Tagetes tenuifolia. An intense citrus aroma fills the air when you brush by them along a path or in hanging baskets. Small single blooms make airy mounds above lacy foliage. Plant Signet Golden Gem marigold seeds in the spring and use the edible flowers in salads, desserts and fancy drinks. While all marigold flower petals are technically edible, Signet Golden Gem is by far the best-tasting marigold. As its colour might suggest, it has a faintly citrus flavour that actually enhances salads. Golden Gem is slow to bloom so start early. Bright lemon-yellow blooms flower until heavy frost. Consider this marigold for xeriscaping, as it has good drought resistance. Height: 40cm (15″).