Since the 1860s the Norway spruce has been the traditional tree, but now firs, less prone to needle-drop, have become fashionable.
Nests are usually built in deciduous trees, such as aspen, alder, cottonwood, or willow, but they may also be in firs or other conifers.
For spruces, firs and Douglas-fir, three or more years are usually needed to produce high quality planting stock.
As firs, redwoods, and oaks matured in her Hillsboro, Oregon, landscape, she started sculpting her many perennial beds.
While we don't have tall trees, our neighbors do, and the firs and oaks that surround our property drop acorns and provide homes for jays, woodpeckers, robins and sparrows.
Conifers are seed plants; they include pines, firs, yew, redwood, and many other large trees.
Spruces, firs and Douglas-fir can be sheared with good results from late July or early August and continuing until just before new growth starts the following spring.
The vista beyond was dotted with leafless trees and throngs of firs and pine.
The woodland grant scheme was introduced in 1988 to encourage landowners to switch from planting commercial plantations of foreign firs, such as Sitka spruce, to a mix of native pine and broadleaf.
I've had my share of disasters from grasshoppers, including having the bark on my young evergreen firs eaten when there was still lots of other forage.
As we approach Aberdeen the sun comes out - blue sky, white waves, yellow gorse, green firs and fields.
As you ascend its mountains, you travel through rich forests of oak, juniper, and cypress in the canyons, and on the higher slopes, you'll see pines, firs, and aspens.
It was a wilderness of cathedral-like redwoods, of ferns and huckleberries, oaks and stately firs, and a myriad of flowers and wildlife.