Time for hydrangeas

Around here, farmers plant them along the walls to keep the cows from jumping over them. There is a dark purple one that is kind of nice.

I love hydrangeas! Aren't they marvellous? A neighbour who was moving cut up the clumps she had to take some with her and had so many roots that she gave me some. I have 5 plants in various places to see how well they do in winter. All five are thriving. Mine tend to a pink tinge. Are there any viburnums nearby?

Wilie, there are several shades of blue and purple to a very light rose shade here. Researching about it I discovered that has to do with the acidity of the soil. For now I do not intend to add anything to the soil, because it is very fertile. Then mine will remain the color that nature has offered.

Lori, I also love the hydrangeas. Here in Brazil, we usually prune the hydrangea from May to August. The pruning can be only of the flowers that have already dried, or more radical leaving only of 30 to 40cm of height of the ground. In the next pruning I will be able to spread new seedlings around the land. And, I plan to plant along the fences to have a well-flowering garden in the spring and summer.
I researched viburnums and I do not think I've seen them in gardens or flower shops, but I'll look.

Thank you both for the comments

I would have thought that soil type has a lot to do with color, but a neighbor has a dark purple one planted in the ground right next to some blue ones, and they are too lazy to put any type of soil conditioner on them (they are too lazy to mow the grass more than once a year).

Wylie,
I posted a photo of the neighbor's hydrangeas. They are growing wild. As you will see, all of the same color. The hydrangeas along the roads also have the same bluish color.
One of my friends said she put eggshells in some to make them pink.

Nice looking plants! It's the acidity of the soil that makes them change colour. Acid soil produces blue flowers while alkaline soil will produce pink flowers. The grade of colouring will then depend on the amount of acidity or alkalinity there is in the soil, more acidity=deeper blue, less acidity=lighter blue, more alkalinity=deeper pink, less alkalinity=lighter pink.

I believe white Hydrangeas are unaffected by the pH of the soil.