Mulch killing weeds, Citrus from Seeds, and a Robot Weeder

Have you wondered how, or if, mulch kills weeds? Have you tried to grow a citrus plant from a seed? Ellen and C.L. discuss these topics, and answer Dianna's question about her kousa dogwood that isn't doing well. Plus C.L. tells Ellen and our listeners about a robot that weeds in gardens.   :28   Plant Noob:   Does mulch kill weeds?  6:47    Eat/Drink/Grow: Some considerations when growing citrus from Seed. 14:02   Check THIS Out!:    Tertill: a solar-powered, robot weeder. 18:13  Love Letters and Questions    From Dianna: "I purchased a kousa dogwood from a landscaper and they installed it for me."