Hose 



( 291 ) 



Rotation of Crops 



June, and also in autumn, and lay their e^s on 

 the leaves, the larvae eventually finding their way 

 into the soil to enter the cocoon and pupa stages. 

 Dusting with flowers of sulphur or Hellebore pow- 

 der and syringing with Paris Green or Hellebore 

 solutions are useful, as are hand-picking and 

 shaking the plants. 



Rose Scale. The Rose is not exempt from the 

 attacks of the scale insects (Coccidie), with which 

 most gardeners are only too well acquainted. The 

 principal one attacking the Hose is Diaspis Rosas, 

 which appears in the shape of a grey or white 

 scurf on the stems and twigs of the plants. Another 



ROSE OF HEAVEN Or LYCHNIS 



CtELI-BOSA). 



ROSMARINUS. (ROSEMAHY.) 

 One species, officinalis, the Common Rosemary 

 (ord. Labiate). The Rosemary has been in culti- 

 vation from time immemorial. It makes a dense 

 bush 4' high, clothed with small, deep green 

 leaves, and white or lilac flowers. The leaves 

 contain a fragrant essential oil in large quantities, 

 which is used in perfumery, and is also one of the 

 chief ingredients as oil of Rosemary of some 

 hair washes. Propagation, by cuttings, seeds, 



npany. /,/'. 



KOSE WHITE LADY (< p. 288). 



is Lecanium Rosse. Kerosene emulsion, Gishurst 

 Compound, Abol, Fir tree oil, and Bordeaux Mixture 

 have all been used with success, the first four as 

 directed on the packages, and the last according to 

 the instructions under BORDEAUX MIXTURE. 



Rose Beetle. Cetonia aurata commonly attacks 

 the Rose. It also feeds upon the flowers of Straw- 

 berries and Apples, and not infrequently does a 

 good deal of damage. Hand-picking is the best 

 remedy. 



I !iis" AI-IIC'HI (sir Ilnhiiiia liisjiida). 



'''"*"' Af>/>h' ("'''' Kiujrnia Jamlim and Jambosa). 



lime Hay (tir F.piliibhim august if ullum). 



Jinxi' I'll 111 /linn, (nee Lychnis). 



Rosemary (xii- Iliisiiiiiriitus). 



and laye. Soil, light, sandy loam in a well- 

 drained, sunny position. There are several 

 varieties. 



ROTATION OF CROPS. 



A system practised in gardens with the object of 

 obtaining the maximum amount of material with 

 the minimum loss to the soil. It is argued by old 

 practitioners that it is not advisable to plant two 

 successive crops belonging to the same natural 

 order, as, for instance, Cabbages following Cauli- 

 flowers, or Beans following Peas. Again, two deep 

 rooting crops should not follow one another, deep 



Rme nftlte Wnrltl (srr Camellia japonica). 

 llusti'llcra (see Jf allot it t). 



