Abstract

Abstract Four foliage plants were grown in greenhouses with maximum temperatures of 32, 38 or 44°C, May through October and irrigated 2, 3 or 4 times/week. Good quality Nephrolepis ex-altata (L.) Schott. ‘Bostonienis’ (Boston fern) and Dieffenbachia maculata (Lodd.) G. Don ‘Perfection’ were grown at 38 and 44° maximum when irrigated 4 times/week. Plant grades of Cala-thea makoyana E. Morr. (peacock plant) were reduced by temperature increase and by frequent irrigation. Chamaedorea elegans Mart, (parlor palm) was unaffected by treatment. After plants were maintained for three months under an interior environment, differences between treatments were less noticeable.

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