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PLUM Growth Stages and Critical Temperatures

 

Typical temperatures in Fahrenheit, at which 10% and 90% injury after 30 minutes exposure, is provided under each bud stage image.

To have a full crop of cherries requires well over 50% bud survival in most years, while apples, pears, and peaches may only need 10 - 15% bud survival

 

  Swollen Bud Bud Burst Green Cluster
  swollen bud bud burst green cluster
10% kill 14 20 24
90% kill 0 7 16
  White Bud Bloom Petal Fall
  white bud bloom petal fall
10% kill 26 28 28
90% kill 22 33 33