Common Pests & Diseases
Diseases
Generally disease-free but may be susceptible to powdery mildews and grey moulds
Pests
May be susceptible to slugs, snails, aphids and leaf and bud eelworms
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Penstemon Rock Candy Ruby ('Novapenrub') · Pests & diseases
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
Watering: Regular moderate irrigation, avoid fully dried growing mediumSunlight: Full sun · Partial shadeInformation to be completed