fusarium wilt Washington robusta fusarium wilt

[Mia]

[Mia]

By there, I posted one of my palms. I am interested about this problem. Recently I bought a second palm which had some yellow leaves. Searching on the web , what might that be, I found fusarium wilt as one of the reasons… now there is little bit panic. Any good advice or comment please. 

[deezpalms]

I don’t think it can get fusarium wilt. As far as I know only canary island date palms are susceptible. I think you just need to fertilize and use additional iron.

[Mia]

Unfortunately they can get it! 

[UK_Palms]

A lot of palms can get Fusarium Wilt, including Washingtonia. I didn’t think it was really present in Croatia though? It is more of a tropical disease experienced in hot-wet climates, but I could be wrong. I think I remember hearing about outbreaks in Southern California possibly. I think your palm is just suffering from a bit of cold damage from winter, which it should grow out of.

[Mia]

I dont know about Fusarium in Croatia, but the thing is I bought them two months ago and I don’t know from where they are coming. That’s why I am asking. I really hope this is not the case here.  Thank you guys I really appreciate any information 

[PalmatierMeg]

Washies get fusarium wilt, as do some Syagrus, mule palms, Phoenix. I lost my Washy, queens and mule palms to wilt. Fusarium wilt is currently untreatable and always fatal. You should remove and destroy affected palms and not plant those species again. Is wilt in Croatia? I don’t know but that’s possible. My condolences.

[Mia]

I am not sure Is it here or not. I was just trying to find what could be the reason of those yellow/ brown leaves. I am waiting some more informations about it , but the time is killing me. Specially the third palm is coming in 10 days. I am just little bit in panic specially because my neighbour also bought Washingtons - 4 of them .. can you imagine what is going to be if this is the case 

[UK_Palms]

It’s probably just a combination of transplant shock and wet-cold in winter that has caused them to incur a bit of damage. I suspect they will grow out of it and look fine in a couple of months. I doubt it is Fusarium wilt, which to my knowledge isn’t really common at all in Europe, especially in the Med region. We certainly don’t have it over here in the UK. I wouldn’t be too concerned at this stage unless they continue to get progressively worse in the coming weeks.

[Mia]

Thank you, I really needed to hear that! Can you guys please tell me about watering them. They are so high I don’t know how much water they need and how often do they need water. It’s pretty much warm here during summer, we are really cooking on some high temperatures during summer periods, spring and autumn are also very hot, winter is so so, nothing special… all in all very dry hot Mediterranean area. Can you please give me some tips about watering. 

[Merlyn]

There are two species of Fusarium that infect palms. Fusarium oxysporum sp. canariensis will infect many palms in the Phoenix family, but especially Canary date palms.  The other one is Fusarium oxysprum sp. palmarum.  It goes after Syagrus Romanzoffiana (Queen palms) and Washingtonia Robusta, and can also infect Mule palms (Queen x Butia).  It's known to kill entire rows of Washies really fast. 

I had one queen on the SE corner of my house catch Fusarium.  I removed it as soon as I noticed the tell-tale "one-sided leaf death" and was careful to cut off fronds with a pruner and slice the trunk with a reciprocating saw.  This made the least amount of "dust" possible, hopefully keeping me from spreading it around the yard.  I bagged up the remains and put it out for the garbage pickup.  I treated the other 8 queens and 1 mule on my property with Banrot.  So far (knock on wood) it has not spread to the others.  It's been 2 years, so I might have caught it fast enough and been careful enough removing the infected palm.  Banrot is claimed on the label to work on Fusarium, but I have no idea if that's actually true.

Mia, for your palms I'd look for the "one-sided leaf death" to see if it's actually Fusarium.  Frequently you'll get "transplant shock" early leaf death after transplanting, and leaves also die off faster than normal coming out of winter.  Here's the best document I've found on Fusarium: https://ucanr.edu/sites/HodelPalmsTrees/files/336533.pdf

[Mia]

2 hours ago, PalmatierMeg said:

Thank you so much guys on advices 

[Mia]

Meryln I saw a document, it’s really shocking… and I am really sorry that you are dealing with this disease in USA. I really hope it’s not the case in Europe.. I will do what you recommend 

[mydateplams]

Looks like transplant shock and wind burn. Seems healthy to me. These palms are like weeds and it will turn around after one season. 

[Mia]

Yes it’s windy for the past 2 months , wind from the sea is very warm but annoying. The second palm came with few different leaves at the bottom, after transplanting they become more yellow and brown. But there are new leaves at the center very green and healthy. 

[Merlyn]

It is normal for a transplanted palm to "eat" the oldest leaves pretty quickly.  This typically happens within a few weeks of transplant.  As long as the new fronds are growing consistently and nice and green, it's probably fine.  If it has been ~2 months since the transplant then you can apply a handful of "palm special" fertilizer to both of them.  Just make sure it is a timed-release nitrogen and has a micronutrient mix suitable for palms.  Sprinkle it evenly under the canopy, not in a clump.  You don't want to fertilize too soon after a transplant, as it can burn the new roots.  A general rule of thumb is 1.5lb of 8-2-12 fertilizer for every 100sqft of canopy.  So for a 10' diameter palm you have about 80sqft, and should use around 1.2lb (0.55kg) of 8-2-12.  If your fertilizer is more concentrated then reduce the amount you use.  It's better to fertilize a bit less (and more often) than to fertilize too much and burn the roots.

[Mia]

I bought palm focus and palm booster , I didn’t use it still. It’s that ok ?  

[96720]

Newly planted palms that size need lots of water until their root system’s are established!!

[PalmatierMeg]

17 hours ago, Mia said:

I bought palm focus and palm booster , I didn’t use it still. It’s that ok ?  

When did you plant your palms? If quite recently give them a few months to settle in before fertilizing. Hitting newly planted palms with fertilizer is not a good idea, esp. coming out of winter. They have enough issues dealing with transplant shock.

[Mia]

16 minutes ago, PalmatierMeg said:

When did you plant your palms? If quite recently give them a few months to settle in before fertilizing. Hitting newly planted palms with fertilizer is not a good idea, esp. coming out of winter. They have enough issues dealing with transplant shock.

2 and half months ago .. i didn’t put fertilisers yet. So maybe one more month , than I can put it or to wait even more? I never thought transplant shock is so difficult for plants. But definitely good to know all the details. I just started to learn about palms. Thank you 

[PalmatierMeg]

June 1

[Mia]

3 hours ago, PalmatierMeg said:

June 1

Ok , will do that