How To Care Hydrangeas In Pot. Choose a large enough pot for the mature size of your specific hydrangea at least 18 inches in diameter. Gently firm the soil around the roots to eliminate air pockets.
Plant the hydrangea at the same level that it was in its original pot that is dont plant it deeper or higher than it was already growing. When the top inch or so of the potting mix feels dry water your hydrangea thoroughly. Put the pots in an area that receives morning sun light and shade in the afternoon to optimize growth.
Some varieties are better suited to specific potting environments.
Top us the container with mulch. Hydrangeas in the garden like full sun but this dries out the soil in containers much too quickly. Use a mixture with vermicompost and peat which will give the plant the nutrients it needs. Drainage holes will allow excess water to drain properly.