My Long Island Brussle Sprout is thriving! It’s amazing what a little sun will do. Brussle Sprout is a type of brassicaceae, a part of the cabbage family, so they like cool weather and are heavy feeders! These guys are planted with horse manure compost and once a month are watered with an Epsom salt mix, I put one table spoon of Epsom salt into one gallon water. The magnesium helps the plant to absorb nutrients from the soil.