Thirty species of aromatic perennials make up this genus. They are known for their long-lasting flower spikes and ability to tolerate heat and early frosts. Hummingbirds, bees, butterflies, and other insects love them. Some are native to the U.S.
LIGHTING REQUIREMENTS: USDA hardiness zones: 6 through 9
CARE INSTRUCTIONS WATER: Water the plant lightly immediately after planting, providing just enough moisture to saturate the roots.
FERTILIZER: Apply a balanced, all-purpose fertilizer every year in early spring. Apply the fertilizer at the rate suggested on the container. Water deeply after fertilizing to prevent burning the roots.
FLOWERING: Blooms in warm temperature.
SOIL: Use well drainable soil.
DISEASE: Generally trouble free, but mildew and rust may affect leaves in dry weather. Downy mildew and other fungal leaf diseases are less common.