The Butterfly bush, also known as Buddleia davidii in the ... this may be an easy win. Hardiness Zone: 4-8 Soil type: Well-drained, loamy Like many other milkweed varieties, the ever-so-showy ...
As Lorraine explains, this is often known as your 'growing zone' throughout the US. 'Some butterfly bushes are only hardy to zone 6 and warmer. Others are rated for lower zones,' the expert says. You ...