I met a super difficult situation.
I plant some peach palms in the Southwest of China,some of them are in the pots.
One week ago,the leaves of the seedlings have turned to white,in another word,lost their green.
First,the situation would be found in the sub new leaf,I mean,not the newest leaf.
Then,the newest leaf would be dead,the connection between the root and the stem is completely rotten.
I had thought maybe it was Bacterial or Fungus,so I used Kasugamycin and Pyraclostrobin.but the situation seemd not be improved.
More and more seedlings begun to show the situation.
I never saw this before,it seems that I could do nothing to stop the disaster.I give the suficient water and fertilizer,use the “drug”，but still too bad.
Have you seen this situation before?
Is this a fungal disease? Cold damage? It seems to happen during the winter and it is only on the new fronds. I saw it on a small Washingtonia before it died a few months later. Now I see it on a date. Should I treat it with something?
I've noticed some leaf damage and found two of these what appear to be caterpillar's on the new soft flush of this Encephalartos blue arenarius x latifrons. The second one I found was in the act of munching and much bigger than the first. It was still only about 1.5 cm or about .5" long. Unfortunately, my phone camera wasn't very good at focusing on it, but you can clearly see the damage on the one half eaten leaflet and the circle it's eating out of the other leaf. Anyone else encountered this insect. It was brown with the white stripe down it's back. Since it wanted to crawl away after I removed it from the plant I smashed it before it could get away and find it's way back to this or another flushing cycad in my garden. As a consequence of that action, there were no additional photo ops!
I noticed the newest spear on my Dypsis leptocheilos was opening much earlier in the process of emerging than most of the others has, and just attributed it to summer enthusiasm. I just did a closer examination and noticed that it probably opened early due to the stress of something which was munching on it before it emerged. I have seen grasshoppers do damage on exposed leaves before but not down deep like this. It appears the damage was done in the heart of the palm to me, but I can't be certain. I had some damage from a very young grasshopper which I caught trying to munch on the very soft emerging flush of my Encephalartos inopinus within the last couple of weeks. Fortunately I caught it on the second day I found it on the inopinus and was able to kill it. Unfortunately it did a little damage to a few leaves on it though. That grasshopper was only about 3/4" to 1" long, so not big enough to do the damage on my leptocheilos. Anyone seen this sort of damage before and caught the culprit, particularly if you are also here in Southern California?
The one shot of the entire palm shows that it is otherwise healthy in appearance.
Some time ago, I visited a nursery that had not-that-healthy-looking plants, from among them Cereus cacti with brown parts (instead of 100% green), and this archontophoenix palm that caught my eye with massively brown dying leaves :
When it comes to those cereus cacti, I immediately had doubts about the possibility of infectious diseases, and didn't buy anything from this nursery ;
Yet for the palm I first suspected cold-related damage and/or lack of care, but now I wonder whether this could also be an infectious disease
Do you guys have any idea what could have caused this palm to look like this ?
Thanks in advance !