Family: Plantaginaceae
Genus: Penstemon
(PEN-stem-on) Species: strictus (STRIK-tus) Synonym:Penstemon strictus subsp. angustus
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Category PerennialsWater Requirements Average Water Needs; Water regularly; do not overwaterSun Exposure Full SunFoliage EvergreenSmooth Foliage Color UnknownHeight 24-36 in. (60-90 cm)Spacing 18-24 in. (45-60 cm)Hardiness USDA Zone 3a: to -39.9 °C (-40 °F)USDA Zone 3b: to -37.2 °C (-35 °F) USDA Zone 4a: to -34.4 °C (-30 °F) USDA Zone 4b: to -31.6 °C (-25 °F) 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 UnknownBloom Color Blue-VioletBloom Characteristics UnknownBloom Size UnknownBloom Time Late Spring/Early SummerOther details UnknownSoil pH requirements 6.6 to 7.5 (neutral)7.6 to 7.8 (mildly alkaline) 7.9 to 8.5 (alkaline) Patent Information Non-patentedPropagation Methods From herbaceous stem cuttingsFrom seed; direct sow outdoors in fall From seed; winter sow in vented containers, coldframe or unheated greenhouse From seed; stratify if sowing indoors Seed Collecting Allow pods to dry on plant; break open to collect seedsProperly cleaned, seed can be successfully stored |