{"product_id":"acanthocalycium-glaucum","title":"Acanthocalycium glaucum","description":"\u003cp\u003e \u003cstrong\u003eScientific name\u003c\/strong\u003e : \u003cem\u003eAcanthocalycium glaucum\u003c\/em\u003e (synonym: \u003cem\u003eEchinopsis glaucina\u003c\/em\u003e )\u003c\/p\u003e\n\n\u003cp\u003e \u003cstrong\u003eCommon name\u003c\/strong\u003e : Glaucous Cactus, Blue-Green Cactus, Blue Acanthocalycium\u003c\/p\u003e\n\n\u003cp\u003e \u003cstrong\u003eOrigin\u003c\/strong\u003e : Argentina\u003c\/p\u003e\n\n\u003cp\u003e \u003cstrong\u003eFamily\u003c\/strong\u003e : Cactaceae\u003c\/p\u003e\n\n\u003cp\u003e \u003cstrong\u003eGenus\u003c\/strong\u003e : \u003cem\u003eAcanthocalycium\u003c\/em\u003e (often included in \u003cem\u003eEchinopsis\u003c\/em\u003e )\u003c\/p\u003e\n\n\u003cp\u003e \u003cstrong\u003eDescription\u003c\/strong\u003e : \u003cbr\u003e\u003cem\u003eAcanthocalycium glaucum\u003c\/em\u003e is a compact, solitary, globular cactus that can sometimes elongate slightly over time. This cactus is known for its epidermis covered with a protective layer of blue-gray bloom, giving it a unique appearance. It typically grows up to 15 cm tall and 8 cm in diameter, with 8 to 14 rounded ribs. This cactus is also characterized by its 5 to 10 radial spines, which are dark in color with a light base and measure up to 2.5 cm long. Central spines are often absent, but occasionally one or two may appear.\u003c\/p\u003e\n\n \u003cp\u003eThe flowers of \u003cem\u003eAcanthocalycium glaucum\u003c\/em\u003e are one of its most remarkable features, appearing in summer and measuring up to 6 cm long and in diameter. They can be yellow, or in some cases, red and yellow. The fruit is globose, dark green in colour, measuring about 2 cm in diameter. This cactus develops a tuberous root, which makes it well adapted to rocky and well-drained soils.\u003c\/p\u003e\n\n\u003ch3\u003e Growing conditions\u003c\/h3\u003e\n\n\u003cp\u003e \u003cstrong\u003eLight\u003c\/strong\u003e : Bright light to direct sun. Outdoors, it prefers direct sun or light afternoon shade. Indoors, it requires bright light with some direct sun to stay compact and develop strong spines.\u003c\/p\u003e\n\n\u003cp\u003e \u003cstrong\u003eWatering\u003c\/strong\u003e : Water regularly in summer, allowing the substrate to dry out completely between waterings. In winter, keep the plant dry to prevent rot, as it goes dormant.\u003c\/p\u003e\n\n \u003cp\u003e\u003cstrong\u003eHumidity\u003c\/strong\u003e : Prefers a dry environment. Good ventilation is essential to avoid humidity-related problems.\u003c\/p\u003e\n\n\u003cp\u003e \u003cstrong\u003eFertilizer\u003c\/strong\u003e : Apply a high potassium fertilizer during the summer to encourage flowering and build plant strength.\u003c\/p\u003e\n\n\u003cp\u003e \u003cstrong\u003eTemperature\u003c\/strong\u003e : This cactus is relatively cold hardy, being able to withstand temperatures down to -12 °C if kept dry. During the growing season, it prefers temperatures between 18 and 24 °C.\u003c\/p\u003e\n\n\u003cp\u003e \u003cstrong\u003eSubstrate\u003c\/strong\u003e : Use a very porous cactus mix with good drainage, consisting of pumice, akadama, and potting soil to avoid water stagnation.\u003c\/p\u003e\n\n\u003cp\u003e \u003cstrong\u003ePotting\u003c\/strong\u003e : Repot every 2 to 3 years, in spring, using a pot with good drainage. Choose a slightly larger pot to allow for the development of the tuberous root.\u003c\/p\u003e\n\n\u003ch3\u003e Interview\u003c\/h3\u003e\n\n \u003cp\u003e\u003cstrong\u003ePruning\u003c\/strong\u003e : Not necessary, except to remove faded flowers or damaged parts.\u003c\/p\u003e\n\n\u003cp\u003e \u003cstrong\u003ePest and disease management\u003c\/strong\u003e :\u003c\/p\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eRed spiders\u003c\/strong\u003e : Susceptible to red mites, especially in dry conditions. Aerial spraying can help control them.\u003c\/li\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eScale insects\u003c\/strong\u003e : May appear on new shoots or on roots. Scale insects should be monitored and treated with a suitable insecticide.\u003c\/li\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eScale insects\u003c\/strong\u003e : Rarely a problem, but watch out for them.\u003c\/li\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eRot\u003c\/strong\u003e : Rot is a minor problem if the cactus is properly watered and well ventilated. Fungicides can help, but good watering management is key.\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n \u003cp\u003e\u003cstrong\u003ePropagation\u003c\/strong\u003e : Propagated mainly by seed. Sow seeds after the last frosts of spring. Seeds germinate in 7-14 days at a temperature of 21-27°C. Keep young plants out of direct sunlight until well-rooted.\u003c\/p\u003e\n\n\u003cp\u003e \u003cstrong\u003eToxicity\u003c\/strong\u003e : Non-toxic to humans or animals, but thorns can cause minor injury if not handled carefully.\u003c\/p\u003e\n\n\u003cp\u003e \u003cstrong\u003eSpecific Uses\u003c\/strong\u003e : Excellent plant for growing in pots, especially in a cold greenhouse, frame or rock garden. It remains small and maintains an attractive appearance throughout the year.\u003c\/p\u003e\n\n\u003cp\u003e \u003cstrong\u003eInteresting Facts or Trivia\u003c\/strong\u003e : This species sometimes includes another variety, \u003cem\u003eAcanthocalycium aurantiacum\u003c\/em\u003e , which produces red flowers with an orange center, a variation that adds even more diversity to this fascinating genus.\u003c\/p\u003e\n\n\u003ch3\u003e Practical advice\u003c\/h3\u003e\n\n \u003cp\u003e\u003cstrong\u003eTips for successful plant cultivation\u003c\/strong\u003e : Provide this cactus with maximum light to encourage abundant flowering and maintain its robust spines. Water moderately in summer, and ensure that the substrate is well-drained to avoid root rot.\u003c\/p\u003e\n\n\u003cp\u003e \u003cstrong\u003eCommon mistakes to avoid\u003c\/strong\u003e : Do not overwater, especially in winter, and avoid placing the plant in a place that is too dark, which could slow its growth and compromise its flowering.\u003c\/p\u003e","brand":"Serre","offers":[{"title":"Default Title","offer_id":52109588103328,"sku":null,"price":0.0,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0655\/3878\/5440\/files\/acanthocalycium-glaucum-14972068790432-01a1554e.png?v=1792434384","url":"https:\/\/www.pepiniere.ca\/en\/products\/acanthocalycium-glaucum","provider":"Pépinière.ca","version":"1.0","type":"link"}