The annual self-guided Mt. Airy Learning Tree Hidden Gardens Tour in Northwest Philadelphia will be held from 10 a.m. to 3 p.m., June 8. Botanical enthusiasts have a chance to see some elaborate private backyard gardens that include native plantings, botanical exotica, ponds, garden ornaments and ornate outdoor rooms.

Tickets are $25 at MtAiryLearningTree.org. The tour starts with coffee and pastries at 6601 Greene St., Philadelphia. For more information, call 215-843-6333.