A tree's age can be easily determined by counting its growth rings, as any Boy or Girl Scout knows. Annually, the tree adds new layers of wood which thicken during the growing season and thin during the winter. These annual growth rings are easily discernible (and countable) in cross-sections of the tree's trunk. In good growing years, when sunlight and rainfall are plentiful, the growth rings ...
Burls, spherical woody growths on the trunks of spruce, birch and other trees, are commonly found throughout wooded parts of Alaska.
In interior Alaska and some parts of Canada, witches' broom (an abnormal outgrowth of branches of the tree resembling the sweeping end of a broom), is commonly seen on black and white spruce trees. From late fall through the winter, the brooms are dark brown or "dead"looking and are often mistaken for birds' and squirrels' nests.
Yahoo: 16 Fast-Growing Trees You Should Plant In September To Transform Your Landscape
16 Fast-Growing Trees You Should Plant In September To Transform Your Landscape
Real Simple on MSN: 10 fast-growing trees that will give your home natural privacy
Who wouldn't love to grow a mini orchard housing diverse fruit trees to keep us and the pretty birds visiting our backyards satiated year-round. Sadly, with even the youngest seedlings costing over ...
Yahoo: This Fast-Growing Tree Is Perfect For Privacy Needs And Isn't Picky About Soil
This Fast-Growing Tree Is Perfect For Privacy Needs And Isn't Picky About Soil
EurekAlert!: Fast-growing trees are taking over the forests of the future and putting biodiversity and climate resilience under pressure
Fast-growing trees are taking over the forests of the future and putting biodiversity and climate resilience under pressure