Pimpinella 



( 202 ) 



Pineapple 



success. Tubs are better than pots for the big 

 plants. 



Principal Species : 



acris, 20' to 40', My., Jy., officinalis, My., Jy., wh., 

 flowers wh., flushed pk., Ivs. very aromatic (.sv/y/s. 



vulgaris, aud Eugenia 

 and Myrtus Pimenta). 

 Allspice, Pimento Bush, 



berries as large as Peas. 

 Wild Clove, Black Cin- 

 namon. 



PIMPINELLA. (BuRNET SAXIFRAGE.) 



A large genus of annual and perennial herbs 

 (ord. Umbelliferse), most of them worthless horti- 

 culturally. The flowers are white or yellow, and 

 the leaves pinnate. Magna and Saxifraga, the 

 Burnet Saxifrage, are British wildlings. Anisum 

 yields the Aniseed of commerce. 



PINANGA. 



Stove Palms (ord. Palmse) of dwarf habit and 

 slender stems. Not generally cultivated. Prop- 

 agation is by imported seeds sown in brisk bottom 

 heat. Soil, one part loam, two parts peat, and 

 tand. Firm potting and liberal waterings are 

 required. 



Principal Species : 



[NOTE. The height given is that of the trunk.] 



coronata, 15' to 20', Ivs. maculata, Ivs. pinnate, 

 dark grn. 



malayaua, 8' to 12', pin- 

 nate (sifin. malaiana 

 and Seaforthia malai- 

 ana). 



paradoxa, 3' to 6', very 

 slender, Ivs. 1' long, 



usually entire. 



sauderiana, Ivs. 2-lohed, 

 grn. mottled petioles, 

 freckled br. 



spectabilis, Ivs. dark grn., 

 silvery beneath pin- 

 nate. 



pinnatisect (./. Sea- 

 forthia coronata). 



Dicksonii, 16' to 18', Ivs. 

 pinnate. 



disticha, 2' to 6', Ivs. 1' 

 to \y long, few leaflets 

 (syn. Ptychosperma 

 disticha). 



gracilis, 6' to 20', Ivs. 3' 

 to 4' long, pinnate. 



lepida, young Ivs. brown- 

 ish crim. ; best when 

 young. 



PINCHING. 



The removal of the points of growing shoots 

 while they are yet soft and tender. This is an 

 important operation, and yet it is one that is often 

 neglected. Pinching works in two ways; (1) it 

 favours the production of more growths, and with 

 a better equalisation of energy tends to the forma- 

 tion of a more symmetrical plant ; and (2) the 

 development of flower buds instead of wood buds, 

 as in fruit trees. Many plants require pinching to 

 remove their tendency to make straggling growths 

 of unequal strength. A few familiar examples arc 

 Fuchsias, Pelargoniums, Salvias, Coleuses, and 

 bush Chrysanthemums (gee CHRYSANTHEMUMS). 

 Edging plants in summer beds have to be pinched 

 to keep them within bounds ; fruiting growths of 

 Figs are pinched at the fifth or sixth leaf, to 

 prevent the loss of energy upon leaves, and to effect 

 its direct concentration upon the development of 

 the fruit. Apples, Pears, Plums, Gooseberries, 

 Currants, Peaches, Nectarines, Apricots, and Sweet 

 Cherries have their laterals pinched to promote 

 the formation of flower buds in place of wood or 

 growth buds. This must not be done very early 

 in the season, otherwise strong sub-lateral growths 

 will push. For details, see the various fruits men- 

 tioned. 



Pimpernel (see Anagallis). 

 Pinaster (see Pinus). 



PINCKNEYA (syns. PINKNEA and PlNK- 

 NEYA). 



The only species Index Kemensis gives two 

 (ord. Rubiaceas) is a small, greenhouse or half- 

 hardy tree. Propagation, by imported seeds, in 

 sandy peat, in a close frame. Soil, loam and sandy 

 peat in equal parts. 



Only Species : 



pubens, 20', sum., pur., bracts large, showy, pk., 

 the conspicuous part of the flower. Bitter Bark 

 Tree. 



PINE (see PINUS and PINEAPPLE). 



PINEAPPLE. 



Description. A native of tropical America, the 

 Pineapple (Ananas sativa) is cultivated in Asia, 

 Africa, and America for its rich fruit. Pines were 

 at one time extensively grown in British gardens. 

 For species, see Ananas. 



Propagation. The chief method of keeping up 

 the supply of fruiting plants is by suckers. March 

 to September is the best time for removing these. 

 If twisted off carefully, the ends trimmed, and 

 inserted in 6" pots in a temperature of 70, with 

 brisk bottom heat, these soon root and make plants. 

 Seed may be sown in light, firm, sandy soil, and 

 the pans plunged in bottom heat. " Crowns " and 

 "gills "are utilised when a rare variety is to be 

 propagated speedily. Crowns are the shoots at 

 the top of the fruits, and gills are sucker-like 

 offshoots from just below the fruit. 



Soil. Light, fibrous loam, chopped or pulled 

 to pieces, four parts, and fibrous peat one part, will 

 do for soil ; and to five barrowloads of this may 

 be added half a bushel of J" bones. 



Other Cultural Points. Pot culture is almost 

 exclusively adopted under glass. The drainage 

 must be free, and the potting firm. A good fruit- 

 ing size is a 12" pot. After fruiting, the plants 

 may be moved into another pit to complete the 

 development of their suckers. Plenty of light, a 

 summer night minimum of 70 to 7f>, a winter 

 night minimum of *>5, and a 5 to 10 rise by day, 

 must be given. The pots should be plunged in 

 Oak leaves or tan above the hot-water pipes. 

 During summer plenty of water is required, and 

 liquid manure when the fruiting stems appear. 

 Little water is requisite during winter. Draughts 

 should be avoided. 



Insect Pests. Mealy bug and white scale are 

 the most troublesome insects. Regular syringings 

 with tepid soft water during the summer will keep 

 the latter at bay. Kerosene emulsion (see INSECT- 

 ICIDES) is also useful. 



A Selection of Varieties : 

 Black Jamaica, oval, good keeper. One of 



win., 4 Ib. to 5 lb., the best for general 



bronze yel. use. Ripley Queen is a 



Lady Beatrice Lambton, good form. 



conical, win., 8 Ib. to *Smooth-leiived Cayenne, 



9 lb., or., yel. flesh. cylindrical, 6 lb. to 9 lb., 



*Queen, cylindrical, 3 lb. flesh pale yel., very rich 



to 8 lb., very juicy and and sweet ; not a good 



sweet, flesh pale yel., sucker bearer. 



* Select either of these for one variety. 



Other Varieties : 

 Charlotte Rothschild, cy- Lord Carrington, pyram- 



lindrical, 7 lb. to 10 lb., idal, win., 4 lb. to 7 lb. 



golden yel. flesh. Re- Thoresby Queen, 6 lb. to 



quires more heat. 8 lb., or. yel. flesh (syn. 



Hurst House, pyramidal, Bennett's Seedling). 



sum., Gib. (syn. Fair- 



rie's Queen). 



