Rhododendron Percy Wiseman. Established Plants: Percy Wiseman a relatively compact growing variety of Rhododendron actually classed as a semi dwarf variety reaching a relatively modest 2 metres at maturity with a similar spread. Percy Wiseman produces masses of salmon pink flowers late spring through early summer. Rhododendron are an easily maintained plant that requires no pruning. Rhododendron do not like lime soil, this stunts growth and prevents flowering. To ensure a good growing and flowering plant only plant in acid soil or ericaceous compost.
Always ensure Rhododendron are planted in acid soil, they will not do well in lime soil. To keep acid levels high try adding sulphate of iron to the planting area this will keep acid levels high. For pot planting ericaceous compost only. Extremely hardy to -10 and beyond these plants require winter protection in the coldest areas only. When planting do not plant to deep Rhododendron are classed as surface rooting plants so ideally plant with the roots just covered.