Fertilizer for Hydrangeas

I believe there’s a specific one for them at Lowe’s. If not that, there’s an azalea fertilizer I use.

Brake rotor shavings. Go hit up your local auto repair shop that turns rotors.

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Never heard of brake rotor shavings but you certainly caught my interest. How do you apply and how do they affect your soil??

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Interested in this as well...

Bone meal

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My grandmother used to just drive an iron stake or rebar around her hydrangeas if she wanted to change the color.

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We did the same with rusty common nails. Dig around the plant, drop in the rusty nails and watch the flowers start changing color.

They were originally pink and started coming out two toned for a while and then finally pale blue entirely.

One of the ways to change the hydrangeas flowers from pink to blue is to treat the soil with Iron shavings or rusty nails.

I have 3 hydrangeas in pots. The flowers have been pink the last few years. I treated 2 of the plants with iron filings this past summer. Waiting to see if I get some blue flower on these plants. I take in these plants during the winter cold snaps and did not mark which plants I treated. So this spring will be a surprise which ones will have blue flower.