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Penstemon grandiflorus

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Large flowering species with lavender-blue flowers on 3 to 4 foot tall stems. Blue-green foliage, a showy prairie plant blooming in summer.

Zones 3-8

For seed germination start with 6 to 8 weeks at 32-39ºF, move to 65-75F for germination which is spread out over a number of weeks.

300 seeds