Trees have begin to wake up at this time of year...partly due to the lengthening days (as well as warmer temperatures). A conservative application of some form of fertilizer at this time of year could be of benefit.

In regards to possible problems associated with frost...if that happens, it absolutely will NOT be because of fertilization. Our trees and shrubs are going to come out of winter dormancy regardless of anything you may or may not apply to the soil. A severe frost could still come at any time (remember the Easter freeze a couple of years ago?) and zap the daylights out of our early flowers or new spring growth.

It's the late summer/early fall fertilization that cause problems for the woody plants. Such applications may keep them from entering their fall shut-down, making them susceptible to winter injury.

Avoid heavy doses of anything; don't use fertilizer spikes; and know that compost is a terrific, slow-release form of nutrients, too. Be mindful, as well, that your trees may not even need fertilization at all. Less is best when it comes to our woody plants.

The single most beneficial thing we can do for our trees is to provide a 2-4 inch layer of mulch, in a wide swath around the tree. Mulch helps create soil environment conducive to root development...stronger roots equals more top growth. Never, however, pile mulch up against the trunk in a big pile, a 'style' so popular with uninformed landscapers.