SEPOS International Orchid Show & Sale

Friday, April 24, 12–6 p.m.
Saturday and Sunday, April 25–26, 10 a.m.–5 p.m.

Orchid Show

On April 24–26, 2015, the International Orchid Show will transform the Academy of Natural Sciences of Drexel University into a spectacular world of orchids. For three days only, the luscious fragrance of thousands of orchids from all over the globe will fill the Academy’s diorama halls. Colorful orchids arranged in stunning displays and brought to their prize-worthy peaks will delight orchid experts and novices alike.

  • Take tours with the experts of the Southeastern Pennsylvania Orchid Society
  • Attend lectures and talks on orchid cultivation for beginner and experienced orchid growers (see the list below)
  • Visit an extensive market to purchase plants, gardening supplies, and other treasures from all over the world
  • Enjoy delicious snacks in the Academy’s famous Dinosaur Hall
  • Take a behind-the-scenes tour of the Academy's Botany Collection


The International Orchid Show is presented in collaboration with the Southeastern Pennsylvania Orchid Society. For more information call 215-299-1167.

Orchid Show Hours
Thursday, April 23: Museum closed for Orchid Show setup
Friday, April 24: Special museum hours, noon–6 p.m.
Saturday, April 25–Sunday, April 26: 10 a.m.–5 p.m.

The Orchid Show is free with General Admission
Adults: $15.95
Children, Seniors, Military, and Students: $13.95
Groups of 10 or more: $12.95 per person (children $10.95)
Please call 215-299-1060 for group reservations.

The International Orchid Show is presented in collaboration with the Southeastern Pennsylvania Orchid Society.

Click here for a photo essay from this year's show.

2015 Lecture Schedule

Friday, April 24
3 p.m.
Phalaenopsis for Everyone
Susan Gange, Stony Brook Orchids

The “Moth Orchid” (Phalaenopsis) is arguably the most popular of all house plants. Phalaenopsis are beautiful, readily available, inexpensive, long-lasting, and available in an array of spectacular colors and patterns. They are truly user-friendly, and we think everyone should grow them! New Jersey commercial grower Susan Gange explains how and answers your questions.

Saturday, April 25
11 a.m.
Native orchids of Pennsylvania and New Jersey
Bob Sprague, Southeastern Pennsylvania Orchid Society

Everyone knows orchids don’t grow in Pennsylvania and New Jersey … or do they? North America is home to more than 200 species of wild orchids, and Pennsylvania and New Jersey boast over 50. They can be found growing naturally in forests, fields, and bogs. This lecture focuses on the intrinsic beauty of some of our rarest wildflowers, their unique life cycle and growing conditions, how to find them, and how to help preserve them.

Saturday, April 25
1 p.m.
Orchid Fragrance
Joanna Rossbach, Knut Rossbach, Dirk Braun

Flowers are fragrant not to please the olfactory sense of human admirers but to assure survival of the species by attracting pollinators. Many orchids exhibit fragrances that range from subtle to overpowering or sweet to vile, and each gives a clue to pollination strategy. At this show, plants will be judged by professional evaluators who specialize in the chemistry and appeal of fragrance for the sake of human enjoyment as well as commercial purposes. Join us to observe preliminary evaluation, beginning at 10:30 a.m. outside Butterflies! At 1 p.m. finalists will be moved to the Auditorium and the judges will choose the winners. The judges will explain the process, present the winners, and defend their selections. In addition, there will be a demonstration of how fragrance is collected for further analysis and the possible creation of commercially viable products.

Sunday, April 26
11 a.m.
Growing Orchids Successfully:
The Single Most Important Thing to Know

Bob Sprague, Southeastern Pennsylvania Orchid Society

Orchids have a reputation of being hard to grow. “Not so,” says Bob Sprague, as he debunks this popular myth in a brief but pointed talk illustrated with beautiful orchid photography. There is only one thing you need to know to grow orchids. (Actually, there are two.) Leave armed with the “secret formula” for successful orchid growing.

Sunday, April 26
2 p.m.
The 21st World Orchid Conference
Mary Jo Gilsdorf, Southeastern Pennsylvania Orchid Society

Held once every three years in an exotic port-of-call, the World Orchid Conference is commonly referred to as the “Olympics of Orchids.” It is the largest and most prestigious gathering of orchid growers, enthusiasts, hybridizers, and scientists on the planet and attracts exhibitors, vendors, and lecturers from six continents. Join American Orchid Society judge Mary Jo Gilsdorf as she recounts her participation in the 21st World Orchid Conference held in Johannesburg, South Africa. Then join her for an African wildlife “safari” featuring some of nature’s most impressive creatures.

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