Asclepias tuberosa did not establish in 2000, but did so the following year.
hirta and Vernonia gigantea flowered in 2000 and 2001, whereas those of Asclepias tuberosa flowered only in 2001.
These include four members of the genus Helianthus (the sunflowers), Silphium integrifolium (rosin-weed), Silphium perfoliatum (cup plant), Solidago speciosa (showy goldenrod), Allium (wild onion), two species of Anermone, Liatris aspera (rough gayfeather), Hedyotis nigricans (narrowleaf bluet), Asclepias tuberosa
(butterfly milkweed), Calylophus serrulatus (plains yellow primrose), and Aster sericeus (silky aster).
The expectorant and anti inflammatory actions of Asclepias tuberosa
may assist COPD patients however this herb is contraindicated in patients taking digoxin (Hoffman 2003).
The first plants to inhabit the study site after disturbance presumably belonged to native species such as Eleocharis rostellata and Asclepias tuberosa
, and to escaped species grown elsewhere in cultivation, for example, Juniperus horizontalis.
As the entire family worked in the yard cutting back last year's growth, we noticed little caterpillars crawling on the Asclepias tuberosa
- a k a butterfly weed.
Other forbs included Apocynum cannabinum (Indian hemp), Asclepias tuberosa
(butterflyweed), Baptisia tinctoria (wild indigo), Lespedeza capitata (bush clover), L.