Fritillaries are a good choice for lightly shaded gardens. They prefer winter chill and cooler conditions, and often struggle where summers are dry and hot. They are also resistant to deer and squirrels as well as rodents. Plant in fall as soon as bulbs are available. Unlike most bulbs, fritillary bulbs should be spongy and soft-looking, rather than dry, when you plant them. Stalks are topped by a circle of large yellow, orange or red flowers that hang from a crown of glossy green tufts. crown imperial fritillary has musky fragrance that doesn’t appeal to everyone.