What Is the Ideal Temperature Range for Penstemon Rock Candy Ruby ('Novapenrub')?
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Penstemon Rock Candy Ruby ('Novapenrub') · Penstemon Rock Candy Ruby ('Novapenrub')
Grow in fertile, well-drained soil in full sun or partial shade. In cold areas, protect plant overwinter with a dry winter mulch. See penstemon cultivation for further advice
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