Polemonium reptans (Jacob's Ladder)
Creeping Jacob's Ladder is a North American native and one of the lovelies of the spring garden. It grows from 8-12 inches tall in Zones 3-8 with fern-like foliage and lovely pink to light blue flowers, held in loose clusters. Polemonium reptans prefers full to partial shade and moist, well-drained soil. It often goes dormant in summer, so plant it with later bloomers to fill in bare spots. The roots of Polemonium reptans have been used medicinally for treating kidney ailments. Deer resistant. Quarts. (Photo by Dr. Tom Barnes, University of Kentucky, and used with his permission)
Polemonium yezoense "Purple Rain" (Jacob's Ladder)
The photo hardly does justice to this most unusual and attractive Jacob's Ladder. Polemonium yezoense "Purple Rain" is the showiest Jacob's Ladder I have ever grown. Not only are the flowers larger than most, but they are not the azure blue we usually associate with Jacob's Ladder. Instead, they are a beautiful shade of violet. That's not all that is different about this showy perennial: the ferny foliage is a tinted with purple. It is a prolific bloomer, too, so when it "rains," it really does pour with this flower. Growing to about two feet in sun/part shade in Zones 5-9. Quarts.