Trees supply leaves with water because of a decrease in hydrostatic or water pressure into upper, leaf-bearing parts called crowns or canopies. This hydrostatic pressure difference "lifts" the ...

All tree leaves exhibit margins—the blade-like edges of the leaves—that are either serrated or smooth. Leaf margins can be finely classified based on at least a dozen unique characteristics.

There are several good insecticides that can be spraying across the lawn, groundcovers, low shrubs, tree trunks, patio surfaces, walls of your home, and all other areas that might harbor chiggers.

You should also check the underside of the leaves for any pests such as aphids or spider mites. Environmental stress such as too much sun or high temperatures can also cause dark spots on basil.

You should also check the underside of the leaves for any pests such as aphids or spider mites. Environmental stress such as too much sun or high temperatures can also cause dark spots on basil.

From fungal disease to hungry bacteria, slugs and insects, plenty of pests want to munch on your garden. Here's how to protect your plants.