Reuters: Fact Check: Viral clip shows tree catkins, not ‘rain of worms’ in China - scientists
A viral clip online likely shows the catkins, or flower spikes, of poplar trees covering cars in northern China, not a “rain of worms” as social media posts and some news reports have claimed, experts ...
Fact Check: Viral clip shows tree catkins, not ‘rain of worms’ in China - scientists
NOLA.com: What's the greenish stuff falling from oak trees? They're catkins, or male flowers. Use them as compost.
What's the greenish stuff falling from oak trees? They're catkins, or male flowers. Use them as compost.
Interior Alaskan forests have only six native tree species: white spruce, black spruce, quaking aspen, balsam poplar, larch (tamarack) and paper birch. Northern Canadian forests have all of those, plus jack pine, balsam fir and lodgepole pine. Since northern Canada and interior Alaska share the same grueling climate and extremes of daylength, why are the Canadian tree species absent from ...
It is common for people in interior Alaska and corresponding areas of northwestern Canada to use the name cottonwood when referring to one widespread variety of deciduous tree.
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 ...