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Synonyms : Chlora perfoliata.
Common Name : Yellow Wort
Blackstonia perfoliata is an annual flowering plant. It grows from ten to fifty centimetres, (four to twenty inches), tall with stiff, branching stems. The leaves are glaucous, opposite and entire, the upper ones perfoliate, being united at the base. It bears terminal cymes of bright yellow, stalked flowers, one to one and a half centimetres across. The calyx is deeply divided into 6-10 linear lobes or sepals, spirally arranged, free or nearly free from each other at the base and shorter than the corolla. The petals number six to ten and form a short tube. There are six to ten adherent stamens and a two-lobed stigma. It is in flower from Jun to October . The flowers are hermaphrodite (have both male and female organs) and are pollinated by Self.The plant is self-fertile. CLICK & SEE THE PICTURES :
A native plant, we do not have any details on its cultivation but it should succeed in a summer meadow or in a sunny position in a well drained soil. It prefers calcareous soils in the wild.
Seed – sow early spring in seed pots in a cold frame and plant out as soon as the plants are large enough to handle. When well sited, the plant should self-sow. If you have sufficient seed it should be possible to sow the seed in situ in the spring.
Medicinal Uses: Not known
Other Uses:..…Dye……A yellow dye is obtained from the plant extract