i88i.] GREENHOUSE PLANTS. 107 



White Cos and the Black-seeded Brown Cos, but is quite unnecessary 

 in the case of the Paris White Cos varieties. The Black-seeded Brown 

 Cos is not so liable to run to seed as the latter. For this reason, a few 

 plants of it may with advantage be grown with every batch of White 

 Cos, and at times may prove invaluable for the prevention of a break 

 in the supply. 



Sowing Broccoli and other seeds. — The wall-borders are very commonly 

 utilised for raising the principal portion of Broccoli, Cauliflowers, Brus- 

 sels Sprouts and other greens, and this I consider a mistake, simply 

 because the space is much too limited, the consequence being beds of 

 weakly plants— the reverse of what should be aimed at. By all means 

 sow seed of a few early Cauliflowers, Brussels Sprouts, and even Broc- 

 coli, on these borders ; but give the plants room. Sow the seeds of 

 main and late crops thinly in the open, and thereby secure sturdy 

 plants that will move readily at any time. W. Iggulden. 



GREEK'HOUSE PLANTS. 



NO. II. — CORREAS. 



These plants are evergreen dwarf shrubs, of compact habit of growth, 

 natives of Australia j and when properly treated, produce from the 

 axils of the leaves, on the current year's shoots, their bright-coloured 

 wax-like flowers very freely during the autumn, winter, and spring 

 months. 



Correas do not receive from gardeners generally the amount of atten- 

 tion that their decorative qualities entitle them to. About twenty-five 

 or thirty years ago two or three varieties of Correa were to be seen in 

 almost every greenhouse, but for several years past, for some reason or 

 other, most gardeners have ceased to cultivate them. Possibly the pres- 

 ent neglect of these and some other genera of beautiful-flowering green- 

 house plants that were carefully looked after at the time mentioned, is 

 owing in some measure to the great improvement that has been effected 

 in the flowers of Zonal Pelargoniums. The latter plants are easily 

 cultivated, and produce their large trusses of bright-coloured, well- 

 formed flowers in more or less abundance all the year through, and 

 consequently several other kinds of beautiful-flowering greenhouse 

 plants, requiring a little more careful attention to maintain them in 

 a healthy flowering condition than that usually bestowed upon Pelar- 

 goniums, have been in many instances crushed out of the greenhouse 

 by the gay and easily cultivated Zonals. One difficulty, however, in 

 the culture of Correas is in the matter of propagation, but this only 

 applies to places where proper facilities for carrying out the process do 

 not exist. 



Correas, with the exception of C. alba, are somewhat difiicult to 

 propagate by cuttings, — at least, this has been my experience with most 



