Spiderwort (Tradescantia virginiana) is one of my favorite perennials. It’s easy to grow, it does well in sun or shade, it can take fairly dry conditions, and it blooms for a nice, long while. We have one with leaves that are very pale green, almost yellow. We have one with flowers that are much more pink and some that are nearly pure, deep blue. Each bloom lasts for a day only but there are a lot of them, following one after the other.
From the Missouri Botanical Garden page:
Genus name honors John Tradescant (1570-1638) and his son John Tradescant (1608-1662), botanists and successive gardeners to Charles I of England.
Specific epithet means of Virginia.
When the stems of spiderworts are cut, a viscous stem secretion is released which becomes threadlike and silky upon hardening (like a spider’s web), hence the common name.