Gymnocalycium castellanosiiBackeb .
Gymnocalycium castellanosiisubsp.castellanosii
Family : CactaceaeSubfamily : CactoideaeTribe : TrichocereeaeGenus : Gymnocalycium
Photo bycactusgarden.ru
Gymnocalycium castellanosiiis aboriginal toArgentina .
Gymnocalycium castellanosiiis a small cactus with a lonely , green to bluish - dark-green stem with 10 to 12 ribs run along with clusters of 5 to 10 backbreaking spines . The stem is globose to flatten - ball-shaped and can produce up to 4 inches ( 10 cm ) marvellous and 6 inches ( 15 atomic number 96 ) in diameter . The pricker are somewhat curved back , measuring up to 1 in ( 2.5 cm ) long , and can be whitish , greyish , or brownish , with a darker tip . Each areole bears 5 to 8 radial spines and no ( rarely one or two ) central spines .
The flower appear in leaping and summer and are white to light pinkish with a pinkish or reddish throat . They are funnel - mold and can reach up to 1.8 inches ( 4.5 cm ) in diam .
Photo byJosef Skála
USDA hardiness zones9b to 11b : from 25 ° F ( −3.9 ° C ) to 50 ° F ( +10 ° C ) .
SomeGymnocalyciums seek shade in the state of nature , among bush or grasses , while others grow wholly divulge . Therefore , some need lighting shading from the sun in the hottest months , but exaggerate this will leave in losing flower .
The balance of thepotting mediumshould be sufficient to let good drainage so that the plant do not sit in mucky filth for more than a day or two after watering .
Photo viagymnocalycium.fr
Wateringin the summertime while the plant life are turn well can be frequent ( weekly for modest plants in modest pots ) , but always permit the compost to nearly dry out before rewatering . Watering in the wintertime months is unwise and surely not necessary . The difficult time are spring and autumn .
Those species which produce offsets can be readily disseminate by cuttings . Gymnocalyciumseed germinates well when sweet and will keep for a few years if hive away in cold conditions .
Learn more atHow to raise and Care for Gymnocalycium .
Photo viagymnocalycium.fr
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