21st Annual International, American Society of Botanical Artists, 
Glynor Gallery, Wave Hill, New York

Solo Exhibition, ‘Response to Nature: The Watercolors of P. A. Kessler', 
Coastal Discovery Museum, a Smithsonian Affiliate,  South Carolina 

Solo Exhibition, ‘Response to Nature’, 
Walter Greer Gallery at the Coastal Carolina Arts Center, South Carolina 

Art Imitates Life Botanical Art, 
Johnson & Johnson World Headquarters, New Jersey 

The III & IV Annual International Juried Botanical Art Exhibit, 
The Horticultural Society of New York 

Flora 2000 ASBA International Exhibition, 
Longwood Gardens, Kennet Square, Pennsylvania 

7th International Exhibition of Botanical Art, 
Glynor Gallery, Wave Hill, New York 

7th International Exhibition of Botanical Art, 
Hunt Institute for Botanical Documentation, Carnegie Mellon University, Pennsylvania 

“Art and Flower Festival”
Detroit Institute of Arts, Michigan

Annual Michigan Water Color Society’s Exhibitions

Kentucky Watercolor Society’s National Exhibition

Watercolor Society of Alabama Annual Exhibition

Annual Open Exhibition, Catherine Lorillard Wolf Art Club, New York

Annual Mid-year Show, Butler Institute of American Art, Ohio