Peach/Nectarine 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 | Swollen Bud (First Swell) | Calyx Green | 1/4" green (Calyx Red) |
|---|---|---|---|
 |
 |
 |
|
| 10% kill | 18 | 21 | 23 |
| 90% kill | 1 | 5 | 9 |
| blank space | Pink (First Pink) | First Bloom | Full Bloom |
|---|---|---|---|
 |
 |
 |
|
| 10% kill | 25 | 26 | 27 |
| 90% kill | 15 | 21 | 24 |
| blank space | Post Bloom (Petal Fall) | Shuck Split |
|---|---|---|
 |
 |
|
| 10% kill | 28 | 28 |
| 90% kill | 25 | 25 |