Our Experts

Bernard F. Pettit

Horticulture and Operations Manager, Meadowbrook Farm

Expertise: Alpine plant propagation and culture, rock gardening, making and planting troughs, dwarf conifers, bonsai, patio pots, annuals, perennials, trees and shrubs

Nancy O’Donnell, ASLA

Director, PHS

Expertise: Landscape design, green design, small-space gardening, native plants

Flossie Narducci

Education Activities Manager, PHS

Expertise: Urban gardens, front-lawn vegetable gardens, garden contests, gardening with children/children’s gardening expo

Sally McCabe

Project Manager, PHS

Expertise: Artificial light gardening, basic gardening/seed starting, Christmas plantings, urban gardening, community gardening, container gardening, dried flowers/crafts/wreaths, environmentally friendly gardening, flower arranging, growing fruit, gardening with children, growing herbs, houseplants, mulch, organic gardening and composting, propagation, soil types/fertilizer, vegetable gardening, water conservation/drought, school gardens

Mindy Maslin

Project Manager, Tree Tenders, PHS

Expertise: Tree identification, trees in the Delaware Valley, proper watering in the garden, drought, planting trees, tree care, bare-root trees, community engagement, urban forestry

Sam Lemheney

Vice President, Chief of Shows & Events

Sam directs the planning and creation of the major events produced by PHS including the PHS Philadelphia Flower Show, the largest flower show in the U.S. Sam is a judge for flower shows in Singapore, Japan and South Korea, and has judged the floats at the Tournament of Roses Parade in Pasadena, California.

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Bob Grossmann

Senior Director, Vacant Land, PHS

Expertise: Vacant land stabilization, benefits of greening, economic and environmental benefits of greening, parks revitalization, public landscapes, community gardens, urban tree canopy restoration, vacant land management, storm water management projects, and open space planning

Eileen Gallagher

Citywide Project Manager, PHS

Expertise: Community gardening, urban gardens, food production, sustainable agriculture Professional Member: American Community Gardening Association, Longwood Gardens Professional Gardener Alumni Association, and Thresholds, a Delaware County, Inc.-based non-profit that teaches decision-making skills to inmates in Delaware County prisons

Janet Evans

Senior Manager, PHS McLean Library

Expertise: History of PHS and the Philadelphia Flower Show, gardening and urban greening information resources (databases, books, web sites, literature) rare gardening books, garden and landscape history, gardening book groups, book recommendations.

Tammy Leigh DeMent

Parks Project Manager, PHS

Expertise: Community engagement, urban park revitalization Member of Philadelphia Parks Alliance

Glenn Ashton

Gardener, Meadowbrook Farm

Expertise: Attracting butterflies and hummingbirds to the garden, drought tolerant plants, native plants, unusual annuals and perennials, organic gardening, flower gardening, composting, urban gardening, shade gardening, garden design, plants for wet places, fall color, outdoor container gardening