WINTER-FLOWEKING PLANTS. 87 



rizemas, Geraniums of all kinds, Hibiscus, Hyacinths, 

 Myrsiphyllum (Smilax), Mahernias, Primulas, Stevias, 

 Eoses, Violets, and the various kinds known as green- 

 house plants, which, together with those above named, 

 can be found fully described in the florists' catalogues. 



The second class, or hot-house plants, require an aver- 

 age temperature of sixty degrees at night, the range of 

 which, however, may occasionally run from fifty-five to 

 sixty-five degrees without injury. Of these we name the 

 following : Begonias, Bouvardias, Clerodendrons, Eu- 

 phorbias, Epiphyllums, Fuchsias, Heliotropes, Poinsettias, 

 Roses (these will do in either temperature, though rather 

 better in the lower), Tuberoses, etc. For farther lists 

 and descriptions of varieties, reference may be made to 

 the catalogues. The necessity for this difference in tem- 

 perature is not absolute, as many plants will do very well 

 in either ; but we make this distinction as a guide to 

 those having a choice of temperature, in order that they 

 may select the plants that are best adapted to the one at 

 command. In a greenhouse, particularly if heated by a 

 flue, there is often a difference of five or ten degrees be- 

 tween one end and the other ; and in such a case the 

 plants named in the first class must be placed at the 

 cool end, and those of the second class at the other. 



One of the most troublesome pests of plants grown in 

 the greenhouse or the sitting-room in winter is the aphis, 

 or "green fly," as it is termed. We have no difficulty in 

 gettino; rid of it in the greenhouse, when it is separate 

 from the dwelling ; all that is necessary is to get some to- 

 bacco stems (such as are thrown out as refuse by cigar 

 makers), and sprinkle them with water, so that they 

 become slightly damp. About half a pound or so for 

 a greenhouse twenty-five by twenty feet is placed over a 

 small handful of shavings, only enough to light the 

 dampened tobacco, as too many shavings might injure 

 the plants by smoke. The burned tobacco stems give 



