: Secondary electron image of a. human hair with a nanowire loop sitting on it. The diameter of the nanowire is equivalent to. the scale in the shale picture to the left. The. hair is about 60,000 nanometers in diameter.
Allergies come in different forms, so not everyone who has a pollen allergy is allergic to tree pollen. A palm tree allergy is indicative of your bodyâs reduced immunity to pollen, which can sometimes be genetic. When your body comes into contact with tree pollen, it releases histamine, the aggravator of common allergy symptoms. There are certain types of palm trees that donât exhibit pollen, such as Phoenix palms, so it is always important to identify the differences before planting any new trees in your yard.
Even hardy cold weather palms can suffer from a cold winter. Many owners of these palm trees protect them from winter winds with a greenhouse or a wire cage lined in plastic. The peacock palm is a cold-weather palm, but can only survive 24 degrees and warmer. It may need to be protected during the coldest winter months.