Barking up the right tree
By The Twig - Well Seasoned, May 1 2017 10:00AM
As the weather warms up and dries out it's time to collect bark rubbings.
Bark is the outer protective skin of a tree. It prevents the vulnerable inner tissue from attack by disease, fungi or insects as well as insulating it from the elements. Each species of tree has a unique bark pattern – collecting and cataloguing rubbings of them is a great way to spend the day and to learn more about the species living near you. Although you can do it at any time of year, May is the first reliably dry month of the year and new leaves will be out on most trees by now, making them easier to identify.
You will need:
• A roll of masking tape
• Several sheets of strong white paper
• A pack of wax crayons
• A pen or pencil
• A dry day!
Tape a sheet of paper to the truck of your chosen tree. Peel the paper wrapper from one of your crayons. Rub the long edge of the crayon over the paper until the bark pattern shows. Try to keep all your strokes in the same direction. When you have a clear impression of the bark, carefully peel off the masking tape, remove the paper from the tree and use the pen to record the type and location of your tree.
Did you know…? The horizontal dark "dashes" seen on silver birch trees are called lenticels, and they allow the trunk to breath. When the lenticels become blocked, new bark from beneath grows, causing the older covering to peel off.