I think it will be fine so long as you keep it above freezing. Maybe even a little below freezing, but this doesn't sound like the plant to experiment with. I've had my Haworthias down almost to freezing and anything I can do in my climate, you can do in yours. Trying to keep it in conditions where the temperature stays below 40F even during the day would likely lead to trouble.

P.S. Don't get too excited about the flowers ;)

Hello shrubs_n_bulbs, good to hear from you again!

I recall your saying the blooms would less than memorable, lol, guess I'm just grateful it's healthy enough to try!

My thermometer is reading mid 60s yet daytime. Southern exposure helps this time of year, but I'll keep watch on the weather

Apparently the plant belonged to a long-time breeder/collector couple that was breaking up and selling off a lot of their collection, I believe for health reasons. Makes me feel as much a steward as anything...

An a slightly different note, any suggestions for cleaning it? It has got a bit dusty from being outside, and our water here spots like mad. Are those leaf cleaning sprays safe?

Thanks again!

The Huntington Gardens grow Haworthia on top of upside down flats, one on top we put 25 small 4" pots in the flat and they are under the bench, so not to get frost bite, they made it through the winter, hold back water, only water if you know that there will not be rain for about 10 days, then water well. Let the mix dry out between waterings.
They should start putting on new roots now. Make sure they get about 4 hrs sun daily, but not not direct sun. I think it's going to be okay. I think you have temp. like that of Africa. Ours went through 21F
for several days, no harm, it should be putting out new roots this time of year, it it goes much below thirty, cover it with a jar, or plastic for the night. Here I must grow them in partial shade. Just be careful how often you water, and when you do make sure it's not going below thirty that night. If you are afraid, it wouldn't hurt to bring it in for the night. Norma

Most Haworthia and similar succulents in nature are found growing among grasses and other shrubbery, and so are protected from hot sun.

Also, as stated by Norma, frost is not a problem as long the soil is on the dry side. Remember that water expands as it freezes, so a fully turgid plant's cells can explode (microscopically) as a result of the ice crystals being formed. It's actually collapse of the cell walls I think, but you get the point.

Cold-climate plants have chemicals in solution that have the same properties of "anti-freeze". High solute concentrations in water (solvent) help reduce the freezing point. Our succulents have a limited capacity for protection.

x

Thanks Dufflebag, Xerophyte!

The Haworthia is on a small stand next to the south side slatted rail, so as the sun moves, it is in alternate light and shade. Much like a vertical blind, which is what it would have inside. There are other larger containered plants which will also cast shadows. Overhead is a shadecloth awning, so I should be fine light-wise :)

We very seldom get rain and with such low humdity here, a top dressing is a must. In these circumstances, an educated finger isn't workable, so I'm learning to trust my moisture meter-so far its been spot on.

We get about 30 days total per year where the temps go below 32 at night, and they are seldom consecutive, so I should be in great shape following your advice!

Thanks!

My haworthia made it thru outside with flying colors, thanks to you all! And it started blooming about 2 weeks ago, each of the 3 rosettes has 2 long (abt 12-16in.) stems with blossoms along them. They aren't exciting, as you said, but still the little off-white urn shapes with the stripe on the side are pretty to a proud "Mama" ;-).

However, that being said, how much strain is that on the plant? Will allowing them to continue, or go to seed create stress, as in some plants (such as yucca, etc?)

I've been giving it a just little more water, potting mixture (custom mixed at a Cactus/Succ greenhouse) was fresh last fall. Is there anything else I should be doing? Will the commercial leaf cleaners hurt it? Its a little dusty, but suppose it could be rinsed under running water more safely...

Thanks!

flowering is a sign of health, there is no strain on the plant

don't do anything different. haworthia flowers are nothing special.

Great! Thanks!