The Canadian Horticulturist. 



ROSES NEEDING PROTECTION. 



|N replying to question No. 3, by " Novice," in the January No. of 

 the Horticulturist p. 40, I beg to say that the yellow Austrian 

 and Persian briers, Harrison's semi double, and the single-flowering 

 varieties, are the only yellow roses that are hardy enough without 

 winter protection in Central Ontario. The latter, although single, 

 is really beautiful when in blossom ; the foliage has also the 

 Eglantine scent of the old-fashioned sweet brier (Rosa Ruhiginosa) of England ; 

 it is a botanist's as well as a florist's flower, and deserves a place in every flower 

 garden. Any variety of the moss rose requires artificial protection in Central 

 or Southern Ontario ; in Northern Ontario this may not be necessary, the snow- 

 fall being deeper and the winter not so variable there, natural protection being 

 adequate. 



Ever-blooming roses, which are only indigenous to the southern parts of 

 the north temperate zone, — such as Teas, Bengals, Bourbons, Damascenes, etc., 

 may be designated as Remontants, and hybrids of these are named hybrid per- 

 petuals ; all require culture under glass There is another class of Remontants 

 which are hardier, also termed hybrid perpetuals, which are suited for outside 

 culture ; these are produced by cross-fertilizing the ever-blooming varieties 

 named above and the annual-flowering or June roses, indigenous to the central 

 and northerly parts of the north temperate zone. 



Remontant scarcely applies to this last class of hybrids when grown in 

 Ontario, many of them called semi-annual only flowering twice during the 

 season. Non-remontants may describe the June or annual-flowering roses 

 which comprise the finest and sweetest-scented varieties in cultivation. The 

 greatest troubles the rose grower has to contend with during the summer 

 season are the slug and the thrip ; these require vigilant watching. The slug 

 is a small greenish slimy insect which appears on the upper surface of the leaf, 

 and, where numerous, will quickly spoil all the foliage. This pest is readily 

 destroyed by dusting, either with white hellebore, fresh slaked lime, or dry 

 wood ashes, or, what is best of all, to sprinkle or spray water in which tobacco 

 has been soaked. The thrip is a minute whitish fly or midge, usually found on 

 the under surface of the leaf, and not so readily detected as the former ; the 

 whitish appearance of the leaf about the midrib reveals its presence ; tobacco 

 water is the best remedy, but must be ejected upwards, so as to reach the under 

 surface of the foliage. Handy appliances for this purpose may be obtained at 

 any of the seed stores. N.B. — Do not use Paris green, if possible to avoid it. 

 Berlin, Ont. Simon Roy. 



