THE MANUAL OP GARDENING. 
51 
are sometimes used to flavour spring salads. It is very hardy, 
and will bear our hardest winters; but after it has begun to shoot 
in spring, its tender leaves and blossom buds are sometimes in- 
jured by the cold, and it should not therefore be planted in any 
very exposed situation. It will grow in any close place, endure 
any soil, and thrive under the drip of trees. It may be propa- 
gated by cuttings planted in October, or by the suckers, which it 
sends up in abundance. 
Pinckneya pubens, Georgia-bark, Tree . — Like too many 
others of our native plants, this is almost unknown. It is rather 
tender in the middle states, but as an interesting American shrub, 
is entitled to a position in all grounds pretending to possess a 
general collection. A light wood-earth soil, is most congenial to 
it ; and protection by matting, or otherwise, in winter is required. 
Pyrus Japonica. — See page 46. 
Rhus continus. — Venetian Sumac or Mist Tree, frequently 
erroneously termed fringe tree, which (see page 47) is a curious 
shrub; the extremities of the branches being covered by masses 
of russet coloured down. It is, from its singularity, worthy of 
general culture, and succeeds in most situations. 
Robinia hispida, Roso-Acacia . — This may not need descrip- 
tion, being well known. Its beauty has been made more con- 
spicuous, by engrafting it on the pseudo-acacia, which gives an 
elevated head, and more graceful appearance. 
Rosa, The Rose . — There is an almost endless variety of this 
beautiful flower ; many of which, as the Cabbage, the China, and 
Scotch, require very different treatment. All Roses thrive best 
in a rich loamy soil ; but owing to their throwing off a great 
quantity of excrementitious slime, they require to be moved at 
least once in three or four years, or the plants will deteriorate, 
and not produce fine flowers. The Cabbage or Province Roses, 
the French, and Moss, are all to be treated in the same manner ; 
and whether kept as dwarfs or standards must be annually pruned. 
To keep Roses long in flower, gather the flowers as fast as they 
fade close to the stem, nipping off any hips that may form. 
Standard Roses are now very much cultivated. In some cases 
a leading shoot is trained to a stake, (the plant being divested of 
all its branches ;) at four or five feet high it is topped, and then 
allowed to branch out into a head, which is kept closely pruned. 
Standard Roses may also be obtained, by budding the sort desired 
on young stocks of the Dog Rose, or Sweet Brier, which have 
been placed in the desired situation the year before, as they will 
by that means be well established. Pruning must be particularly 
attended to in all Roses except the China ; for if this is neglected 
