Signet marigold is a cutie-pie and a powerhouse bloomer that edges borders and fills containers with bright flowers and delicate foliage. Stake early with short, twiggy brush to give some support in richer soils, and they will reward you with perfect mounds of bloom in summer. In addition, they attract beneficial ladybugs and hoverflies into vegetable gardens. Pinch when seedlings reach about 4" tall to encourage bushiness. Deadhead or shear lightly for new waves of bloom. The edible petals are flavored of tarragon with a spicy kick. Pinch off the white part that joins the stem, as it tends towards bitterness. People with floral allergies should be cautious.