GRAPE GROWING IN GREENHOUSES 113 



Treatment of Vines during Summer 



Q. Would you give general directions for treatment of Vines 

 during the summer months ? Ignorant, Windsor. 



A. The side shoots are " stopped " at one leaf beyond the bunch ; 

 if the shoot bears no bunch then it is stopped when it has made 

 five leaves. Further shoots that grow are stopped beyond one leaf. 

 Until the top of the vinery is reached the leading shoot 

 is allowed to grow unchecked, 3 feet only of the summer's 

 growth being left at the January pruning. A moist, warm atmo- 

 sphere is necessary until the Grapes begin to colour, then more 

 air and less moisture are essential. Avoid giving much air at 

 once ; the ventilators should be opened gradually. Allow the 



VINE WITH BOOTS SPREAD OUT 

 FOB PLANTING. THE WAVED 

 LINE INDICATES SURFACE OF 

 SOIL. 



VINE AS RECEIVED FROM 

 THE NURSERY. 



temperature to rise 10 above the minimum night temperature before 

 air is given. When the Vines are in bloom more air and less 

 moisture than usual should be the order of the day. When the 

 Grapes are about the size of Black Currants they apparently cease 

 to make any progress for two or three weeks ; this is the " stoning " 

 period, the period of seed formation. Thinning the berries when 

 they are about the size of Peas is an important item of work. When 

 the Grapes are cut the Vines need full exposure. They cannot then 

 have too much air. If cut with about 4 inches of growth, Grapes 

 will keep for weeks in a cool, airy, dark or shaded room. The piece of 



