Vitex agnus-castus may be grown in zones 6 to 9; it is technically hardy down to about -9 degrees. But in zones 6, it often is grown more as a perennial plant rather than a shrub, where it often ...

the lovely purple plant has a low-maintenance twin, the chaste tree (Vitex agnus-castus). This leafy small tree or shrub resembles lilacs but requires much less attention. It's a beautiful plant ...