Mammillaria rhodanthaLink & Otto
Rainbow Pincushion
Cactus atratus , Cactus rhodanthus , Mammillaria atrata , Neomammillaria rhodantha
Photo byEverardo Flores López
Family : CactaceaeSubfamily : CactoideaeTribe : CacteaeSubtribe : CactinaeGenus : Mammillaria
The specific name " rhodantha(rho - DAN - tha ) " means " having carmine flower " and refers to the colour of the flowers .
Mammillaria rhodanthais native toMexico .
Mammillaria rhodanthais a small cactus with dark gullible bow covered with tubercles and spines that grow from the areoles at the bakshish of the cone-shaped to cylindric tubercles . It can develop lonesome or in modest ball . The root word are spherical to poor cylindrical or club - shaped with white woolen in the axil , measure out up to 16 inches ( 30 centimeter ) in height and up to 5 inches ( 12.5 cm ) in diam . The spine are variable in number , size , and color . Each areole bears 4 to 6 central and 16 to 24 radial spines . The central spines are reddish - brown or pale to golden yellow , slightly curl , measure up to 0.6 inches ( 1.5 centimeter ) long , while the stellate spines are white or yellowish , measuring up to 0.4 inches ( 1 centimeter ) long .
The flowers are deep - pinko to empurple and seem from spring to come down . They can reach up to 0.9 inch ( 2.2 cm ) in duration and 0.7 in ( 1.8 cm ) in diameter . The fruits are purple - pinkish , cylindrical to club - shaped , and can grow up to 1 column inch ( 2.5 cm ) long .
Light : found this cactus in an area of your garden that receives 4 hours of direct sunshine daily . If growingM. rhodanthaindoors , position it near the shining window in your home or power to assure your cactus get enough light . Place the pot on the balcony or in the garden for extra light from natural spring to fall if potential .
filth : M. rhodantharequires a territory commixture that provides radical aeration and good drain , whether grown outdoors or indoors . habituate commercial-grade cactus potting mixes orcreate your own potting mixture .
Hardiness : This cactus is heat tolerant but is not a cold - hardy plant . M. rhodanthacan withstand temperatures as low-down as 25 to 50 ° F ( -3.9 to 10 ° C),USDA hardiness zones9b to 11b .
tearing : From leaping to light , water deeply and expect for the dirt to dry out before watering again . Never let the pot sit in water . Suspendwateringin the winter .
Fertilizing : M. rhodanthacan benefit fromfertilizingduring the growing season . go for a water - soluble fertilizer for cacti and other succulent . debar feed during the winter when the works goes torpid .
Repotting : Repot every two or three eld into a slenderly larger pot . The best fourth dimension to repot yourM. rhodanthais late wintertime or early bound , but the repotting mental process can be done almost any metre of the year .
Propagation : There are two easy way to propagateM. rhodantha : by seeds or by dividing offsets . The good time to remove offset is in natural spring and summer . Sow the seeds in recent spring or summer .
Learn more atHow to maturate and Care for Mammillaria .
M. rhodanthais considered non - toxic to both humans and pets .
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