THE NURSERY-LIST 401 



Plumeria. Apocynaceoe. 



Propagated by cuttings, under glass, usually taken in February 

 or March. 



Podocarpus. Taxacece. 



Grown from cuttings of firm wood under cover ; also from seeds ; 

 sometimes grafted on the related species. 



Podolepis. Composites. 



Raised from seed, either in April under glass or later outdoors. 



Poinciana. Leguminosce. 

 Propagated by seeds. 



Poinsettia (Euphorbia pulcherrima) . Euphorbiaceoe. 



Propagated by cuttings of growing shoots, of two or three buds 

 each, handled on a cutting-bench or in a frame. Many propagators 

 prefer to let the cuttings lie exposed two or three days before setting 

 them. Cuttings of ripened wood can be used to good advantage 

 when the heat is rather low ; immerse cuttings in water as soon as 

 cut from the old plants ; then put them in thoroughly wet sand and 

 keep wet until rooted. Many propagators prefer to cut to a heel. 

 Cuttings taken early in July should make good midwinter plant. 



Polemonium. Polemoniaceae. 



Propagated by seeds, which may be sown in fall, and by division. 



Polianthes (Tuberose). Amaryllidacece. 



Increased by bulbels or offsets. Remove these from the parent 

 bulb in the fall, and keep in a warm dry place until the following 

 spring. The soil should be light, rich and moist throughout the 

 summer. Before frost comes in the fall, take the bulbs up, and when 

 dry, cut off the leaves. The bulbs should be kept as during the pre- 

 ceding winter, and the culture throughout the following year is the 

 same as during the first. The bulbs usually flower the second or 

 third summer. 



Polygala (Milkwort). Polygalacea. 



Propagated by seeds sown in fall or early spring ; tropical species 

 also by division, and by cuttings of young shoots under cover. 



Polygonum. Polygonaeece. 



Raised from seeds. The perennials are also easily increased by 

 division of the rootstocks, and by cuttings. 

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