Saturday at the Garden, February 9, 2008

 

Brian Kemble's List of Hardy Aloes  
Species Minimum Temp observed in cultivation (°F) Minimum Temp recorded in   habitat (°F) Comments Winter Grower
aculeata 20 22    
adigratana 28-30      
affinis   22    
africana 25 32    
alooides 27 29    
ammophila 25 28 survived with leaf damage at 25°  
angelica   29    
arborescens 19 29 killed below 19°; fairly hardy and very wet tolerant  
aristata 19 13 very cold hardy, can rot with insufficient drainage  
asperifolia   25 cold hardy, can't tolerate too much rain in winter  
berhana 20   leaf damage at 20°  
branddraaiensis 25 22    
brevifolia 20 25 quite cold hardy and wet tolerant X
broomii 20 17    
buhrii 25 27 performs well in S. California X
burgersfortensis 25 28    
cameronii upper 20's   some clones hardy to upper 20's, others tender  
camperi low 20's   bad leaf damage in low 20's  
candelabrum low 20's 28 flowers damaged in the low 20's  
capitata var. capitata low 20's   leaf damage in the low 20's  
capitata var. quartziticola low 20's   leaves OK, flowers damaged in the low 20's  
castanea 20 30    
ciliaris 20 20    
claviflora 20 24 rots easily if wet too long, but hardy to 20°  
comosa 28 30   X
comptonii 25 27 under tree cover at 25°  
cooperi 25 29 leaf damage under plastic cover at 25°  
cremnophila upper 20's   undamaged under tree canopy in upper 20's  
davyana 20 19    
dichotoma upper 20's 24   X
divaricata 20   severe damage at 20°  
distans 20 34 very hardy and wet tolerant X
dumetorum 25   leaves damaged at 25°  
dyeri   28    
ecklonis   17    
elgonica 25   bad leaf damage at 25°  
erinacea   27   X
excelsa low 20's 37 leaf damage in the low 20's  
ferox 20 24 flowers damaged at 20°, leaves OK  
fosteri 20 22    
framesii mid 20's 34   X
gariepensis   23   X
glauca mid 20's 27 very hardy and wet tolerant X
graciliflora   26    
gracilis   26    
grandidentata low 20's 19    
greenii mid 20's 37    
hereroensis   21 needs excellent drainage to survive wet winters  
hildebrandtii upper 20's      
humilis low 20's 25    
immaculata   28    
inyangensis mid 20's   heavily damaged at 20°, OK under cover to the mid 20's  
juvenna low 20's      
karasbergensis   21 needs excellent drainage, little summer water X
kedongensis mid 20's   moderate damage at 26°, heavily damaged at 20°  
keithii   26    
khamiesensis   24 needs excellent drainage, little summer water X
komatiensis   24    
krapohliana   28   X
lateritia low 20's   leaf damage at low 20's  
lineata 20 20    
littoralis   26    
longistyla   20 sensitive to wetness, rots easily  
lutescens mid 20's 37 mid 20's under cover  
marlothii 20 22    
melanacantha   28 needs excellent drainage X
microstigma low 20's 27    
mitriformis low 20's 34   X
mudenensis mid 20's 26 flowers damaged mid 20's  
mutabilis   21    
mutans 20 30    
namibiensis   25 very sensitive to wet conditions  
ortholopha mid 20's      
pachygaster   20 very sensitive to wet conditions X
parvibracteata   24    
pearsonii   27 very sensitive to wet conditions X
peglerae   21 quite hardy if dry  
perryi low 20's   survived low 20's with leaf damage  
petricola low 20's 28    
pillansii   27 very sensitive to wet conditions X
plicatilis 20 20 blackened leaf tips in the 20's, killed in the teens, likes lots of water X
pluridens low 20's 28