I2O 



PLANT PROPAGATION 



be made of natural bottom heat. For short periods in 

 fall and spring, bundles of cuttings are buried upright 

 with their butt ends upward to hasten callusing. Depth 

 will be governed by length of cuttings and season ; a 

 covering of two to six inches of sand or friable soil is 

 enough. Because the upper ends of cuttings are placed 

 downward the buds are kept cooler than the butt ends 



FIG. 107 STAND FOR MAKING GRAFT AND CUTTING BUNDLES 



The tier around each stem shows where the graft has been made. When 

 the rack is full the loose raffia is brought up and tied around the bundle. 



and, therefore, do not sprout even under fairly favorable 

 conditions for starting growth. 



Fall-callused cuttings may be dug up and stored in 

 cellars over winter. Fresh hardwood sawdust from green 

 wood is considered the best material in which to store 

 mature wood cuttings because it has just the right 

 humidity and retains moisture so well ; watering is rarely 

 necessary. The storage room must be kept cold but 

 above freezing point. If warm the packing material may 

 dry out rapidly. Watering may cause cuttings to heat 



