Ohio Spiderwort (Tradescantia ohiensis)
Grows up to 3' tall with dark bluish-green, grass-like leaves and blue three-petaled flowers that bloom from late May into early July. Each flower opens up for only one day. Commonly found in prairies and meadows. Very adaptable tolerating many types of soil. Perennial.
Mature plant in 1/2 gallon pot.