Bigleaf Hydrangea, French Hydrangea, Mophead 'Blue Danube'

I bought this plant back in March (1 gallon pot) and it was in bloom at the time. I chose it because it's a gorgeous deep lavender blue....Read More At the moment I have it in a large pot on my porch and I used an organic potting medium, it still has blooms but they are fading (now June). I still haven't decided where to plant it in our yard yet. I would love to plant it close to the house where I would get the most enjoyment from it. I'm in Texas and I get a lot of sun around the house and I don't want it to burn up. So I'm tempted to leave it in a pot on the porch in the shade.

From the "Encyclopedia of Hydrangeas," (Van Gelderen -2004), " a dense, dwarf shrub with spendid large mopheads. Flowers usually a beaut...Read Moreiful blue. Called "Danube Bleu" in French, "Blaue Donau" in German.

No other information given.