First you need to understand their ecology..they grow under bushes, in crevices, hidden in grass and only a few grow in the open (H. coactata is one of a few). Most other do not. This protects them from direct sun. They also occur in winter rainfall region (again not all), but most do.
Well-drained soil means different things to people, some use pure pumice others a mix of potting soil, sand and perlite and various other combinations, but as long as it drains well.
Back to its nature, Haworthia has this ability to use old roots as a form of compost for new year growth, so they generate a lot of new roots late summer/early autumn, which is a good time to transplant.
So the main times for growth is around Autumn and Spring, and depending on your own situation winter can be slow or none, but on the hottest period of summer they shut down and rest.
This then tells you that Autumn and Spring would be more water needed (1xweek say) and winter (2-3 weeks) and summer hot no water. Why, because they will not accept water or will not have proper roots to utilize water, this is the danger time and where you can easily rot them.
Please note that I am referring to hot summer and around autumn, we should not block it off as defined months, it depends on the area you live and conditions you cultivate them in. Rather understand the cycle, then you will not get confused.
I have mine in good light situation with some early morning sun. I water them in early summer and but for a few weeks mid-late summer (really hot here)- they are still protected because otherwise they will cook. I use a loose mix of potting/sand and perlite. I dry them out between deeper waterings but I do mist them also.
Hope it helps
Cheers
Rian
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For wet and humid climate
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