City	Sow outdoors	Last frost
Virginia Beach	Mar 29 to Apr 19	Mar 29
Richmond	Apr 3 to Apr 24	Apr 3
Arlington	Mar 24 to Apr 14	Mar 24
Norfolk	Mar 16 to Apr 6	Mar 16
Newport News	Apr 1 to Apr 22	Apr 1
Alexandria	Mar 24 to Apr 14	Mar 24
Hampton	Mar 24 to Apr 14	Mar 24
Suffolk	Mar 27 to Apr 17	Mar 27
Roanoke	Apr 3 to Apr 24	Apr 3
Portsmouth	Mar 23 to Apr 13	Mar 23
Lynchburg	Apr 17 to May 8	Apr 17
Dale City	Apr 12 to May 3	Apr 12
Centreville	Apr 15 to May 6	Apr 15
Reston	Apr 14 to May 5	Apr 14
Harrisonburg	Apr 21 to May 12	Apr 21
McLean	Apr 9 to Apr 30	Apr 9
Leesburg	Apr 16 to May 7	Apr 16
Tuckahoe	Apr 10 to May 1	Apr 10
Ashburn	Apr 13 to May 4	Apr 13
Blacksburg	Apr 24 to May 15	Apr 24
Lake Ridge	Apr 12 to May 3	Apr 12
Charlottesville	Apr 2 to Apr 23	Apr 2
Manassas	Apr 12 to May 3	Apr 12
Woodbridge	Mar 28 to Apr 18	Mar 28
Burke	Apr 14 to May 5	Apr 14
Linton Hall	Apr 12 to May 3	Apr 12
Annandale	Apr 14 to May 5	Apr 14
Danville	Apr 8 to Apr 29	Apr 8
Mechanicsville	Apr 10 to May 1	Apr 10
Oakton	Apr 14 to May 5	Apr 14
Fair Oaks	Apr 14 to May 5	Apr 14
South Riding	Apr 15 to May 6	Apr 15
Petersburg	Apr 3 to Apr 24	Apr 3
Sterling	Apr 13 to May 4	Apr 13
Springfield	Mar 24 to Apr 14	Mar 24
West Falls Church	Apr 14 to May 5	Apr 14
Fredericksburg	Apr 6 to Apr 27	Apr 6
Winchester	Apr 11 to May 2	Apr 11
Short Pump	Apr 10 to May 1	Apr 10
Tysons	Apr 14 to May 5	Apr 14
Staunton	Apr 15 to May 6	Apr 15
Fairfax	Apr 14 to May 5	Apr 14
Cave Spring	Apr 3 to Apr 24	Apr 3
Salem	Apr 3 to Apr 24	Apr 3
Herndon	Apr 15 to May 6	Apr 15
Bailey's Crossroads	Mar 24 to Apr 14	Mar 24
Brambleton	Apr 13 to May 4	Apr 13
Waynesboro	Apr 21 to May 12	Apr 21
Chantilly	Apr 15 to May 6	Apr 15
Chester	Apr 3 to Apr 24	Apr 3
Cherry Hill	Mar 28 to Apr 18	Mar 28
Hopewell	Mar 31 to Apr 21	Mar 31
West Springfield	Apr 14 to May 5	Apr 14
Leesylvania	Mar 28 to Apr 18	Mar 28
McNair	Apr 15 to May 6	Apr 15
Christiansburg	Apr 19 to May 10	Apr 19
Montclair	Mar 28 to Apr 18	Mar 28
Culpeper	Apr 21 to May 12	Apr 21
Lorton	Apr 3 to Apr 24	Apr 3
Woodlawn	Apr 3 to Apr 24	Apr 3
Rose Hill	Mar 24 to Apr 14	Mar 24
Merrifield	Apr 14 to May 5	Apr 14
Buckhall	Apr 12 to May 3	Apr 12
Meadowbrook	Apr 3 to Apr 24	Apr 3

Questions

When should I plant sunflowers in Virginia?

In Virginia Beach, sow outdoors from March 29 to April 19. Across Virginia the window opens between March 16 and April 24, depending on the local last frost.

How is this date worked out?

Sow outdoors up to 3 weeks after the last frost. Frost dates are NOAA 1991–2020 averages for the weather station nearest each city.