What to 'listen' for (Gardeners)

• Leaf tips that yellow from the edges in are a sign of too much salt from fertilizer, fluoride or soft (salty) water. Follow fertilizer directions to make sure the mix isn't too strong. Plants don't like a power drink. If the house water is salty (you'd need a water test to confirm this) or the plant is fluoride-sensitive, the solution is to give it bottled water. This sounds high-maintenance, but some plants prefer Evian.

Plants can be sensitive but not us.