The best way to raise Hydrangea is to use the fertile, loose and well drained sandy loam with neutral or alkaline soil. It is more afraid of standing water, so we must choose the soil with certain drainage capacity.
It is a temperate plant, warm like, has a certain cold resistance, but not high temperature. When the temperature is high in summer, you need to move it to a place with low temperature or take other measures to cool it.
It prefers half sunshine or half shade growing conditions. It's very afraid of strong sunlight. When the sun is too strong, it needs to shade for it
It likes wet growing conditions, but it can't grow normally in the soil with water.
