Abstract
Abstract Growth of rhododendron rooted cuttings was induced by keeping them at a minimum night temperature of 18.3°C until buds began to swell (10 to 14 days). This treatment produced a subsequent flush of growth that occurred at minimum 4.4° and resulted in spring growth of rooted cuttings of Rhododendron ‘Nova Zembla’ and fall growth of R. ‘PJM hybrids’ with potentially large savings in heat.
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