TREE AND SHRUB LIST 209 



PTELEA. Hop Tree. 



*SEEDS. Sow in Autumn or stratify in sand. 

 LAYERS. Varieties of Hop Tree are easily layered. 

 GRAFTING AND BUDDING. Graft under glass or bud out of doors on 

 seedlings. Golden form grafted on the type. 



PTEROCARYA. Winged Walnut. 

 *SEEDS. Sow in Autumn or stratify. 



PTEROSTYRAX. Wistaria Tree. 



SEEDS. Ripen in Autumn; sow immediately or in Spring. 

 CUTTINGS. Green wood under glass, in Summer. 

 GRAFTING. May be grafted on seedling Halesia. 



PUERARIA. KudzuVine. 

 CUTTINGS. 

 LAYERS. 



PUNICA. Pomegranate. 

 CUTTINGS. Hard wood. 

 GRAFTING. May be grafted on wild type. 

 PYRUS. Apples, Pears, Crabs. 



Ornamental species only; commercial fruit discussed on pp. 135- 



136. 



SEEDS. The botanical species P. coronaria, P. ioensis, etc. come true. 

 BUDDING. For Pyrus coronaria and Bechtel's Double Flowering 

 Crab. Mid- July or later on common Apple stock. Should be 

 budded near end of growing season. When budded earlier the 

 union does not take place so well. 

 Pyrus Malus. Apple. 



GRAFTING. The commonest stock for the Apple is the wild apple of 

 Europe, but for the Siberian Crab varieties P. prunifolia, P. an- 

 gustifolia or P. coronaria are used. For dwarfing the Apple, 

 Paradise and Doucin stocks are used, both of which are small 

 types of P. Malus. (See p. 136.) 

 QUERCUS. Oak. 

 *SEEDS. Joseph Meehan writes: 



Many Oaks are of the class which commence to grow as soon as the 

 acorns fall, and these sorts require sowing within a week or so after 

 they are ripe. In this class are the White Oak, Chestnut Oak, Rock 

 Chestnut, Chinquapin, and maybe others. If not sown within a week 

 or two after falling they will not grow, unless in the meantime they have 

 been in a damp place. The trouble is, that they either lose vitality 

 by drying up or the radicle pushes out so far, because of damp surround- 

 ings, that they cannot be handled satisfactorily afterward. Beds 

 should be prepared for them at once. Those about 3 feet in width 

 are best, as they afford opportunity to weed the seedlings without 

 treading on the beds. Such beds made in the Fall, and spread with 

 acorns, the latter covered with 2 inches of soil, should give a treat in 

 the way of seedlings next Spring. Before Winter sets in place a covering 

 of forest leaves over the beds, to keep the acrons free from alternate 

 freezings and thawings. 



The first of these early sprouting acorns to ripen is that of the little 

 Chinquapin Oak, Quercus prinoides. Next come the two Chestnut 

 Oaks, Quercus prinus and Q. castanea, followed by the White Oak, Q. alba. 

 At this writing, September 28, the prinoides and prinus are ripe, and t;h^ 

 alfya just about ready to fall from the trees. 



