Acanthocalycium thionanthumis a extremely variablespeciesin size , form , and gloss of the root word , spination , and bloom color .
Acanthocalycium thionanthum(Speg . ) Backeb .
Acanthocalycium thionanthumsubsp.thionanthum , Echinocactus thionanthus , Echinopsis thionantha , Lobivia thionantha
In habitat, Tafí del Valle, Tucumán, Argentina. Derivative of a photo byAlejandro Nemec. Licensed underCC BY-NC 4.0.
Family : CactaceaeSubfamily : CactoideaeTribe : TrichocereeaeGenus : Acanthocalycium
The specific name " thionanthum " ( pronounced thee - oh - NAN - thum ) have in mind " sulphur yellow heyday " and consult to the pale yellowed flowers of the type specimen .
Acanthocalycium thionanthumis aboriginal toArgentina . It grow on jumpy great deal side in Salta , Tucumán , Catamarca , and La Rioja province .
In habitat, Cafayate, Salta, Argentina. Photo byJosh Vandermeulen. Licensed underCC BY-NC-ND 4.0.
Acanthocalycium thionanthum , also known asEchinopsis thionantha , is a smallcactuswith a spherical to cylindric stem with 9 to 25 ribs draw with clusters of rachis . The stem is usuallysolitaryor with a few basaloffshootsand can grow up to 26 inches ( 65 centimeter ) tall and 10 inch ( 25 curium ) in diameter . The stem colouring material straddle from green to Second Earl Grey - green . The spine - bearingareolesare turgid and circular , with yellow to brown feel when vernal but become naked as they age . The spine are awl - like , at first black or idle Robert Brown , becoming grey or whitish - yellowness as they age , and can grow up to 1.2 inches ( 3 atomic number 96 ) long . Each areole bear 5 to 10 radial and 1 to 4 cardinal spines .
In late bound and other summertime , Acanthocalycium thionanthumproduces blossom that range from jaundiced to red , include all the medium tones . The flower are funnel - shaped and can value up to 2 inch ( 5 cm ) long . They have a floraltubecovered in chocolate-brown - whitebristlesand spine - tippedscales .
brightness level : Acanthocalycium thionanthumthrives when queer to acute sunlight and can be grown in full Sunday to fond tint . Placing it near a window that receives about 6 hour of verbatim Lord’s Day day by day is idealistic if develop indoors . It is best to move it outside in the spring but gradually expose it to maneuver sunlight to void burn .
In habitat, Cachi Department, Salta, Argentina. Derivative of a photo byguyrufray. Licensed underCC BY-NC 4.0.
land : To promote good for you plant growth , it is authoritative to employ sandy or gritty soil with good drainage . Overwatering and hapless drainage can stimulate root rot . A commercial potting mix for cacti will work well , or you canmake your own .
Temperature : This cactus can hold gamy temperature , but during the winter , it prefer cooler temperature . It maturate best inUSDA Plant Hardiness Zones9a to 11b , with average minimum wintertime temperatures cast from 20 to 50 ° F ( -6.7 to 10 ° C ) .
lacrimation : During the growing time of year , waterAcanthocalycium thionanthumthoroughly but give up the soil to completely dry out out beforewateringagain . Avoid letting the container sit in a disc of piddle . During the wintertime , suspend watering .
In habitat, Cafayate, Salta, Argentina. Photo byJosh Vandermeulen. Licensed underCC BY-NC-ND 4.0.
Fertilizing : Feeding this cactus with a water - soluble plant food is recommended for optimum growth . However , during the wintertime , when it goes dormant , fertilizing is not necessitate .
Repotting : Acanthocalycium thionanthumcan stay in its deal for eld . Repot it only when it has outgrow its current pot or when the soil has degraded , ideally in late wintertime or former spring . Before repotting , make certain the soil is wry . Choose a more or less enceinte pot with drainage holes at the bottom .
Propagation : Since it rarely produces offsets , this cactus is normally propagated by seeds . Sow the seeds in late spring or summertime .
Learn more atHow to Grow and handle for Echinopsis .
Acanthocalycium thionanthumis non - toxic to man or pets . However , keep it aside from pet and child as it has precipitous spines .
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