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).
Dogwoods could live to be 60 or 70 years old, providing they stay healthy. I know of some that are probably 40-50 years old now. Unfortunately, they have many maladies. They suffer from Downy and powdery mildews, which coat the leaves reducing sunlight, slowly choking/starving them to death.