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).
It has a multitude of cultivars and varieties and is naturally a white flowering shrubby tree. In all varieties, its flowers occur before the leaves come out in the spring. Regretfully, the native dogwoods are plagued by several diseases and insects when stressed and require special care. Cornus kousa is the native dogwood of Korea and Japan. Unlike the United States dogwoods, Kousa Dogwood flowers after the leaves have started to emerge.