Some palms showing spots and browning not sure what it is

[FallbrookCA]

I have some palms in pots that have recently started spotting and some fronds turning brown in sections. My thoughts are it may be from too much water as its been raining a lot lately with not much heat during the days to dry it out. One palm just got some spots after I might have got some overspray of daconil, and I think that's what caused those, but I may be wrong. Also we have had some very cold nights, no frost on the lawn but maybe 15 feet away in a lower area there has been frost. First pic is a baby bottle palm, looks horrible now, second pic is a dypsis pembana, third is a small teddy bear palm, fourth is a dypsis lanceolata which is the one that might have got daconil on it

[FallbrookCA]

[Jdiaz31089]

That looks like frost damage to me, especially given the tender species you listed, but perhaps others will either confirm or debunk that.

[quaman58]

It is cold damage. Get used to it living around here!   Many of the palms we grow well here seem to have a good cold tolerance down to 30f or so, without any damage at all. The next group that will grow here but damages every year seem to resent anything much below 40f. Palms like Hyophorbe, Dictyosperma, Veitchia & even Wodyetia. But the latter group seems to carry on regardless, especially as they get some size. Regarding cold, we're right in the middle of the worst, most damaging 6 week period of the year. 

[Palm Tree Jim]

9 minutes ago, quaman58 said:

It is cold damage. Get used to it living around here!   Many of the palms we grow well here seem to have a good cold tolerance down to 30f or so, without any damage at all. The next group that will grow here but damages every year seem to resent anything much below 40f. Palms like Hyophorbe, Dictyosperma, Veitchia & even Wodyetia. But the latter group seems to carry on regardless, especially as they get some size. Regarding cold, we're right in the middle of the worst, most damaging 6 week period of the year. 

Great summary.

[atlantisrising]

Here in South Florida with that type of necrotic spotting the first suspect would be lack of potassium which first shows a yellow orange spot then progresses to necrosis. Second suspect would be Helminthosporium leaf spot, a fungus that develops on the underside of leaflets in wet damp conditions. Since I'm not as familiar with cold damage as the previous posters are, go with the local knowledge and experts.

[NatureGirl]

I had a similar looking incident on some of my 1 gal size palms. I finally realized that I had sprayed some 'raid' on a palm that was growing above them (because it had a wasp nest in it). And the 'raid' had dripped down on to them and damaged them. That's kinda what it looks like to me, some sort of other damage like that.

[Ben in Norcal]

This pretty much sums up the difference between growing in California and Florida.  

It's cold damage.

[Hammer]

Yep, cold damage.  I get this every winter on some of my Dypsis,  Ptychosperma and Hyophorbe.