Ours are planted in the garden and in pots on the southern side of the house and thrive. Pretty much ignored and no issues. Temperate Climate (Lithgow NSW)

My grandma used to plant 1 and 2 cent pieces under hers to change the colours of them! Ask at Bunnings, they will know

A chat with a staff member at a nursery might be useful?

Healthy hydrangeas are so beautiful in a garden. I follow the instructions for growing plants.

I did grow a plant that had partial sun but you have to watch you don’t over water as that was one thing I learnt.

Generally, hydrangeas prefer partial sun. Ideally, they will be given full sun in the morning, with some afternoon shade to protect from the hot midday sun.
Deeply water 3 times a week to encourage root growth. Bigleaf and smooth hydrangeas require more water, but all varieties benefit from consistent moisture. Use a soaker hose to water deeply and keep moisture off the flowers and leaves. Watering in the morning will help prevent hydrangeas from wilting during hot days.
If you’re growing hydrangeas, use coffee grounds to affect their color. Coffee grounds add extra acidity to the soil around hydrangeas. On a chemical level, this increased acidity makes it easier for the plant to absorb naturally occurring aluminum in the dirt. The effect is pretty blue clusters of flowers.
If you want pink hydrangeas, crushed eggshells may be one way to get them. Eggshells will slowly break down and reduce the acidity of your soil—making it harder for hydrangeas to absorb aluminum
To increase the acidity of your garden’s soil, use vinegar! For each gallon of water in your watering can, add one cup of white distilled vinegar and pour on your hydrangeas. The acidity of the vinegar will turn your pink hydrangeas blue or keep your blue blooms from turning pink

First use your used tea bags dig them in the soil to stop bugs from attacking them and then use ground coffee you can get buckets of them from your local coffee store . l do this to most of my plants and they are looking Beautiful now all ready for spring

Not sure if you have Tim’s garden close to you but they will probable help you.