New York City, is one of the nation's most renowned entertaining, gardening, and lifestyle experts. His definitive and recently reissued book, The Art of The Party, newly from Gibbs Smith Publishers, is known widely as the party-planners bible. Anyone who has read his informative columns in Elle Décor, caught one of his frequent television appearances, or attended one of his fascinating lectures on entertaining or garden design, is familiar with his uniquely imaginative talent.

Both his remarkable event and garden designs have been featured in all major shelter, garden and lifestyle magazines, including Architectural Digest, W, House & Garden, House Beautiful, New York Magazine, Manhattan, Inc., Horticulture Magazine, Town & Country, and Garden Design. Clients have included Presidents Ford, Nixon, Reagan and Clinton, with events in the White House, luminaries of stage and screen, leaders of industry, countless brides, and the country’s largest and most prestigious corporations and non-profit institutions.

He is in constant demand as a visionary garden designer and lecturer, with major garden projects in progress across the country, and is the founder of Hortulus Farm Nursery, one of the nation's leading greenhouse and perennial operations and multiple award winner at the Philadelphia Flower Show (the nation’s largest), including the coveted PNC Bank award for excellence in design.

Renny serves on the boards of P.S. 1 / MOMA, The Brooklyn Botanical Garden, and The Heritage Conservancy of Bucks County, PA.