EZ-GRO Hydrangea Fertilizer, Liquid Plant Food 21-7-7 with Aluminum Sulfate for Hydrangeas - Perfect for Blue Flowers | Rhododendrons & Azalea Fertilizer, Ideal Hydroponic Nutrients - 1 qt (32 oz).

OBSESSED! Maintaining the PH to keep the blue is a full-time job. I feed both my hydrangeas this every 7 days. I am being aggressive because I want the vibrate blue. The first picture is when I brought her home and she started turning color on me. The EZ grow gives you results over night. You do need to pair it with another product for long term results but there is NOTHING on the market that can touch what this product does. It is the reason you see the vibrant blue centers and the glowing violet.

very little bottle.

Seems to be a good product. The only problem I had was shipping damage twice. It was just a plastic jug in a bubble bag from Amazon and it got punctured so it leaked almost all out. Why did they deliver it that way. Replacement order leaked out of jug seam. Should’ve been boxed.

Omg!! Two applications finally turned my endless bummer hydrangea blue!! Ive been using epsoma acidifer every year for a decade never got blue flowers . Two applications of this turned them pale blue. So im going to keep applying. As i did start after first flush of blooms and the ones still in bud look bluer than the oldest blooms. So it must wirk better on less developed flowers.

Time will tell

What I ordered

Keeps your hydrangeas super healthy but not blue. Treated every 2 weeks prior to blooming and still came out pink. Bummed.

I use this product prior to going on vacation. When I came back after two weeks, the plants were in full bloom and had vibrant color.