Commelina coelestis is a PERENNIAL growing to 0.5 m (1ft 8in) by 0.3 m (1ft). It is hardy to zone (UK) 9. It is in flower from July to September, and the seeds ripen from August to October. The species is hermaphrodite (has both male and female organs).
If you live in an area with frequent summer storms, chances are your natural environment probably provides enough rain to keep your spiderwort plants happy. Plants grown in containers instead of in the ground should be watered more frequently, as they're less likely to retain adequate moisture.
While the plant tends to prefer partial shade, it does well in almost any environment, so long as it gets at least a few hours of light per day and enough water if exposed to all-day sunlight.
Fertilizing your spiderwort plant is most important if you're attempting to grow the varietal indoors—you can apply a balanced liquid fertilizer once a month to any container spiderwort plants, tapering off your application as the plant goes dormant in winter.
Spiderwort is easily grown in almost any soil condition, so long as it is moist but well-draining—it thrives best in a humusy soil that boasts a slightly acidic pH of 5.0 to 6.0.
