Hydrangeas in Mexico
I recently planted three hydrangea macrophyllas in central Mexico close to Guadalajara. The climate is semi arid with horribly dry air. They get about an hour of morning sun and full shade for the rest of the day, and daily watering. However they have lost all leaves, they all turn brown and drop off. My plan is to dig holes in the dry soil larger than the root balls and filling in with better quality soil, kind of like containers in the ground.What is the best type of soil to use for hydrangeas and how can i humidify the air around them so they will grow. I've seen bags of coal-black soil which is like humus but im not sure wether this would be a good soil to use.