Tagetes sinuata: half-hardy, IZ ft., golden yellow; continuous blooming, with elegant foliage.
They also seems to like tomatoes, so she plants French marigolds and tagetes among the plants.
Tagetes will flower in Winter but to keep whitefly away it is the dying flowers that are needed - these give off vapors.
Tagetes - The French and African Marigolds have long been favourite garden flowers.
Tagetes Signata - Allied to the French Marigold, but has much smaller flowers, either double or single.