Common Name(s):Solomon's Seal
USDA Hardiness Zones:
- P. biflorum - True Solomon’s Seal. Very dependable and one of the fastest growing.
- P. odoratum 'Variegatum' - Fragrant Solomon's Seal. Variegated form with white tips.
- P. biflorum var. commutatum - Giant Solomon’s Seal. Grows to about 5' in height.
Polygonatum like a rich organic soil with a pH in the acidic to neutral zone. They need some shade to truly thrive. Damp shade is even better, although once established, they are quite drought tolerant. Plants can be started in the spring or fall. Plant only 1 - 2 inches deep and about 2-3 inches apart.
Maintenance: Solomon’s Seal seldom needs division. It takes several years before a clump is large enough to divide for propagation purposes. When ready, divide in early spring or fall and leave several buds on each division, for the best success. The rhizomes can be divided even further, but it will take longer for them to become established. Another option is to remove and plant just the offsets at the out edges of a clump.
Solomon’s Seal does not require deadheading. The flowers are small and will drop off naturally. The foliage remains attractive all season, so the plant is virtually maintenance free. The stems even disconnect from the rhizomes on their own, after frost. But before that, the foliage turns a nice golden yellow.
Pests & Problems: Healthy Polygonatum growing in good conditions seem to have few problems. If the weather is extremely damp, you may see signs of powdery mildew or another fugal disease. These should ameliorate as things dry out. Better air circulation will also help. Slugs and snails can also become a problem in damper areas.