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The Gardens

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Production Greenhouse

Longwood Gardens' 30,000-square-foot, state-of-the-art Production Greenhouse Facility is the perfect marriage of beauty and brawn. High-tech systems power the 378' by 80' range of nine greenhouses, making it possible to produce exquisite plants year round under all conditions. Beneath the greenhouses lies a subterranean mechanical empire. Steam and condensate pipes run through tunnels that are spacious, well lit, and allow complete access by maintenance personnel.

Seven pump stations collect condensate for return to Longwood’s Main Boiler Plant, where three massive boilers fueled by oil or gas produce steam that travels through thousands of feet of pipe to heat the Conservatory, adjacent offices, and the Production Facility. Each greenhouse is equipped with its own computerized system that automatically controls temperature, bench and perimeter heat, snow melters, and devices for cooling and shading.

Displays & Upcoming Events

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Orchid Extravaganza

now through March 25

Explore a magical world of orchids where thousands of colorful blooms drape from walls, flow from baskets, and form captivating archways in artful displays.

Find out more

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What's in Bloom

A team of Longwood Volunteers gathers horticultural highlights from the Outdoor Gardens and Conservatory. Download a pdf of their top picks for the week, including photos and locations.

Find out what's in bloom

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International Orchid Show & Sale

March 23–25

Experience the American Orchid Society-judged show, take a tour, hear a talk, and find the perfect orchid to take home. In collaboration with the Southeastern Pennsylvania Orchid Society.

Find out more

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Light: Installations by Bruce Munro

Opening June 9

Experience Longwood Gardens in a whole new light through the evocative and imaginative art of Bruce Munro, British lighting artist.

Find out more