511 and Hydrangeas
I have a few compact mop hydrangeas to plant in 1/2 resin wine barrels. I have drilled numerous drain holes and they will be sitting on a gravel bed, not earth.
Two questions, should if raise them up on bricks for air circulation etc and will they survive in the 511 or should I use more of a potting mix. (And if so what do you recommend?)
If I use the 511 would like to avoid the lime to keep some on the pinkish red range and is this ok?
Thanks for any help!