Trachycarpus problems

[TerdalFarm]

Palms in general are doing well here if they survived the "colder than the south pole" February.
Sabal "Lou" and mexicana are growing well, as is the avatar Butia and the new Butia. The surviving needle palm is doing well, and the four-years-in-ground Chammie is having its best year ever.
The two Waggies which had electric heat in February are doing OK. They have stopped growing, but Trachy always do that for me when it gets hot.
It is the three regular T. fortunei I am concerned over. They were covered but not heated in winter. Defoliated, but all three grew in Spring. One small one had spear pull last month. I finally did the trunk-cutting thing but no green anywhere and no growth. The tallest was looking OK until the past week. The fronds (all new this year) turned brown and soft. This morning, it all pulled. Not one speck of anything green is left. I'll pour in some H2O2 but I'm not optimistic. The third (small) T. fortunei looks good. I'll add a photo, but basically it looks like a healthy windmill (well, after defoliation).
My best guess is that this is a lingering effect of fungus from after the winter freeze. We have had no rain, so it is not from water in the crown. I water the ground well, but have been careful not to let water from the hose get into the crown.
Does my diagnosis make sense?

[hardyjim]

Probably was root rot from cold winter soil.

[TerdalFarm]

Certainly plausible, Jim. The soil never froze here under the deep snow (unlike the previous year) but was cold and damp in late Feb/March. But other palms I think of as less cold-tolerant are alright.
The largest Trachy, which just succumbed, is near the siam ruby banana so maybe its roots got too wet in summer? Is that possible? If so, I'll be careful with the waggies which are also nearby.
I'm afraid I think of regular windmills as disposable (sorry, Barb!) but the waggies are harder to come by--both were mail order palms. If I can figure out the problem (e.g., root rot), I want to keep it from getting to my more special palms.

[lucky1]

No apology necessary Erik, about Trachies.
I am so sorry yours are failing, especially since last winter's root conditions were OK (not a hard freeze).
But the fronds took the hit without heat.

You'll remember a year ago (or so) we were all guessing about reasons for palm mortality.
The suggestions ranged all the way from fungus/rot to "too hot" soil with chicken manure possibly damaging sensitive roots near surface.

As to summer water, I don't think I could give my Trachy TOO MUCH water.
They're thirsty when it's hot.
And you've had it hot.

IMO, I think the above-ground growth got far too cold last winter (while roots stayed reasonably warm under snowcover).
I suspect your extreme heat may be finishing them off, despite your watering the soil.

I doubt the death veil will "spread" to your other palms.
It's the Trachy curse.

Barb