'Bonanza Gold' French marigold puts a smile on gardeners' faces because of its bright gold color, tidy compact shape, and low-maintenance care. Perfect along borders or in container planters and hanging baskets, marigolds don't need much more than regular water and a sunny location to thrive. Deadheading spent flowers and fertilizer will keep new blooms coming up into fall. Marigolds have a distinct odor that may or may not be pleasing to gardeners, but it seems to keep this annual off the preferred list of foods for deer, and it tends to repel unwanted insects. Unfortunately, slugs seem to love the finely cut foliage, so keep an eye out for these invaders.