Schlumbergera×buckleyi , commonly have it off as Christmas Cactus or True Christmas Cactus , performs best indoors but also thrives in sheltered domain outdoors inUSDA hardiness zones10 to 12 . An build Christmas Cactus typically tolerate few problem , although some may develop red - tinged foliage due to poor turn condition , infections , or inadequate maintenance .
ethnic tenseness is one common reason Christmas Cactus develop red foliage , specifically if it is exposed to direct sun in summer or does not meet enough pee . As a tropical woodland plant life , thiscactusperforms good in fond shade during warm seasons . However , it prefer full sun during midwinter and requires slenderly more water than other cacti . Therefore , it should be watered whenever its soil find dry 1 inch ( 2.5 cm ) below the open . If an install Christmas Cactus develops reddish leafage but otherwise appears healthy , evaluate its sluttish exposure and move it if necessary . Likewise , adjust the soil moisture level and not allow it to dry out for too long between waterings .
Overwateringcauses price to radical both by limiting their oxygen exposure and by undermine their tissue paper . Root rot is a distinctive result of overwatering . It is characterized in Christmas Cactus by hokey tissue , wilting , and pink or reddish discolouration on the leaf . Another tell - tale sign of root rot is the territory ’s musty or saturnine odor . An unnatural plant should berepottedinto fresh , unusedpotting soiland left unwatered for 2 to 3 weeks . clip off the disadvantageously damaged foliage and slowly return the plant to a regular water supply schedule by letting the soil dry out in the top 1 inch ( 2.5 cm ) between tearing . Disinfect pruning steel before and after consumption by wiping them with rubbing alcohol .
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Christmas Cacti may develop an plague of Cactus Cyst ( Cactodera cacti ) if pot in polluted soil orpropagatedfrom an septic plant . As a nematode , Cactus Cyst in the main dissemble the roots but can cause a legion of symptom in the foliage . Stunted growth , wilt , and reddish stain are common symptoms , but the most unmistakable house is control on the root as tiny , pearl - like people . intervention of Cactus Cyst is difficult and seldom successful , so prevention is the Florida key . First , pot the plant in tonic , sterilized soil inside an fresh pot and keep it off the ground to throttle tangency with infected grunge . If an plague occurs , discard the plant to keep the pathogen from spreading .
flushed or purple - tinged foliage and wilt are two coarse magnesium insufficiency symptoms , a common complaint in Christmas Cacti . It come about primarily during the winter when feed and watering are trammel , and cold temperatures slow the plant ’s nutritious uptake . In wintertime , the cactus does best at temperatures around 55 to 65 ° F ( 13 to 18 ° C ) . correct a magnesium lack can be done with Epsom salinity . It unremarkably helps render a supplemental feeding of 1 teaspoonful of Epsom salts dissolve in one gallon ( 3.8 cubic decimeter ) of pee . Pour the miscellanea into a spray bottleful and spritz the tops and undersides of the foliage . Reapply the mixture every two weeks until the foliage recall to its original color .
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