Forest Green Parsley Seeds Heirloom Vegetable. Long, stiff, upright growing stems hold the dark green, finely cut and beautifully curled leaves well above the soil. This variety has broader leaves and is more flavourful than plain leaved parsley. Holds its fresh look and deep colour quite well and resists browning and bleaching. The best variety for garnishing and a superb ornamental in combination with flowers for use in containers and planters.