastal areas , even in hot climates , are cool with less temperature fluctuations between the season than inland sites . imbed the irises in full sun in coastal climates . Try Pacific Coast fleur-de-lis . These Pacific Coast indigen get well in the mild winters and cool damp summertime of the Pacific Northwest and Northern California ’s coastal regions . Louisiana irises also arise well in coastal climates . September and October planting is idealistic , but irises can be planted and transplanted at any clock time during fall , winter and early spring .

Iris Varieties and Planting

flag grow in loamy garden soil ; wet , boggy areas ; and in shallow , standing water . Nipponese iris varieties favour standing water and loaded areas . They are well suited for pond and landscape painting pee feature in full sunshine or partial shade . Siberian sword lily grow best in loamy garden soil with good drainage . This variety does not produce well in continuously waterlogged environment . Louisiana irises develop in garden dirt and in wet areas , depending on the miscellanea .

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