DOCUMENTATION OF A COLD SPRING IN NORTHERN MAINE. Through foresight, Soil Temp records have been kept for 25 years (averages depicted by the Black line) at Aroostook Farm, the Potato Experiment Farm in Presque Isle.
The Blue line documents this Spring’s cold start as monitored on Aroostook Farm.
The Red dots are the readings we’ve been taking here in Bridgewater (6″ depth at 7am).
The soil is on the dry side and that can cause soil temps to fluctuate quickly. Our forecast is for a warmer week ahead.
Wound healing on the cut face of a potato does NOT occur below 45oF. So, cut seed in cold ground can rot, especially if it turns wet.
As organic farmers, we practice moderation and begin planting when the soil temp hits 50oF, generally about May 18-20. Caleb, Megan & JIm