Hello All! I am planting Jersey Knight Asparagus for the first time. I have an above ground garden bed that is 4' X 12'. I have read that the plants need to be 12" apart but I would like to put in 2 rows down the side and read that the rows need to be 4' apart. Do you think it would be ok to plant straight down along the sides of the garden? That way they would be close to the required 4'. I would love to hear from anyone who has planted this in an above ground garden...Thanks!