By Naomi Judd
Marigolds are an example of a hardy and dependable annual that ages well. They make great borders, are a lovely addition to mixes and window boxes, and come in a variety of autumnal colors including mahogany, rust, orange, yellow, gold and primrose. For this reason, they are often used for color-themed gardens. Decide when to sow the seeds. Many annuals are sown in early spring, but marigolds...