Aloes in Arizona: Updated Observations

Use this forum to discuss matters relating to Aloe, Gasteria, Haworthia and related species. This is where one posts unknown plant photos for ID help.

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eremophila
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Re: Aloes in Arizona: Updated Observations

#51

Post by eremophila »

The late appearance of damage/loss reminds me of how aloes also do this after freezes sometimes. I've had taller growing species show some leaf tip damage in some years and just hang out for the rest of the cool season, only to topple over when more favorable temperatures return in spring. It's almost like, whether during the summer heat or the winter cold, the plants sit in a kind of stasis/dormancy where the transpiration process has slowed or stopped and then once it resumes, these hidden problem spots within the plant become impacted by the process and the demise reveals itself, often suddenly. Aloes, among other succulents, have some very cryptic traits and I think, for me anyway, that's part of the appeal. I've always wondered how long a flower bud hides in the stem before it appears and how long ago the trigger took place to set off the bud to form in the first place.

Sorry for everyone's losses this summer. The tall stemmed plants can be pretty devastating since they take up such significant space and are often focal points. In a neighborhood across town from me there used to be two large Aloe marlothii in a front yard and one died last year. I noticed the crown fell out onto the ground as I was driving by. The lone plant that remains appears to have taken a hit this summer as well, but I haven't seen a mess of leaves on the ground like the other one had, so maybe there's hope for it. Time will tell.

Not much else really changed from the last time I posted to this thread. I think the kouebokk. were the last of the big losses for me. I've dug out a few things that never did much anyway and returned a few plants to pots that lost the shade they knew when branches from the tree fell in one of the storms. I will now rant about a tree that I despise: Caesalpinia mexicana is a total garbage tree and I wish sometimes that it would just blow away. If it's not dropping branches, it's dropping flowers, then seeds, then seedpods, then more flowers, then more seeds, then more seed pods and then it drops a bunch of leaves in winter. The seedpods are explosive, so the seeds scatter about the yard, germinating all summer long despite me begging the doves that come by to eat all the seeds they could possibly want and to tell their friends about them. It wouldn't be so bad if it only bloomed once a year, but the near-everblooming nature of this tree and the litter that follows is a war I'll never win. Ugh.

Otherwise, mornings are in the low 60s and upper 50s at times lately. I've brought out my pots of winter-growing bulbs from the garage so they experience the cooling nights and start to wake up. The Ariocarpus have been flowering the last couple days, which means that autumn is definitely here. Some aloe hybrids involving africana, hemmingii and tororoana are flowering or just finishing. Plenty of evening primrose seedlings popping up where I water lately. Looking forward to the winter. :))
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Re: Aloes in Arizona: Updated Observations

#52

Post by Aloeotoflove »

Mehlol wrote: Tue May 02, 2023 7:11 pm My apologies. My flowers get hit by frost hard every year. The inflorescence is not as cold hardy as the plant itself. I have covered the flowers with limited success. I don’t get many winter deaths (even uncovered). I’m west of Silverbell on a hill with good cold drainage.

I do really like tree aloes haha
I am also a huge fan of aloe trees!!
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Melt in the Sun
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Re: Aloes in Arizona: Updated Observations

#53

Post by Melt in the Sun »

A. gariepensis seems to be missing its core. The plant feels totally solid - I can't pull out any of the green leaves...I guess we shall see.
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Re: Aloes in Arizona: Updated Observations

#54

Post by mcvansoest »

I would try to use some kind of anti fungal/bacterial powder if you have it. It has been my experience that unlike some other summers when crown rot happened to some plants but was not super invasive, this summer any kind that developed crown rot pretty much bit the dust... initially they would just look like yours with the core missing - leading me to think they will be OK, but then a week later I could tell the rot had spread down the stem. Leaves would be solid but would start to dry out and die back from the tips.

I hope it survives!

This coming weekend I will probably be able to produce my final list of victims and survivors as I am planning the great clean up (first weekend slated to be solidly below the 90s).
It is what it is!
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Melt in the Sun
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Re: Aloes in Arizona: Updated Observations

#55

Post by Melt in the Sun »

Yeah that's probably a good idea...I've got soil sulfur here for the citrus, so will grab some dust from the bottom of the bag and put it down there.
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Re: Aloes in Arizona: Updated Observations

#56

Post by Melt in the Sun »

@eremophila how did your Kalanchoe do? Any survive? Been thinking of trying some...
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eremophila
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Re: Aloes in Arizona: Updated Observations

#57

Post by eremophila »

Melt in the Sun wrote: Fri Nov 17, 2023 12:58 pm @eremophila how did your Kalanchoe do? Any survive? Been thinking of trying some...
The ‘Oak Leaf’ cultivar has always done the best and still proved its worth this summer. It will grow in dry places and be fine. Under trees without totally etiolating. If it has been in the ground for a few years and freezes down, it comes back from the roots. It makes aerial roots easily and you can cut those branches off to plant elsewhere. I wish other plants were so easy going!
The K. milottii (a parent of ‘Oak Leaf’) also did fine in the ground, but a potted one had to be moved to more shade.
As for the forms of K. beharensis I grow, ‘Crinkle’ and ‘Maltese Cross’ fared the best while the plant that Rancho Soledad sells to big box stores looks the worst and is the slowest to recover. All three of these sit in the same shady spot in summer and get moved to the same sunny spot in winter, so none get any different treatment. There used to be a clone called ‘Napoleon’s Hat’ or just ‘Big Leaf’ back in the 90s that was sold around AZ at the time that did better than Rancho’s clone, but I haven’t seen any verifiable clones of it around since that 2007 freeze and it may well be lost to time.
Of course, the Bryophyllum hybrids/forms that go by ‘Mother of Millions’ all did fine, didn’t even blink. I’ve thrown plantlets in some very unkind locations and they don’t seem to care. I know for some they’re weeds, but it’s a succulent weed that does well, looks cool and has nice flowers. I’d rather those be weeds in the yard than the annoying native Amaranth or invasive Stinknet.
I have a K. humilis in a pot that didn’t look super happy over summer but it’s totally fine now and sending up its rather boring flowers.
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Re: Aloes in Arizona: Updated Observations

#58

Post by Melt in the Sun »

Hopefully the last casualty - I tried to pull this one out to check the roots (since it hadn't plumped up) and pulled the top off. ~13 year A. karasbergensis. Time to get another one.
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