I guess this is the German and also Canadian definition about "hardiness" regarding cacti. For example, our Calgary minimums in summer are about 10 - 12 C and many of my cacti will not grow in these conditions so I keep those indoors only.They have been outside during summer, so they are hardy.
Re: hardy cacti
Re: hardy cacti
If your cacti mess in your job just forget about the job.
°C = (°F - 32)/1.8
°C = (°F - 32)/1.8