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Family: Asteraceae
(ass-ter-AY-see-ee) Genus: Cirsium (SIR-see-um) Species: heterophyllum (het-er-oh-FY-luh)
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Category PerennialsWater Requirements Drought-tolerant; suitable for xeriscapingAverage Water Needs; Water regularly; do not overwater Sun Exposure Full SunSun to Partial Shade Foliage HerbaceousThis plant is resistant to deer Foliage Color UnknownHeight 36-48 in. (90-120 cm)Spacing 18-24 in. (45-60 cm)Hardiness USDA Zone 5a: to -28.8 °C (-20 °F)USDA Zone 5b: to -26.1 °C (-15 °F) USDA Zone 6a: to -23.3 °C (-10 °F) USDA Zone 6b: to -20.5 °C (-5 °F) USDA Zone 7a: to -17.7 °C (0 °F) USDA Zone 7b: to -14.9 °C (5 °F) USDA Zone 8a: to -12.2 °C (10 °F) USDA Zone 8b: to -9.4 °C (15 °F) |
Where to Grow UnknownDanger Plant has spines or sharp edges; use extreme caution when handlingBloom Color Magenta (pink-purple)Lavender Bloom Characteristics This plant is attractive to bees, butterflies and/or birdsBloom Size UnknownBloom Time Late Spring/Early SummerMid Summer Late Summer/Early Fall Mid Fall Other details May be a noxious weed or invasiveSoil pH requirements 5.1 to 5.5 (strongly acidic)5.6 to 6.0 (acidic) 6.1 to 6.5 (mildly acidic) 6.6 to 7.5 (neutral) 7.6 to 7.8 (mildly alkaline) Patent Information Non-patentedPropagation Methods From seed; direct sow outdoors in fallFrom seed; winter sow in vented containers, coldframe or unheated greenhouse From seed; sow indoors before last frost Self-sows freely; deadhead if you do not want volunteer seedlings next season Seed Collecting Bag seedheads to capture ripening seed |