I must confess I have been keeping Babiana of many species, from sprouts to maturity, waterlogged during the entire growing season for some 10 years without losses to rot. My seedlings die if not wet enough. (Birds and javelina are troublesome.) Mine also have experienced overnight lows into the teens F / -8C with neither foliar nor floral damage. My climate has very low winter humidity except during rain, and days following frosts are always well above freezing. Many winter days are in the 80s F / mid 20sC. I use coarse sharp sand without adulterants. Leo Martin Zone ?9 Phoenix Arizona USA