My flowering Pear tree has a large swollen area at the base of the trunk. Is that normal?
BOB: Various ornamental plants are chosen for their best characteristics, such as beautiful flowers, sturdy branching or strong root systems. Since these characteristics aren’t always present in the original plant, nurseries use ‘grafting’ to combine various parts — one plant part is surgically attached to another, or ‘grafted.’ In the case of your flowering Pear, the swollen area at the base of the trunk is where the trunk is grafted onto a different root system. This is known as a ‘bottom graft.
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