Commelina
Cœlestis
Half Hardy Perennial
Eighteen inches.
Flowers blue, June to August, according to time
of sowing.
A plant with slender tuberous roots, which are
not strictly hardy in severe winters; the foliage
is broad and grassy, and the flowers of a very
lovely shade of blue. Seed should be sown in a
mild hotbed in March, and the plants put out in
May; it is possible, in kindly soil, to raise
plants from a sowing in the open in April, which
will flower late in the season. The roots should
be taken up before the winter and stored in dry
earth or sand. In mild climates and dry soils
they may survive in the open ground, with the
protection of some sandy compost or dry leaf litter
spread over their station. There is a white-flowered
variety, but the charm of the genus is in its
peculiar shade of bright blue.
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