Full Sun
ORPartial Sun
Medium
Remove flowers as they fade to encourage new buds
Polemonium is a short lived perennial
Can be susceptible to mildew
Polemonium can be grown for seed but it is easier and quicker to divide a mature clump after flowering in the autumn
Species can be raised from seed, but cultivars must be divided
Sow in spring or late summer, covering lightly with vermiculite or perlite. Place under protection at 20C
Germination is 6-10 days
Polemonium grows best in fertile well drained soil, in sun or part shade. Use in the middle to the front of the border.
As Jacob's ladder is hardy, ensure temperatures are mild enough to plant out - wait until after your last frost date to be on the safe side.These estimates for how long Jacob's ladder takes to sprout, grow and harvest are from real observations from real gardeners, right around the world.
Average 10 days | Min days | Max days (0)
Average days | Min days | Max days (0)
Average days | Min days | Max days (0)
Polemonium’s long leaves that have paired leaflets along the mid rib, give the plant its common name as Jacob’s Ladder
Contains saponins and tannins
Polemonium
Polemonium L.