Description : my 3 year old wisteria hasn't gotten past the bud stage and its already June
Last Answer : ph should be 6.0-7.5,,,,,,,,,,,,,did you fertilize..................we had a frost in May 2 times............and very low temps could have effective it.............if you did not fertilize in spring before it rains the next time sprinkle a little dried horse manure around it and a spinkle of lime.