Gardens with a checked street address within 50 straight-line miles of the U.S. Census reference point for Washington, District of Columbia. Each result shows its own town; being on this page does not mean a garden is inside Washington city limits. Distances are straight-line, not driving.
Within 50 miles of central Washington. Checked September 28, 2026.
Five acre azalea garden in a hardwood forest near Brighton Dam, with more than 22,000 azaleas. Open daily from March 15 to November 30; peak bloom is late April to early May.
50 acre public display garden in Wheaton Regional Park with aquatic, azalea, butterfly, rose and Japanese style gardens and two conservatories. Admission and parking are free.
200 acre arboretum in Baltimore with specimen trees, gardens, wooded trails and a nature center. Grounds are open Tuesday to Sunday and closed Mondays.
A Fairfax County park with more than 20 demonstration gardens, a native plant garden, a greenhouse and a historic house. Grounds are open dawn to dusk.
Historic glass conservatory in Druid Hill Park, Baltimore, with five greenhouses and a half-acre garden. Open Wednesday to Sunday with free parking nearby.
Marjorie Merriweather Post's estate in Washington, D.C., with a mansion museum, rose garden, Japanese-style garden, French parterre and greenhouse. Closed Mondays.
National Park Service ponds in northeast Washington planted with lotus and water lilies, which bloom from late May through September. Open year-round.
A 95-acre regional park garden in Vienna, Virginia with ornamental and native plant gardens, a visitor center and a gift shop. Paid admission; hours change by month.
A 4.5-acre walled garden with herb and meditation areas at a historic estate near Leesburg, with 8.5 miles of trails. Garden tickets are sold apart from mansion tours.
American Horticultural Society headquarters with formal and naturalistic gardens above the Potomac River. Entry is free except during special events.
A federal living plant museum near the Capitol with an indoor Conservatory, outdoor National Garden and nearby Bartholdi Gardens. Admission is free and no tickets are needed.
These are gardens we could check against their own official websites, not every garden in the area. “Free” refers to general garden entry, not parking, tours or special events. We do not show live opening status.
Read the source and coverage notes
