Apple 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
blank space | Silver Tip | Green Tip | Half-inch Green |
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10% kill | 15 | 18 | 23 |
90% kill | 2 | 10 | 15 |
blank space | Tight Cluster | First Pink (Pink) | Full Pink (Open Cluster) |
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10% kill | 27 | 28 | 28 |
90% kill | 21 | 24 | 25 |
blank space | First Bloom (King Bloom) | Full Bloom | Post-Bloom |
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10% kill | 28 | 28 | 28 |
90% kill | 25 | 25 | 25 |