POT 



[665] 



PEI 



are likely to intrude, the convex side of 

 the potsherd should be placed over the 

 hole ; but for amateurs, nothing is better 

 than small caps of tin or zinc to cover 

 over the hole completely ; and in either 

 case, plenty of drainage placed over them, 

 the materials being smaller as it ascends. 

 For anything requiring nicety, there ought 

 to be at least one-inch drainage in a five- 

 inch pot, and so in proportion. The best 

 covering for the drainage is a sprinkling 

 of green moss, to separate the drainage 

 from the soil; over that some of the 

 rougher materials should be placed, and 

 then some of the finer, on which the 

 base of the ball should rest. 



Pottiny or Shifting. The pots should 

 be new or thoroughly clean. No man 

 deserves to have a nice plant who would 

 place it in a dirty pot, and rarely will he 

 be rewarded with one. When he attempts 

 to shift again, it serves him right to find 

 that roots and soil alike are so sticking 

 to the sides of the pot, that he must 

 break the pot, or lacerate the roots. Be- 

 fore commencing operations, see that the 

 ball of the plant is moist from the centre 

 to the circumference. If not, you can never 

 moisten it afterwards without labour, 

 which may as well be spared. 2. If you 

 wish to rattle your plants on until a cer- 

 tain period, upon the successive shift 

 system, never allow the roots to mat 

 round the sides of the pot ; but reshift 

 as soon as they get there. 3. If the roots 

 should be a little matted, gently disen- 

 tangle them, even though in doing so 

 you get rid of a good quantity of the old 

 soil, and spread these roots out into 

 layers, packing them as you proceed with 

 soil of various degrees of fineness. 4. 

 The soil in general should be as high in 

 temperature, or nearly so, as the plant 

 enjoyed previously. Cold soil has injured 

 many a fine plant. We have said nothing 

 of cutting roots, because that chiefly ap- 

 plies to particular times and instances. 

 Generally, when after a period of rest, 

 fresh growth is to be induced. 



Immediately -after-treatment. What- 

 ever system of potting has been adopted, 

 a greater excitement to growth than usual 

 should be given. If well watered pre- 

 viously to potting, and a largish shift 

 given, little water will be wanted at the 

 root for a time ; but that should be several 

 degrees warmer than usual; and fre- 

 quent syringings in bright weather should 

 be imparted, accompanied with shading, 



if necessary. If a small shift was given, 

 water will be wanted more freely at the 

 root; and here, as well as in the other 

 case, a higher temperature should for a 

 time be maintained, until fresh growth 

 has freely commenced, when air and ex- 

 posure may be more freely given. See 

 ONE-SHIFT SYSTEM. 



POTTING-OFF is the term applied to 

 moving into pots, singly, seedlings or 

 cuttings from where they have been 

 grown numerously together. 



POTTLE. See BASKET. 



POUPA'RTIA. (Called Bois de Poupart, 

 in the Isle of Bourbon. Nat. ord., Tere- 

 binths [Anacardiacesej. Linn., 10-Decan- 

 dria k-Pentagynia. Allied to Spondias.) 



Stove evergreen trees. Cuttings of ripe shoots 

 in sand, under a bell-glass ; peat and loam. 

 Winter temp., 55 to 60 ; summer, 60 to 85. 

 P. -BorAo'm'c(Bourbon). 40. Purple. Bourbon. 1825. 



du'lcis (sweet. Otuheite-apple). 30. Yellowish. 



Society Islands. 1793. 



mangi'fera (mango-bearing). 30. White. S. 



Ind. 1820. 



PEA'TIA. (Named after M. Prat, a 

 French officer. Nat. ord., Lobeliads [Lo- 

 beliacese]. Linn., 5-Pentandria I-Mono- 

 gynia.) 



Greenhouse herbaceous perennials. Seeds in a 

 slight hotbed, in spring ; dividing the plants ; 

 cuttings of the young shoots in sandy soil, any 

 time, but best in autumn and spring ; sandy loam, 

 and a little peat or leaf-mould; require a green* 

 house or cold pit in winter. Lo'belia Begonias- 

 fo'lia belongs to this genus. 

 P. corymbo'sa (corymbed). White. June. Cape 

 of Good Hope. 1824. Trailer. 



ere'cta (upright). 1. Blue. June. N. Holland. 



1819. 



PREPU'SA. (From prepousa, comely; 

 the beauty of the flowers. Nat. ord., Gen. 

 tianworts [Gentianacese]. Linn., 5-Pen- 

 tandria 1-Monogynia. Allied to Leianthus.) 

 Stove herbaceous perennials. Seeds in a hotbed, 

 in spring ; division of the plant at the same time. 

 Winter temp., 48 to 55 ; summer, 60 to 80. 

 P. Hookeria'na (Hooker's). 1. White, crimson. 



March. Brazil. 1839. 



PRESTO'NIA. (Named after <7. Preston, 

 M.D. Nat. ord., Doybanes [Apocynacese]. 

 Linn., 5-Pentandria 1-Monogynia. Allied 

 to Kynchospermum.) 



Stove evergreen, white-flowered twiners, from 

 Brazil. Cuttings of half-ripened, stubby side* 

 shoots in sand, under a bell-glass, in beat ; sandy 

 loam, and a little fibry peat or dried leaf-mould. 

 Winter temp., 48 to 58; summer, 60 to 85. 

 P. glabra'ta (smoothed). 8. July. 1823. 



tomento'sa (downy). 8. July. 1820. 



PRICKLY CEDAR. Cyatho'desoxyce'drus. 

 PRICKING-OUT is transplanting seed- 

 lings from their seed-bed more thinly, 



