Even though hydrangeas require more water than some other shrubs, they don't like to be over-watered. It is best to have moist soil and not wet soil. One reason hydrangeas get over-watered is when they wilt in the afternoon sun. Our gut reaction is to run out and douse the plant in water, but STOP! That's not always the best option. Over-watering can actually prohibit future bloom production. Watch the video above for tips on watering hydrangeas!