I’ve been saving old potatoes to plant and they were growing before they hit the dirt. I have read warnings not to use supermarket potatoes for seed because of sprout inhibitors. It appears any of these have worn off of these spuds.
I use the trench method to plant potatoes. I dug a little trench and spread out the potatoes. I then planted each, sprouts up, about 3-4 inches deep. As they grow, I’ll cover in the trenches. When the soil is level, if there’s space between the rows, I’ll plant a companion crop. Probably basil, eggplants or marigolds.
My soil test results came back yesterday. I’ll eventually post the numbers. The soil pH in my community plot is very low, 5.8, which is perfect for potatoes. The soil needed a bit of nitrogen and phosphorus, but the potassium was good. I added a few cups of 6-6-4 fertilizer to the soil before planting. Now I can watch for sprouts.