50th Annual Market Day Thirty local vendors offer an array of plants, garden accessories and other merchandise at this community event hosted by the Cylburn Arboretum Association. Guests also have the rare opportunity to tour and purchase plants from Baltimore City's Greenhouses. From vegetables and herbs to native plants and hanging baskets, everything needed for a beautiful and productive city garden is available. Food, music, educational activities for children, and the opportunity to consult with master gardeners add to the fun. Free/Parking onsite $10.