Old Chamerops Humilis health concern

[Coasta]

Hello all! I maintain a few chamerops humilis that are located at the entrance of our neighborhood. I noticed two of them that are about 6ft tall are looking a little strange. The first one has fronds that are lating down. If you see on thr inside, it looks like some deformed leaves have come out. What could have caused this? Will it survive? 

The second palm has a few closed fronds growing, and it looks like it hasn't put out any other additional leaves this summer. I did tug on one of the fronds and felt a slight give, then I stopped. Thoughts on that one? Any suggestions to help these palms? I would hate for them to die since there so slow.

[aztropic]

This is pretty much a bullet proof species in Arizona when provided water in the summer, and NOT OVER TRIMMED.

Whoever does the trimming on these palms has put them into a death spiral. Notice how the one palm is penciling down in trunk thickness? That's not natural,and is most likely the result of over trimming.

If palm fronds are turning brown prematurely causing them to be trimmed off,problem is almost certainly lack of water. Drip systems need maintenance and are easily plugged up with the minerals in our water. Make sure you SEE actual water going to those palms. 

 

aztropic

Mesa, Arizona 

[Coasta]

Aztropic, what are the chances of both of them surviving? We have gotten a lot of water this summer and there well established. My guess is at least 10 years in ground.  Should I pour hydrogen peroxide down? Also the last trim was back in May and prior to that december, and before that a year ago. 

[aztropic]

MAKE SURE they are receiving irrigation water - 5 gallons at a time, once a week over the summer months. These trees look like they are not receiving ANY extra water,hence,little to no growth and fronds not opening.

 

aztropic

Mesa, Arizona 

[Merlyn]

@Coastathe first palm does look like it has (or had) a fungal infection in the crown.  The rachis are sort of purple-brown in a couple of areas, which is definitely not normal.  I don't know if it could be sunburn though, instead of a fungus.  Aztropic I'm sure knows a ton more about these palms, especially in AZ.  I'd think a squirt of hydrogen peroxide couldn't hurt, though it seems like it's mostly a lack or water or lack of water uptake.  I had one doing this here, mine turned out to be a combination of crown rot AND root rot.  So I'd recommend 3 steps:

• Squirt a bit of hydrogen peroxide into the crown, just to rule out a crown fungal infection.  Palm 1 seems possible, palm 2 seems unlikely.
• Check the water supply as aztropic said.  If they aren't getting water that's an easy fix.
• If they ARE getting plenty of water, it might have a root rot.  A soil drench of Banrot, Fosetyl-Al, Mancozeb, Daconil, a copper-based solution, or Captan might help.

For my Humilis I did hydrogen peroxide in the crown and a soil drench of Banrot.  This is what the crown looked like:

[Coasta]

Thank you both, I will need to find out when the water turns on for these palms since they are in the front of the neighborhood and they are by the main road. I will also put the hydrogen peroxide in both crowns. Chances of them bouncing back? 

[Fusca]

20 minutes ago, Coasta said:

Thank you both, I will need to find out when the water turns on for these palms since they are in the front of the neighborhood and they are by the main road. I will also put the hydrogen peroxide in both crowns. Chances of them bouncing back? 

I agree with the others.  Another thing to check is how the palm is receiving supplemental water.  Chamaerops humilis don't like overhead watering in the crown which can cause rot - make sure that it's getting watered at the base and not from overhead sprinklers.

[andresbloom]

It is cool photo

[Alberto]

On 11/4/2022 at 12:20 PM, Coasta said:

Hello all! I maintain a few chamerops humilis that are located at the entrance of our neighborhood. I noticed two of them that are about 6ft tall are looking a little strange. The first one has fronds that are lating down. If you see on thr inside, it looks like some deformed leaves have come out. What could have caused this? Will it survive? 

The second palm has a few closed fronds growing, and it looks like it hasn't put out any other additional leaves this summer. I did tug on one of the fronds and felt a slight give, then I stopped. Thoughts on that one? Any suggestions to help these palms? I would hate for them to die since there so slow.

How they look, one year later?

[andresbloom]

On 11/4/2022 at 7:09 PM, Merlyn said:

@Coastathe first palm does look like it has (or had) a fungal infection in the crown.  The rachis are sort of purple-brown in a couple of areas, which is definitely not normal.  I don't know if it could be sunburn though, instead of a fungus.  Aztropic I'm sure knows a ton more about these palms, especially in AZ.  I'd think a squirt of hydrogen peroxide couldn't hurt, though it seems like it's mostly a lack or water or lack of water uptake.  I had one doing this here, mine turned out to be a combination of crown rot AND root rot.  So I'd recommend 3 steps:

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For my Humilis I did hydrogen peroxide in the crown and a soil drench of Banrot.  This is what the crown looked like:

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