In the Dooryard: Essential Weeds at Our Feet: Presentation & Salve-Making Workshop Rachel Mackow, owner of Wild Ridge Plants, shares her wealth of knowledge as she weaves together the ecology of common native and non-native plants with their modern and historical uses as food and medicinal remedies. The presentation is followed by a salve-making workshop. Time: 10 a.m. - 12 noon. Location: Frelinghuysen Arboretum, 353 Hanover Ave, Morris Township. Cost: $25 per person. Preregistration is required. To register, 973.326.7601.