WARM GREENHOUSE, 101 



CHAPTEK II. '/' ;. t < jr/;'i>::-- 

 WARM GREENHOUSE. 



THE term "warm greenhouse " implies, for the purpose 

 of growing the bulbs and tubers hereafter described, a 

 structure heated artificially so as to maintain the following 

 average temperatures : Winter, 60 deg. by day and 55 deg. 

 by night ; spring, 65 deg. by day, and 60 deg. by night ; 

 summer, 70 deg. by day, and 65 deg. by night; autumn, 

 60 deg. by night, and 65 deg. by day. Such a structure 

 comes in intermediate between a hothouse or stove and 

 a cool greenhouse. Our experience of the needs of the 

 amateur gardener has taught us that there are many who 

 have greenhouses sufficiently heated to command above 

 temperatures, and, as there are several genera of bulbs 

 and tubers that like more warmth than can be assured in 

 the ordinary cool greenhouse, and yet would not do so 

 well in the warmer temperature of the hothouse, we have 

 decided to provide this separate section for them. 



Begonia. There are several distinct sections of 

 begonias, but the only one that properly comes within the 

 scope of this work is the Tuberous-rooted, a race of 

 brilliant-coloured flowering plants which have become 

 immensely popular as greenhouse and flower gardening 

 decorative subjects during the past twenty years or so. For 

 pot culture on the stage, or for growing in baskets sus- 

 pended from the roof, there are few plants to equal the 

 present race of single and double varieties in cultivation 



There are two ways of acquiring a stock of these plants, 

 viz., by rearing them from seed or 'by purchasing tubers. 

 The first method is the cheaper where a large assortment 

 of colours is desired ; and the latter the better one where 

 specially choice-named varieties are preferred. Seeds 



