Polemonium reptans 39stairway to heaven39 features cream edged heat tolerant leaves that develop a stunning pink tinge when grown in full sun beautiful light blue flowers are borne in april in may held on stems above clusters of dainty variegated foliage jacob39s ladder is an eye45catching cottage garden hardy perennial that is a pleasant companion for hostas in shady positions and requires minimal maintenance height 40cm 40163441 spread 45cm 40183441