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Family: Apiaceae
(ay-pee-AY-see-ee) Genus: Eryngium (er-RIN-jee-um) Species: giganteum (jy-GAN-tee-um) Synonym:Eryngium asperifolium Synonym:Eryngium haussknechtii
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Category PerennialsWater Requirements Drought-tolerant; suitable for xeriscapingSun Exposure Full SunFoliage HerbaceousFoliage Color UnknownHeight 36-48 in. (90-120 cm)Spacing 12-15 in. (30-38 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 Dark BlueSilver/Gray Bloom Characteristics Flowers are good for cuttingFlowers are good for drying and preserving Bloom Size UnknownBloom Time Late Spring/Early SummerMid Summer Late Summer/Early Fall Other details UnknownSoil pH requirements 6.6 to 7.5 (neutral)7.6 to 7.8 (mildly alkaline) Patent Information Non-patentedPropagation Methods From seed; direct sow outdoors in fallSelf-sows freely; deadhead if you do not want volunteer seedlings next season Seed Collecting Allow seedheads to dry on plants; remove and collect seeds |