April 9 & May 7 - Beltsville Garden Club Spring Sales
Beltsville, MD
http://www.beltsvillegardenclub.org/SpringSales2011.html

April 14 - 16, AHS River Farm Annual Spring Garden Market
Great Falls, VA
http://www.ahs.org/river_farm/events.htm

April 15 & 16 - Fairfax County 2011 Native Seedling Sale
http://www.fairfaxcounty.gov/nvswcd/orderform_2011.pdf

April 16 - Long Branch Nature Center Plant Sale
Arlington, VA
http://www.arlingtonva.us/calendar/#EventDetails_12663

April 16 - Chesapeake Natives Native Plant Sale
Takoma Park, MD
www.chesapeakenatives.org

April 16 & 17 - Adkins Arboretum Native Plant Sale
Ridgely, MD
http://www.adkinsarboretum.org/native_plant_resources/plant_sale.html

April 17 - Herring Run Spring Native Plant Sale
Baltimore, MD
http://bluewaterbaltimore.org/herring-run-nursery/native-plants

April 29 & 30 - Black Hill Native Plant Sale
Boyds, MD
http://www.montgomeryparks.org/nature_centers/blackhill/spring_programs.shtm#march

April 30 - Parkfairfax Native Plant Sale
Parkfairfax Community - Alexandria, VA
http://home.earthlink.net/~sknudsen/

April 30 & May 1 - Delaware Nature Society
Greenville, DE
http://www.delawarenaturesociety.org/coverdale.html

May 1 - Audubon Nature Fair
Chevy Chase, MD
http://www.audubonnaturalist.org/default.asp?page=568

May 6 & 7 - Flower Mart at the National Cathedral
http://www.allhallowsguild.org/fm/come.html

May 7 - Assateague Coastal Trust Native Plant Sale
Berlin, MD
http://www.actforbays.org/

May 7 - Prince William Wildflower Society Native Plant Sale
Manassas, VA
http://vnps.org/pwws/

May 14 - Green Spring Garden Park Plant Sale
Annandale, VA
http://www.fairfaxcounty.gov/parks/gsgp/events.htm/

May 14 - DE Center for the Inland Bays Native Plant Sale
James Farm Ecological Preserve- Ocean View, DE
http://www.inlandbays.org/?page_id=1244

May 14 - Blue Ridge Wildflower Society Plant Sale
Roanoke VA
http://brwfs.org/calendar.htm

May 14 & 15 - Hyattsville Elementary PTA's 2nd Annual Native Plant Sale
Hyattsville, MD
http://www.nativeplantsale.org

May 14 - Roland Park Elementary/Middle School Native Plant Sale
Baltimore, MD.
http:// www.RolandParkNative.org

May 20 & 21 - Environmental Concern Spring Native Plant Sale
EC Open House on Saturday
Environmental Concern - St. Michaels, MD
Information

June 3 & 4 - Millersville Native Plant Sale
Millersville, PA
http://www.millersvillenativeplants.org/vendors

June 25 - Nanticoke River Jamboree
Handsell - Vienna, MD
http://nanticokeriverjamboree.com/

August 27 - Irvine Native Plant Seminar & Sale
Irvine Nature Center - Owings Mills, MD
http://www.irvinenaturecenter.net/images/native_plants.pdf

September 9 & 10 - Environmental Concern Fall Native Plant Sale
Environmental Concern - St. Michaels, MD
http://www.wetland.org/nursery_retail.htm

September 17 & 18 - Adkins Arboretum Native Plant Sale
Ridgely, MD
http://www.adkinsarboretum.org/native_plant_resources/plant_sale.html