The periwinkle is a poisonous plant, and its toxicity is reflected in the sap, of which the flowers are the most toxic. But generally, it is only poisonous if a wound touches the sap, or if the sap is accidentally ingested. Slightly touching the flowers and leaves of the periwinkle will not cause harm to the human body, as long as you pay attention to some, do not just break the branches and leaves will be fine.

If accidentally eaten periwinkle, will cause white blood cell reduction, thrombocytopenia, muscle weakness, limb paralysis and other symptoms.

Periwinkle is not recommended to be raised indoors, first of all, it is not good for the safety of the breeders, and secondly, from the growth habit of periwinkle, it likes light, but tolerates semi-shade environment. If the light is insufficient, it will lead to fewer flowers, bad flowers and thinner flowers.

So if the indoor light is not good, there is no direct light, it is not recommended to breed indoors, it is not good for its growth and flowering.

Expanded Information:

Periwinkle, scientific name: Catharanthus roseus? (L.) G. Don, is a plant of the genus Periwinkle in the family Oleaceae. Alias marigold, four times spring, day new, goose head red, three million flowers, Taiwan breeding a number of varieties, breeding to the larger the flowers as a trend.

In Chinese herbal medicine, the whole herb can be used to relieve pain, anti-inflammatory, sleeping, laxative and diuretic. It has also been used in cancer treatment formulas as an ingredient in medicinal herbs, probably because of its anti-tumor properties.

The growth habit of periwinkle:

Happy with high temperature, high humidity, semi-shade tolerance, intolerance of cold, the optimal temperature of 20 ℃ -33 ℃, like sunlight, avoid wet and afraid of flooding, general soil can be cultivated. But saline soil is not suitable for well-drained, ventilated and airy sandy or humus-rich soil is good, flowering and fruiting almost all year round.

Periwinkle effect:

1, anti-tumor effect: from the periwinkle plant alkaloids, more anti-tumor effect, with periwinkle alkaloids, periwinkle alkaloids are the most valuable, has been applied to clinical.

2, antihypertensive effect: separated from the periwinkle needle or small rod colorless alkaloid crystals, intravenous injection of 1.5-4mg/kg, anesthetized cats, dogs, rabbits, etc. have a significant antihypertensive effect, the lowering of blood pressure lasts for about 1 hour before returning to or close to the original level.

3, hypoglycemic effect: foreign folk with periwinkle leaves and the whole plant for the treatment of diabetes mellitus, isolated from the periwinkle Vindoline, Leurosine, Lochnerine, Catharanthine, Tetrahydroalstonine, Vindolinine have different degrees of hypoglycemic effect. The effects of Vindoline and Vindolinine have been shown to be slow in the beginning, but long lasting.

The aqueous extract of the leaves also lowered blood glucose in normal and tetrahydroxypyrimidine-induced diabetes in rabbits and dogs.

4, diuretic effect: Vindolinine and other saline loaded rats have diuretic effect.

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