Spiderwort, Tradescantia ohiensis, is a perennial that grows 1 to 2 ft. in height. It has showy clusters of blue, three-petaled flowers top the stems. Its flowers tend to open in morning. When touched in the heat of the day, the flowers shrivel to a fluid jelly. This is an easy 'no-brainer plant' that seeds readily. Cut it back when it looks stalky and it will re-bloom, or in the case of winter, regrow as a thick leafy plant. Great for edgings or mixed flower beds and it attracts bees to the flowers.