I have 2 endless summer hydrangeas and one forever and ever blue hydrangea. I am in southeastern Michigan and we have had brutal winters for the last 2 seasons. Needless to say the hydrangeas died back to the ground. When and what do you recommend using so that I get blooms. The one is in a Western exposure but gets late sun after 3pm and it flowers the most but most of the blooms are at the bottom of the bush. Any thoughts on that? The forever and ever only has one bloom this year and it gets morning sun until about noon and then is in shade. The other endless summer gets sun until 1 pm. It is just now making flowers which is late and so far only about 6 blooms are coming. We have had an exceptionally rainy spring/summer so far. All were fertilized in spring when the new growth started emerging and were not cut back until I could see which stems to cut to the ground. I would like to add either spray and grow or the perfect blend mix next year so any of you who have had success please let me know how to use it to increase bloom production. Thank you in advance for any advice.