What commonly causes injury to the cambium layer of a plant?

Damage to the cambium layer of a plant is commonly attributed to physical injuries. The cambium is a vital tissue responsible for the growth of new cells, which facilitate the increase in the thickness of the plant's stems and roots. When wires and lawn equipment come into contact with the cambium, they can cause significant disruption to this layer, which can hinder the plant’s ability to transport nutrients and water, ultimately affecting its growth and health.

In contrast, while natural shedding of leaves and excessive watering can impact a plant’s overall health, they do not directly injure the cambium layer. Heat exposure may cause thermal stress, but it is less likely to inflict immediate physical damage compared to mechanical injuries. Thus, physical interaction with tools and equipment is the primary concern for cambium health, making it crucial to exercise care in managing landscapes and gardens.