Treating Frozen Vines. 329 



vines began to recuperate. The right-hand spray 

 shows a cluster of flowers appearing upon a belated 

 shoot. Of course, only the clusters of the largest 

 size, as shown at the left, ripened into good fruit. 



In proceeding to treat frozen vines, like those de- 

 scribed, it must first of all be borne in mind that 

 the injured parts are of no further use to the plants, 

 and, as we have seen, they are very apt to weaken 

 the plant by causing it to lose much of its moisture. 

 The rational procedure, therefore, is to strip off all 

 the frozen shoots soon after the disaster, so as to 

 allow the energies of the plant to divert themselves 

 to the production of new shoots. When the injured 

 parts are soft and small, it is customary to remove 

 them by pulling them off, rather than by cutting 

 them off. In vineyards which are well pruned, the 

 cost of stripping ought not to exceed one dollar an acre. 



What is an injurious degree of cold?* To this 

 oft -asked question there can be no specific answer, 

 because so much depends upon the latitude, the 

 time of year and the condition of the plants. 

 Hammont gives the following " table of temperatures 

 at which the following plants are liable to receive 

 injury from frosts, compiled from information received 

 from horticulturists, orchardists and gardeners through- 

 out the entire Pacific coast. 



"The temperatures given are as nearly as pos- 

 sible those in contact with the plant itself. 



* A discussion of acclimatization, and other problems of climate and plants 

 may be found in "The Survival of the Unlike." 



t W. H. Ham mi. ii. "Frost, How and When to Prevent Injury Thereby," 1896. 



