The Olmecs were the first major civilization in Mexico following a progressive development in Soconusco. They lived in the tropical lowlands of south-central Mexico, in the present-day states of Veracruz and Tabasco. It has been speculated that Olmec derive in part from neighboring Mokaya and/or MixeâZoque.
One of the most common types of mechanical injury to dogwoods is impact from lawnmowers. Injuries of this type can invite basal stem rot disease and insect borer infestation. Similarly, string trimmer impact can sometimes bruise or girdle the cambium (the vital layer of tissue under the bark).
Root and Butt Rot Diseases-The diseases in this category infect and kill roots and cause decay of the roots and trunks of trees. These diseases can seriously impair the structural integrity of the trees they infect resulting in total tree failure often with little advanced notice.oadstools, puffballs, dwarf benches and mushrooms are just a few of the names given to describe some of the fungi that can be affecting the health of your trees. Formerly thought of as a group of simple plants lacking chlorophyll, fungi are now classified as a separate kingdom of living organisms.