HORTICULTURE. 



99 



TEMPERATURES INJURIOUS TO PLANTS. 



(U. S. Dept. of Agriculture.) 



The following table shows the temperatures at which the 

 plants mentioned are liable to receive injury from frost. 

 The temperatures are, as nearly as possible, those of the 

 air in contact with the plant itself. 



Plant or Fruit. 



Almonds 



Apples 



Apricots 



Asparagus 



Bananas 



Barley 



Beans 



Beets 



Cabbage 



Cantaloupes 



Cauliflower 



Celery 



Cucumbers 



Cymlings or squash. 



Flowers * 



Grapes 



Grape-fruit 



Lemons ... 



Lettuce 



Mandarins 



Oats 



Okra.. 



Olives 



Onions 



Oranges + 



Parsnips .... 



Peaches 



Pears 



Peas 



Plums.... 



Potatoes: Irish 



Sweet 



Prunes 



Radishes 



Shrubs, trees, or roses. 



Spinach 



Strawberries 



Tangerines 



Tomatoes 



Turnips 



Watermelons. 



Wheat 



Walnuts, English 



In Bud. 



28 

 27 



30 

 29 



31 



32 



3^ 



31 

 31 

 31 

 30 

 30 



30 



29 



29 

 30 



3^ 



30 



26-:jO 



28 

 31 



30 



In 

 Blossom. 



30 

 29 



31 

 29 



31 



29 



31 



32 



31 

 31 

 31 

 31 

 31 

 31 



31 



31 



31 



30 

 29 



30 

 31 

 30 

 31 

 31 



2a-32 



28 

 31 

 31 



InSetting 

 Fruit. 



30 

 30 

 32 

 29 

 32 



31 



31 

 31 

 30 

 31 

 31 



31 



31 



31 



30 

 29 



30 

 31 

 30 

 31 

 3' 



28 

 31 

 31 



31 



31 



At Other 

 Times. 



28 

 26 



30 

 26 



31 



25 

 15-27 



30-31 

 20-27 



28 



32 



30 



30 



28 



28 



28 

 12-28 



38 



31 

 ji8t 



(24§ 



2iJ 

 J26I: 



27 



29 

 28 



2S 

 29 



31 

 31 

 29 



25 

 30-26 

 21 

 30 

 28 



31 



26 



28-31 



28 



* Depends on variety. 

 $ Ripe. § Green. 



t Injured at 2 higher if continued 4-6 hours. 



