Article: gardening; DIGGING IN; FERTILIZER FACTS; Some fertilizers are great, some aren't worth the container they're packaged in. So how do you tell the good from the bad? Here are answers to some frequently asked questions that will help you cut through the hype and raise healthy plants.(HOME & GARDEN)

Byline: JEFF GILLMAN

Q Do I need a fertilizer?

A If you're a composter and add an inch or so of completed compost to your garden every year or two, you probably don't need fertilizer. Fertilizer might give your plants a bit of a boost, but when compost is used regularly it typically provides all the nutrients most plants need.

Q Do I need to fertilize my trees if I've already fertilized my lawn?

A Probably not. The grass won't be able to take up all of the fertilizer that you apply. Some will make it through the ground to the roots of the trees in or near your lawn.

Q Should I add a high-phosphorus "starter" fertilizer when I plant?

A No. There are ...

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