Fresno, California / Plum
Total Chill:
56
(Feb 28)
Day 119 / 135 (88%)
Current Season
Total Chill:
56
(Feb 28)
Method: Dynamic/Portions Model
Season: Nov 01, 25 - Mar 15, 2026
Key Freeze Dates (32°F)
Last Freeze:
10%: 01-06
50%: 02-04
90%: 02-24
10%: 01-06
50%: 02-04
90%: 02-24
First Freeze:
10%: 11-25
50%: 12-07
90%: 12-20
10%: 11-25
50%: 12-07
90%: 12-20
Chill accumulation tracks the cold exposure needed for dormant fruit trees and plants to break dormancy and bloom properly in spring.
Thresholds mark specific chill values when dormancy requirements are typically met, with crossing dates showing when your season reaches each milestone.
Thresholds & Notes
Accumulation Begins
10
Chill Hours
Nov 30, 2025
|
Dec 1, 2024
|
Dec 11, 2023
|
Nov 21, 2022
Dormancy establishment. Central Valley's mild fall delays chill vs northern regions.
Mid-Accumulation
25
Chill Hours
Dec 19, 2025
|
Jan 11, 2024
|
Dec 29, 2024
|
Dec 17, 2022
Deep dormancy. Pruning window for shaping and dead wood removal.
Minimum Requirement Met
45
Chill Hours
Jan 28, 2026
|
Jan 31, 2025
|
Mar 3, 2024
|
Jan 17, 2023
Low-chill Japanese plum varieties satisfied. Monitor for early bud swell.
Full Requirement Met
55
Chill Hours
Feb 22, 2026
|
Mar 5, 2025
|
Jan 30, 2023
Optimal for uniform bloom. Cross-pollination planning critical.