The Niagara Floral Center and Greenhouse at Opportunities Unlimited of Niagara will be offering a “hands-on” seminar: Succulent & Cacti Garden at 6:30 p.m. June 16 at the center, 2510 Niagara Falls Blvd. (between Sy and Witmer roads) in Wheatfield.Participants will be able to create their own assorted cacti and succulents planter. Class fee of $35 includes step-by-step instructions and all materials. No experience is necessary. RSVP by June 2.