For a stunning blanket of early spring (April to June) blue blooms that gently sway on drifts of ladder-like stems, plant Jacob’s Ladder in a moist, well-drained and partially shaded location. Its clumping form typically reaches about 15 inches in height and 12 inches in width. It easily self-seeds under the right conditions and is hardy in zones 3 to 8. It is somewhat deer resistant and a true winner in a woodland garden.