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Old September 17, 2019   #25
svalli
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Join Date: Feb 2006
Location: Vaasa, Finland, latitude N 63°
Posts: 838
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Originally Posted by korney19 View Post
What low temps did you have when you planted them & throughout the season? I thought I read (or Tom told me) nights needed to be below 60F or something like that... I forgot the degree needed to form fruits...
Lows here when planting potatoes, can go below freezing, but hopefully not anymore after there is top growth. This year we had a frost even in July, which killed top leaves of some of my potato plants in the field, which is in a open area. Luckily my first planted patch was not affected.

If the lows have to be below 60°F, this area is the good for growing potatoes, since the average low does not get above that. Last summer there were some warmer nights, but also the colder ones too.

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