92 PEOPAGATION. 



ventilation is given, the growing- stocks will be quite 

 safe until March. Then, as the days grow warmer, 

 ventilation will Have to be increased, starting about 

 an hour earlier in the mornings each week. When the 

 shoots have attained a good size, the Rose grower 

 who is content with his stock will inspect the root 

 growth, and if a good supply of young roots has been 

 formed he will then carefully repot and grow his trees 

 on until he pots them out in the open ground, in about 

 the middle of May. But if he is ambitious and is still 

 further anxious to increase his stock, he will proceed 

 to adopt yet another method known as spring grafting-. 



In this case the briar should have been allowed to 

 grow so that the flow of sap is about equal to that 

 lately drawn by the shoot from which the sections are 

 to be taken. Spring grafting will come under the head 

 of rind-grafting. 



The method is exactly the same, although the 

 shoots, being tender, will require greater care in tying 

 on ; also all young plants must be kept dry. Let it 

 suffice only to keep the ash beneath the pots moist as 

 the grafted stocks start to grow, which will be in 

 about three or four weeks, when they will want care- 

 ful handling. The shoots are very tender, and it is 

 always advisable to shade them from the sun or very 

 strong light. In repotting it is advisable to repot from 

 a three-inch pot to a five-inch, and from a three-and-a- 

 half-inch to a six-inch. Then give a good watenng 

 and leave for two days, after which they can be 

 hardened off. 



Many stocks will be found to be too large for w'Hip- 

 grafting, and often the grower has but a limited num- 

 ber. We will, therefore, consider briefly two other 

 methods, cleft-grafting and w^edge-grafting, both of 

 which can easily be learnt and practised at times to 

 advantage. 



Cleft-Grafting. — The size of the stock in this case 

 is immaterial, since the scion is inserted at the side. 

 Choose well ripened wood for the scion of about an. 



