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One of the great aspects of this plant is that it can be forced to bloom out-of-season in greenhouse-like environments. However, you can also find cultivars displaying other hues like: When planted in the fall, Dutch iris produce blooms the following spring, the exact timing of which depends on temperatures and the cultivar used.Ĭultivars most often bloom at some point between Mother’s Day and Memorial Day, with individual flowers lasting 3 to 5 days and the overall show lasting about 2 weeks.īlooms are 3” to 4” inches across, are usually multi-colored, and have a gentle fragrance. Flowering And FragranceĪmong the different types of Iris varieties, Dutch irises are early bloomers that feather long-lasting flowers over a relatively short bloom period. Individual plants tend to be about 3″ to 6″ inches wide, although they will slowly spread via offshoots when grown as a perennial.
#DUTCH IRIS FULL#
When in full bloom, keep irises in a sunny location. Over the next few days, gradually move it toward a sunny window. When shoots reach about 2 in (5 cm) tall, bring the pot out of cold storage and place it in a warmer (60☏/16☌) location with low light intensity.Keep them in cold storage for about 8 weeks. Avoid storing bulbs near ripening fruit or vegetables because the ethylene gas they produce can damage them. Move pot to a dark, cool, but not freezing, (35-45☏/2-7☌) location such as a basement, unheated garage or refrigerator.Water thoroughly and empty drainage saucer.Top with additional potting mix until just barely covered. Set bulbs so that their tips are even with pot rim.
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Set several bulbs side by side - close but not touching - pointed end up.
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Choose a shallow pot (at least 3 in/7 cm deep) with drainage holes in the bottom.
#DUTCH IRIS HOW TO#
How to Force Dutch Iris Bulbs - Step by Stepĭutch irises need a cold treatment for 8 weeks. Start the process in October or November for mid-winter blooms. Buy Dutch iris bulbs that are firm - not soft or mushy. You'll find good-quality bulbs for sale at garden centers and online nurseries that specialize in flower bulbs. and rare 'Eye of the Tiger' is dramatic with purple and dark-red petals. 'Discovery' is one of the most popular in brilliant blue with a golden-yellow lip. 'Blue Pearl' blooms are deep violet-blue.
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'Professor Blaauw' pale blue petals with a bright yellow stripe. Many Dutch iris varieties are available to choose from. The flowers can grow up to 4 inches (10 cm) across are available in a rich rainbow of colors - blue, violet, white, yellow and bicolors. Tall, upright stems and silky, delicate blooms lend elegant beauty wherever you display them. Unlike the most irises, Dutch irises grow from bulbs, not rhizomes, making them an excellent choice for forcing. Dutch iris flowers are rewarding to grow indoors.