when to plant a brussell sprout plant in southern wisconsin

Question

We tried to grow brussell sprouts for the 1st time this year. The plant grew nicely but the sprouts never got bigger than 1/2 inch. Many being loosely formed. We planted June first. From my understanding we probably had too much heat. I was wondering if you could tell me when would be the best time to plant.

Answer 1

These articles should help you find a solution: https://www.gardeningknowhow.com/edible/vegetables/brussels-sprouts/how-to-grow-brussel-sprouts.htm
https://www.gardeningknowhow.com/edible/vegetables/brussels-sprouts/brussel-sprouts-produce-loose-leafed-poorly-formed-heads.htm