Welcome to the first instalment of our Ultimate Garden Cheat-Sheet. Over the next few weeks, I’m taking 10 gardening problems and showing you exactly how we handle them on our flower farm. Today, we’re tackling the #1 plant killer: Overwatering. Signs of Overwatering Common signs of overwatering are root rot (characterized by yellowing leaves and mushy stems) and yellow, droopy or mushy leaves. Overwatering may also be accompanied by a foul smell, which may be a sign the soil