How To Care For Hydrangeas. This includes choosing the correct hydrangea for your space planting watering fertilizing pruning and more. Hydrangeas should be planted in fertile soil after the last spring frost or before the first fall frost.
Add organic mulch underneath your hydrangeas to help keep the soil moist and cool add nutrients over time and improve soil texture. And if your flowers are looking sad Bladow suggests soaking the entire hydrangea in cool water for about 45 minutes. QuercifoliaPerhaps the most popular French hydrangeas have either mop heads of round dense flowers or more subtle and elegant lace caps.
Hydrangeas also benefit from an occasional boost of fertilizer once or twice a year in spring or summer.
In larger pots the soil stays moist for longer keeping your hydrangea well hydrated. Make sure to keep your arrangement out of direct sunlight. Also make sure that you keep them away from drafts and heat sources. Water is an important factor when you care for hydrangeas.