Genus Dryopteris Species erythrosora Cultivar Common Name Autumn Fern Patent ID Height 18 to 21 Inches Spread 15 to 18 Inches Habit Dense clump. Moderate growth rate. Zone 5 to 8 Culture Partial to full shade. Flower Flower Color Foliage Fronds are coppery red when they first emerge and mature to a dark, glossy green. Evergreen. Categories: Fern Shade Perennial Description Excellent fern for mass planting. Best used in a woodland setting.