African Marigold (Tagetes erecta)

Hardiness zone: 2, 3, 4, 5, 6, 7, 8, 9, 10, 11

Growth rate: Medium

Alder buckthorn (Frangula alnus)

Hardiness zone: 2, 3, 4, 5, 6, 7

Growth rate: Slow

Alpine Currant (Ribes alpinum)

Hardiness zone: 2, 3, 4, 5, 6, 7

Growth rate: Medium

Annual Phlox (Phlox drummondii)

Hardiness zone: 2, 3, 4, 5, 6, 7, 8, 9, 10, 11

Growth rate: Fast

Annual Toadflax (Linaria maroccana)

Hardiness zone: 2, 3, 4, 5, 6, 7, 8, 9, 10, 11

Growth rate: Medium

Arrowwood Viburnum (Viburnum dentatum)

Hardiness zone: 2, 3, 4, 5, 6, 7, 8

Growth rate: Medium

Arugula (Eruca vesicaria)

Hardiness zone: 2, 3, 4, 5, 6, 7, 8, 9, 10, 11

Growth rate: Fast

Beetroot (Beta vulgaris)

Hardiness zone: 2, 3, 4, 5, 6, 7, 8, 9, 10, 11

Growth rate: Medium

Black Ash (Fraxinus nigra)

Hardiness zone: 2, 3, 4, 5, 6, 7, 8, 9

Growth rate: Slow

Black Cherry (Prunus serotina)

Hardiness zone: 2, 3, 4, 5, 6, 7, 8

Growth rate: Fast

Black Hills Spruce (Picea glauca var. densata)

Hardiness zone: 2, 3, 4, 5, 6

Growth rate: Slow

Black Pearl Amaryllis (Amaryllis ‘Black Pearl’)

Hardiness zone: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10

Growth rate: Fast