Adeniums forum: Curling adenium leaves

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sarahbean19
Sep 13, 2018 11:57 AM CST
Hello,

I live in Phoenix, AZ. My adenium is placed where it gets about 4-6 hours of full sun daily and I've been watering it about once per week. Lately, I've noticed the leaves are curling on the edges and growing upward. I left the plant on my patio for about a week during some rainy weather and the leaves relaxed and straightened out. It was only getting about 2 hours of late afternoon sun then. It looked better, but it's my understanding that these plants require and thrive with A LOT of full sun. So I'm confused about why more sun = upward growth and curling leaves. Any guesses? I've tried doing some online research without much success. I've attached photos for reference. These were taken on 9/3/18. Ten days later, it looks about the same. It's continuing to get new leaves though and nothing is turning yellow.

Thanks for the help!

-Sarah

Thumb of 2018-09-13/sarahbean19/c8cafd
Thumb of 2018-09-13/sarahbean19/74cc23

Name: tarev
San Joaquin County, CA (Zone 9b)
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tarev
Sep 13, 2018 12:16 PM CST
Hello Sarahbean19, they do like lots of full sun, the more heat and direct sun the better. However, you will have to treat them like tropical plants during those conditions. You have to water them frequently, I have to water mine daily when we are hitting 90F and higher. We got very, very dry conditions here too, humidity so lousy.

I looked at your area's weather forecast and your conditions they are still very, very hot, so it is okay to water them daily. Just make sure you remove the excess water if any in the drip tray you have, though I seriously doubt it will accumulate any with the excessive heat conditions you have, unless of course you get occasional downpours.

I start doing watering intervals again, when temperatures starts to go down, like right now, we are back into the high 70F's for our daytime high, Usually in summer we were peaking at 100F to 105F and humidity at 20% to 0%. I also monitor our overnight temps, so like this time, we are getting early Fall like conditions, getting low 50F's overnight. I am just bidding time a bit, would surely start bringing my Adeniums indoors, it is already showing me leaf drop, as it gets ready for dormancy. So I have been doing watering intervals now.

Pretty much observe your ambient conditions, your daytime highs and lows. If you are still hitting 100F, it can take daily watering gladly.
[Last edited by tarev - Sep 13, 2018 12:20 PM (+)]
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sarahbean19
Sep 13, 2018 12:21 PM CST
Thank you! I've been hesitant to water it that much because I know it retains water in the caudex and stem but I will give it a try. It makes sense to think of it as a tropical plant.
Name: James
North Louisiana (Zone 8b)
deepsouth
Sep 13, 2018 12:26 PM CST

if the plant is getting sufficient water, and sunlight, the upright leaves are normal ..... especially at, or near the ends of stems ....lower down the stem, leaves tend to become horizontal

if the plant does not get sufficient water, or sunlight - leaves tend to droop

not sure what is causing the leaves to "curl" or cause the "wavy" like leaf margins ....a guess, think it is due to a lack of one or more of the many micro-nutrients - in no specific order - those are:

iron (Fe), boron (B), chlorine (Cl), manganese (Mn), zinc (Zn), copper (Cu), molybdenum (Mo), nickel (Ni)

look on the fertilizer you have been using ....does it include all or any of the above ??

Name: Karen
NM (Zone 7b)
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plantmanager
Sep 13, 2018 12:29 PM CST
I've had Adeniums in Phx and I did have to water them every day during the summer. Don't forget to take yours inside somewhere for winter. I froze mine one year when an early freeze hit it outside.
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sarahbean19
Sep 13, 2018 12:35 PM CST
James, thank you for the advice on fertilizer. I am using a 13-13-13 fertilizer by Carl Pool. It does not contain chlorine (but our water does) or nickel.
Name: tarev
San Joaquin County, CA (Zone 9b)
Always count your blessings in life
Cat Lover Houseplants Plays in the sandbox Region: California Orchids Plant Lover: Loves 'em all!
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tarev
Sep 13, 2018 12:40 PM CST
Hello Sarahbean19, I actually spritz the entire caudex and branches, next to really drenching the media. Humidity is so low anyways during the peak of summer, I can even see that within a minute it has dried off from the surface of the plant. Do your watering early in the day, before the hot sun hits it. I know my media is very coarse and gritty so I am not afraid of having root rot here when I do my daily watering in summer.

It will be concerning for the caudex if your media is not well draining, and I can see it looks well draining. Just be careful that it does not sit in water, got to let that excess water out.

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