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.
Any grass-like plant that is grown in a landscape with perennials and shrubs can be considered an ornamental grass. Ornamental grasses can add intriguing color and texture to the landscape. Many ornamental grass species are increasing in popularity because of their low maintenance requirements and limited water use.