Polygonatum

Polygonatum

Polygonatum , King Solomon's-seal or Solomon's Seal, is a genus of about 50 species of flowering plants. In the APG III classification system, it is placed in the family Asparagaceae, subfamily Nolinoideae...

× hybridum (Garden Solomon's-seal) is a hybrid cross between Common Solomon's-seal (Polygonatum multiflorum

Polygonatum multiflorum

Polygonatum multiflorum is a plant species of the genus Polygonatum. In Britain it is one of three native species of the genus, the others being Angular Solomon's-seal and Whorled Solomon's-seal.-References:*Matthew Wood. Random House, 1997. ISBN 9781556432323; pp. 397–408...

) and Angular Solomon's-seal (Polygonatum odoratum

Polygonatum odoratum

Polygonatum odoratum, commonly known as Angular Solomon's-seal or Scented Solomon's-seal, is a plant species of the genus Polygonatum...

). In gardens it is susceptible to attack by the larvae of Soloman's Seal sawfly

Sawfly

Sawfly is the common name for insects belonging to suborder Symphyta of the order Hymenoptera. Sawflies are distinguishable from most other Hymenoptera by the broad connection between the abdomen and the thorax, and by their caterpillar-like larvae...

 (Phymatocera aterrima), which feed on the underside of the leaves, rapidly reducing them to a skeletonised appearance.

The plant tends to be more vigorous

Heterosis

Heterosis, or hybrid vigor, or outbreeding enhancement, is the improved or increased function of any biological quality in a hybrid offspring. The adjective derived from heterosis is heterotic....

than either of its parent species.