How To Take Care Of Hydrangea Macrophylla. Particularly with pot hortensias care must be taken to ensure that the substrate does not dry out due to the smaller volume of soil. Hydrangeas need moist but well drained soil to thrive.
Spread a fresh layer of organic mulch once each year in early spring. Plant your hydrangea in spring after the danger of frost has passed. As hydrangeas grow they can get very large.
Then cover the plants with a thick layer of leaves straw or mulch.
Hydrangeas need moist but well drained soil to thrive. Instead of trying to stick to a rule for watering hydrangeas it is better to water so the soil is moist at all times but not too wet. Damage and new growth on H. Water your container grown hydrangea plants by filling the pot to the brim with water letting it drain and repeating.