This section is from the book "Commercial Gardening Vol2", by John Weathers (the Editor). Also available from Amazon: Commercial Gardening, A Practical & Scientific Treatise For Market Gardeners.
This plant is much better known as Plumbago Larpentoe. It is a Chinese hardy herbaceous perennial, 1-2 ft. high, remarkable for the beautiful bronzy-yellow and scarlet tints of its oboval leaves and bracts in summer and autumn. It has masses of sky-blue flowers in September and October. It grows in any garden soil, and is increased by division in spring.