I live in the south of Spain and I've had my two oldest Lophophora for 11 years - from the size of the plants I've grown from their seed, I'm guessing they were a good 4-5 years old when I got them. We get up to 40 plus degrees in summer and down to a couple of degrees below zero in winter and they stay on the outside windowsills all year. They're potted in a pretty ordinary cactus mix with chips of local dolomite limestone added and top dressed with the limestone for the oldest plants and baked clay pellets for the others. Our tap water has a high calcium content and that's what I use - I've never lost a single plant including the second generation from seed which are now about 7-8 years old and flowering regularly. I had an infestation of root mealybug a while back so I unpotted the affected plants, washed the tap roots carefully and treated them with a cinnamon bath and they're all fine now. Truly wonderful plants!!

My experience is clay pots are best as they dry quicker than plastic. Helps prevent rot from overwatering. (I love to water plants) As with the original video, very good information. In our area tap water is full of chlorine all year long. If you let the water sit for 24 hours the chlorine evaporates. The other problem is in the winter and more so spring when the road salt is running from the roads inot the water supply. It increases the salinity of tap water and that can't be removed. Some plants are sensitive to this but I have no idea if lophophoras is or isn't. I do use un-boiled rain water and have had no problem. Boiling it won't cause a problem. Thumbs up.

Great video Henry with lots of very useful information with growing these awesome plants. Thank you for sharing with us. Have a great evening from Edith & myself. Happy growing 🌵☀️🌼🏜

Lophophora are such a great genus sucks that williamsii are illegal in the u.s

I learnt a lot listening to that . Very well explained 👍😊

Awesome info thank you so much for the video buddy

Hi Henry, very interesting infos and very well explained, many thanks for sharing! Kind regards and best wishes, happy growing!! 👍🌵

I water them when they wrinkle up a bit. Usually, it takes up to two months.

The matter with the distilled water is more complex. It is not directly harmful because it is going through the soil first, an thus mineralizing itself in the process. The "problem" is that plants themselfs acidify the soil they are in over time. In the ground, this is balanced out by the surrounding soil, in pots it is either done with adding lime or simply tap-water that contains some lime. If you only use soft or distilled water, the acidification is unaltered. BUT: Your plants may actually prefer acidic soil, so it is not even a problem at all times...