ROSES 117 



caution. When pruning is carried out as directed, and the plants 

 relieved of much old wood, the eggs of these caterpillars will depart 

 also. Green-fly will not trouble those who keep their Hoses thoroughly 

 healthy. They do not like the sap of healthy plants as a rule, it is the 

 weakly growths they attack. Good syringings of cold water dislodge 

 many, and it is a good plan to dip the ends of the young shoot when 

 covered with green-fly into a vessel of strong tobacco water or quassia 

 chips solution. 



A good recipe for quassia chips solution is as follows : Take four 

 ounces of quassia chips, steep them in water for a few hours, then 

 simmer from twelve to twenty-four hours in a gallon of water, and add 

 three ounces of good soft soap. When dissolved, add water to make up 

 two and a-half gallons. Green-fly upon Roses under glass can be readily 

 exterminated by fumigating. M'Dougall's tobacco sheets are the 

 simplest remedy. One or more, according to cubic measurement, are 

 hung in the house, and set alight. They gradually consume, and not a 

 fly will be found the next day. Richards' XL All is too well known to 

 describe ; it is an excellent remedy. 



Red spider is often very prevalent on Roses under glass. Want of 

 syringing and too dry an atmosphere cause it. The leaves turn yellow 

 and drop off. With a magnifying glass the pests may be seen running 

 about on the under side of the leaf. The same fumigation will check 

 them, but syringing well the under side of the leaves is the best remedy. 



Mildew is a troublesome fungus. It inflicts considerable injury by 

 choking the breathing pores of the foliage, and consequently growth 

 is hindered. When a plant is badly attacked, the latter has the ap- 

 pearance of being dusted with flour. It makes its appearance under 

 the leaf as well as on the surface. A thoroughly good dredging with 

 black sulphur, underneath as well as on the surface of the leaf, will 

 check its ravages. Put some sulphur in a piece of cheese-cloth 

 made into a bag, and thoroughly dust the foliage with it. After 

 remaining on for two days, syringe off and give another dredging if 

 needful; this should be done on a quiet evening, when the foliage is 

 slightly damp. It is a mistake to wait until the plants are badly at- 

 tacked, but as soon as a few spots appear, press them with the thumb 

 and finger, previously dusting or dipping the thumb and finger into 

 some sulphur. Mildew is the result of a check of some kind. Out of 

 doors one cannot quite avoid it, but never let anything, if possible, 

 check the young roots, such as strong liquid manure. Indoors one is 

 troubled most with mildew. In starting Roses into growth, do so 

 gradually, then the foliage becomes as it were hard, and can stand a 

 little cold. Give them, however, very warm treatment at the start, 

 so that the growth is tender, and the first cold wind, or too much air, 

 will bring about mildew. Cold winds blowing immediately on the 

 foliage are fatal. Soot is a good remedy for mildew if applied carefully. 

 It should be some months old, and must not remain on the foliage more 

 than two days at a time. If the tiny white spots of mildew are dusted 

 with sulphur when first observed, the plague is checked. 



Red Rust or Orange Fungus is another troublesome fungus. It 



