We have 12 different dahlia companion plants for you to ... is a herbaceous perennial that puts on pretty purple, blue, or pink spiky flowers that look lovely with dahlias in mid- to late-summer ...

Blue is the only color not ... By starting your dahlia tubers now, you will gain many early weeks of enjoyment from your flowers.

Lavender (Lavandula) is a classic herb that produces slender spikes of tiny purple, blue, or white flowers above silvery-green foliage, says Funk. Its blooms have a strong herbal fragrance that is ...