» Institute of Garden Design    Home-study course in garden and landscape design, offered in US and UK English versions.    http://www.inst.org/gd/

» Mid-Atlantic Horticulture Short Course    Annual event sponsored by the Virginia Horticultural Foundation, with programs for professionals as well as home gardeners. Overview of workshops and speakers.    http://www.mahsc.org

» The English Gardening School    Short courses, diploma programs, and distance learning opportunities at the Chelsea Physic Garden in the UK. Garden design and care, botanical painting, and creative workshops.    http://www.englishgardeningschool.co.uk/

» The New York Botanical Garden: Continuing Education    Offers classes about plants, gardening, commercial horticulture and landscape design.    http://www.nybg.org/edu/cont_ed_cat.php