354 Fruit-growing in Arid Regions 



flower-buds are seriously injured by temperatures lower 

 than 20. Apple or pear buds far enough advanced to 

 show the color at the tips are usually only slightly injured 

 by temperatures as low as 25. Apples or pears in bloom 

 and after the fruit is set will seldom withstand tempera- 

 tures lower than 28, if of long enough duration to freeze 

 the tissues solid. Cherries, apricots, and most of the 

 plums will require about the same protection as peaches. 

 Native plums in bloom or with the fruit set will often 

 endure a temperature of 25. 



Storing Heaters. After the orchard heaters have been 

 burned, they will probably rust badly if not well cared for. 

 They should be placed in attics rather than in cellars and 

 should be dipped in oil before storing. Smudging oil will 

 do very well for dipping. 



