THE FLORAL WORLD AND GARDEN GUIDE. S 



that they require liberal supplies from the time they are nicely 

 established after the annual shitt, unti the end of August when 

 more moderate supplies ^vill be found the most conducive to heath. 

 Indeed, from the early part of September unti after they are repotted, 

 it will suffice to keep the soil in a moderately moist state. It wiU, 

 however, be well to state that whenever a fresh application ot water 

 is required, sufficient should be applied to thoroughly moisten the 



^°' The ^lobular and other cacti are grown by very few nurserymen, 

 and there will most probably be some difficulty in purchasing any 

 desired kind. Several of the most popular and free-growing species 

 are to be met with at the dealers in Covent Gardeii^^who are mostly 

 supplied by M. Pfersdorf, of South Row, Kensal New Town who 

 is undoubtedly the largest trade grower in this country. Therein 

 a splendid collection in the botanic gardens at A.ew, which readers 

 interested in this class of plants should, if they have the oppor- 

 tunity, leisurely inspect before purchasing. 



The undermentioned species comprise some of the best m cul- 

 tivation : -^c^^moi^s^V formosa, K Schdhad, E. Forbesz, E Eyriesi, 

 E Fentlandi, E. Bridgesi, E. ornatus, E texam, E. lyectimferus, 

 E Zuccariniana, E. Becaisneana, E. Lmhi, Eclnnocactus electra- 

 canthus E Pfeiferi, E. Stainesi, E. platycerus, E. Echidne, E. 



tlius E. cornigerus, E. Scopa, Mammillarm mimma M phymatotJiele, 

 M bicolor, M. acanthophlegma, M. stella aumia, M clava, M. cru- 

 ciaera M.rhodantha, U. ParMnsoni, M. Schetduma M spmosissima, 

 M. Wildiana, M. longimamma, Mdocactus Grengeh, M. macrantlms, 

 li.l'olyanthus, M.pi/ramidalis, and J/. Selloivi. 



PEOPAGATION OF ROSE-TREES BY ROOT-CUTTD^GS. 



IHB following method is recommended in the Bulletin of 

 the Horticultural Society of Montdidier :— 



Some time in December take up your free-looted 

 rose-trees, or, without taking up, lay bare the roots of 

 . the most vigorous subjects amongst them, so as to take 



off -i few of the larger roots. These pieces of root, divided into 

 segmenrs each two inches long, should be set in pots, in peat-earth, 



Bfimewhat moist, but not damp. , ,. ^i i. -ii 



Raced in a temperate-house or under a glass frame the roots will 

 keeo sound, and most of them will put out small whitish rootlets. 

 InTpring the root-cuttings already furnished with fibres should be 

 set, Cgfy or several together, in 7 or 8 Cent. (2 or S-mch) pots, 

 ind close tu the surface of the soil. -n i. ^ n 



Bot omW of 12- or 15- Cent. (54° to 59- Fahr.) will 

 greatly assist them in striking and throwing up one or more shoots 



'"" rtelS' or'ofnToot rose-trees may thus be raised from xoot- 

 cuttings. This method was discovered by chance not long smee : it 

 might have been adopted long ago. 



January. 



