Evergreen conifers drop their needles just like deciduous trees, but over a long period of time. "The difference is that with deciduous trees they do it all at once in a shorter time span," he said.

Conifer trees are pretty hardy, but they are still prone to turning brown. Here is what to do if you notice rust-colored needles on your conifer.

Though conifers may or may not lose their needles annually, most are indeed evergreen. Trees of this classification have needle-like or scale-like foliage and usually renew many leaves annually.

Rod Parke used to grow 253 kinds of hybrid tea roses. When he tired of all the spraying, he moved on to filling his North Seattle garden with ...