Tree geeks are handy to have around at times.Sorry buddy. Sometimes I can't help myself. Lol that did sound all snooty fallooty didn't it?!. This concludes this episode of 'know your wood' hosted by yours truly, the tree geek.Yikes!! Tree science! Will there be a test on this at the end of the week?You're also seeing 'Ray' cells that will cross over the cambium from the phloem towards the heartwood. In a cross section they grow in a starburst pattern. Some trees have more than others. Oak and gum for instance, have lots which makes them more resistant to splitting than others like say Maple.
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