42 MANUAL OF AMERICAN GRAPE-GROWING 



larger pots once or twice as growth progresses. In early 

 summer, the young plants are set in nursery rows out of doors 

 and by fall the young vines should be strong and vigorous. 



Single-eyes are also started in hot-beds, cold-frames and 

 even in the open air without the aid of artificial heat. In 

 hot-beds and cold-frames, the method is only a modification 

 of that described for greenhouses. Out of doors the cuttings 

 are given the same conditions under which long cuttings are 

 rooted, except that the whole of the short cutting is buried 

 an inch deep in the nursery row. 



HERBACEOUS CUTTINGS 



Grapes are easily propagated from herbaceous cuttings, 

 although since the vines are weak and the method expensive, 

 they are seldom used. Green cuttings are usually taken from 

 plants forced in greenhouses, but may be taken in summer 

 from vineyard vines. A green cutting is usually cut with two 

 buds with the leaf at the upper one left on. The cuttings 

 are set in propagating beds of sand, or pots of sand, in close 

 frames under which there is brisk bottom heat. To prevent 

 excessive evaporation, the frames are kept closed and the 

 atmosphere warm and moist. As growth progresses, or if 

 mildew appears, the frames are more and more ventilated. In 

 two to four weeks, the cuttings should have rooted sufficiently 

 well to be transplanted to pots. Herbaceous cuttings made 

 in the summer must be kept under glass until the following 

 spring. 



LAYERING 



The grape is readily propagated from layers of either green 

 or mature wood, the method being certain, convenient and 

 producing extra vigorous plants. The drawback is that fewer 

 plants can be obtained by layering than from cuttings with a 



