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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 ...
By that time, there’s not much you can do but wait to see if the tree can heal itself. In the future, however, new trees should always have their trunks protected with paper tree wrap for the ...
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Almost all burl wood is covered by bark, even if it is underground. In some tree species, burls can grow to great size. The largest, at 26 ft (8 m), occur in coast redwoods ( Sequoia sempervirens ) and can engirdle the entire trunk; when moisture is present, these burls can grow new redwood trees.
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Young bark is reddish-brown and smooth. As it matures, it becomes a dark, dusty gray or brown and takes on a shredded texture. Yellow thorns up to one inch long appear on the young branches. The leaves are about 3–6 in (7.5–15 cm) long, fine, and bipinnately compound. They fold closed at night.
Rubber tapping in Indonesia, 1951. Rubber tapping is the process by which latex is collected from a rubber tree.The latex is harvested by slicing a groove into the bark of the tree at a depth of one-quarter inch (6.4 mm) with a hooked knife and peeling back the bark.