Your zip code 20149 is in Zone: 6b with a temperature range of: -5 to 0 °F.
These Plants are Suitable for your USDA Zone
Abelia hybrid ‘Conti’
Echinacea hybrid ‘Adam Saul’ PP21023
Veronica spicata ‘Novaverblu’ PP26602
Nandina domestica ‘Murasaki’ PP21391
Buxus microphylla ‘Gregem’ PP21159
Cornus angustata ‘Elsbry’
Carex oshimensis ‘Everillo’ PP21002
Thuja Occidentalis ‘Congabe’ PP19009
Carex oshimensis ‘Eversheen’ PP25938
Rhododendron hybrid ‘Janet Blair’
Rhododendron hybrid ‘Elizabeth Ard’
Rhododendron hybrid ‘Tyler Morris’
Buddleia hybrid ‘PDSI-1’
Cephalotaxus harringtonia ‘Plania’
Solar Ray™ hybrid ‘QbackC’
Ligustrum sinense ‘Sunshine’ PP20379
Gaillardia x grandiflora ‘Celebration’ PP26969
Leucanthemum superbum ‘Real Charmer’ PP27687
