Dragon’s Head, Moldavian Balm (Dracocephalum moldavicum)

This perennial herb is hardy in zones 3a-7b, growing 1 foot high and 1 foot wide with blue and purple blooms, blooming in mid-to late-summer. Plant in partial shade to full sun in fast-draining soil, watering regularly. The flowers are very long lasting, bright purple, proportionally large to the plant, and shaped like the head of a dragon. Sow in fall to early spring. Barely cover seed, tamp well and keep evenly moist until germ. If soil has already warmed up, give 30 to 90 days of cold, moist refrigeration by mixing seed in moist mix in a plastic bag or lidded jar in the fridge.

History
Dracocephalum rupestre is a low growing perennial that makes dense clumps of basal rosette with broad leaves and upright to arching spikes with large dark blue flowers. The flowers are produced in midsummer over 30cm (12in) tall plants. It is very fragrant, with both the leaves and the flowers emitting a most refreshing scent of lemons. The flowers remain fragrant and fresh for several weeks.

Dragon’s Head is an extremely useful plant, It is easily cultivated in any rich, very well drained, rather rocky soil in full sun. Use it in rockeries or as a groundcover, it can also be used for under-planting in containers.
Native to Alpine meadows, grassy slopes and sunny areas in sparse forests of eastern Asia where it is used as an ornamental herb for its large, purple-blue flowers and as tea substitute in China.

With a bit of imagination you can distinguish the head of a dragon in the shape of the flowers, complete with fangs.

Dracocephalum, (pronounced dra-KO-ceph-a-lum), is a genus of about 45 species of flowering plants in the family Lamiaceae, native to temperate regions of the Northern Hemisphere. They are annual or perennial herbaceous plants or subshrubs, growing to 15 to 90 cm tall.
This species D. rupestre is often incorrectly sold under the name D. grandiflorum. One way to tell the two species apart is that the petioles of the middle cauline leaves are 2 to 6 cm long on the true D. grandiflorum – while D. rupestre has very short or no petioles.

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