Brain disorders can also have an effect on the display of delta waves. Parkinson's disease, schizophrenia, and narcolepsy are all characterized by changes in delta wave activity. Some drugs and chemicals have been shown to impact the brain's delta waves.
Pruning advanced ornamental trees. Now's the time... Generally speaking an ornamental tree is one that is grown for its decorative looks and not for food. Winter is the perfect time to prune deciduous ornamental trees, as their structures are dormant. Inside the tree though, important processes are underway.
Ornamental grasses, like lawn grasses, are also classed as cool or warm-season. Cool season grasses begin new growth in fall or winter and bloom in spring or early summer, but go dormant or decline in appearance during the summer heat. Most ornamental grasses for the South are warm season growers.