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Botanical Name : Linaria canadensis
Species: N. canadensis
Synonyms: Linaria canadensis (L.) Dumort., Antirrhinum canadense L.; Blue toadflax, Canada toadflax, Old-field toadflax.
Common Name: Blue Toadflax
Habitat : Linaria canadensis is native to eastern North America from Ontario east to Nova Scotia and south to Texas and Florida. It has been introduced to western North America and Europe, and is now locally naturalized, from Washington south to California, and also in Russia. It grows on dry sterile or sandy soils, often a weed in sandy loams.
It is an annual or biennial plant growing to 25–80 cm tall, with slender, erect flowering stems. The leaves are slender, 15–30 mm long and 1-2.5 mm broad. The flowers are purple to off-white, 10–15 mm long, appearing from mid spring to late summer. It typically grows in bare areas and grassland.
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The flowers are hermaphrodite (have both male and female organs)Suitable for: light (sandy) and medium (loamy) soils, prefers well-drained soil and can grow in nutritionally poor soil. Suitable pH: acid, neutral and basic (alkaline) soils. It cannot grow in the shade. It prefers dry or moist soil and can tolerate drought.
A very drought resistant plant once established, it thrives in a poor gravelly soil. Nitrogen-rich soils produce excessive leaf growth at the expense of flowering. Prefers a sunny position.
Seed – sow spring in situ. An autumn sowing can also be made in areas with mild winters. This sowing will produce larger plants.
Medicinal Uses: The leaves are antihaemorrhoidal, diuretic and laxative. They are applied externally in the treatment of haemorrhoids.
Other Uses: Linaria canadensis is grown as an ornamental plant in its native area.
Disclaimer : The information presented herein is intended for educational purposes only. Individual results may vary, and before using any supplement, it is always advisable to consult with your own health care provider.