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“The last frost date in Seattle can be as early as March 22, but to be on the safe side, April 15-20 would be more definitive.”
Seasonal milestones
This utility page is for calculating when to plant. This allows to you to predict those milestones for your area/year based on almanacs/local info, then calculate when to plant different vegetables.
For PNW:
Seasonal milestones
Relative to
Estimated date
first fall frost
10/30/2021
last spring frost
4/11/2021
There are no rows in this table
Dates relative to frost
Weeks before/after
Milestone
Date
000
-12last spring frost
1/17/2021
000
-11last spring frost
1/24/2021
000
-10last spring frost
1/31/2021
000
-9last spring frost
2/7/2021
000
-8last spring frost
2/14/2021
000
-7last spring frost
2/21/2021
000
-6last spring frost
2/28/2021
000
-5last spring frost
3/7/2021
000
-4last spring frost
3/14/2021
000
-3last spring frost
3/21/2021
000
-2last spring frost
3/28/2021
000
-1last spring frost
4/4/2021
000
1last spring frost
4/18/2021
000
2last spring frost
4/25/2021
000
3last spring frost
5/2/2021
000
4last spring frost
5/9/2021
000
5last spring frost
5/16/2021
000
6last spring frost
5/23/2021
000
7last spring frost
5/30/2021
000
8last spring frost
6/6/2021
000
9last spring frost
6/13/2021
000
10last spring frost
6/20/2021
There are no rows in this table
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