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Trees can explode when struck by lightning. [3] [15] [16] [17] The strong electric current is carried mostly by the water-conducting sapwood below the bark, heating it up and boiling the water. The pressure of the steam can make the trunk burst. [3] [17] This happens especially with trees whose trunks are already dying or rotting.
Trees can be girdled by climbing, twining, and ground-creeping (rampant) vines. There are several invasive species that harm trees in this way and cause significant damage to forest canopy and the health of ecosystems dependent on it. Oriental Bittersweet, Oriental Wisteria, and English Ivy all can damage and kill trees by girdling. [citation ...
In response to the unprecedented spread of bark beetles in the Rocky Mountains and other parts of the western United States, the U.S. Forest Service formed the Western Bark Beetle Research Group (WBBRG) in 2007—a collaboration between scientists from three research stations that pools knowledge and resources to better understand the threat and eventually develop a strategy to combat it. [10]
The damage, however, is done the first year or two that the new tree is in the ground even though the bark doesn’t start cracking and falling for another year or two.
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Individual trees can live for over 300 years. [ 4 ] The leaves are thick with a waxy texture, elliptical, 7 to 15 cm ( 2 + 3 ⁄ 4 to 6 in) long and 4 to 8 cm ( 1 + 1 ⁄ 2 to 3 + 1 ⁄ 4 in) broad, arranged spirally; they are glossy dark green above and a lighter, more grayish green beneath, with an entire margin.
Juniperus ashei (Ashe juniper, mountain cedar, blueberry juniper, post cedar, or just cedar) is a drought-tolerant evergreen tree, native from northeastern Mexico and the south-central United States to southern Missouri. The largest areas are in central Texas, where extensive stands occur.
The list of trees from which builders chose is horrifying by today’s standards. ... For the past 30 years I’ve boiled my list of recommended large shade trees for North Central Texas down to ...