Washingtonia robusta divided and repotted looks unhealthy

[Basti]

Hello everyone, I bought a multi stem robusta around 2 weeks ago and decided to divide the 4 stems into one single stem and a trio. After reading in this forum and watching tutorials on how to do it, I divided them carefully and with rarely any root loss. The first picture is how they looked like right after the separation. While the trio still looks the same more or less, the single stem looks desaturated and the leaves are tightened up (like in the two last pictures). It has been pretty cold in the past nights but nothing below 0 degrees Celsius (32F) the new leave seems to still grow and still looks good. 
What’s wrong with my plant and can I do something to make it look healthier?

thanks for every answer

[SeanK]

No plant likes root disruption. However, it it was better to do this now, while they're small. I would have dusted the roots with a rooting hormone. 

I believe that Washingtonia prefers higher light levels, so outside starting in partial sun would be better.

 

[Basti]

Thank you so much for your response, I didn’t hear about rooting hormones until now, otherwise I would’ve used it. They are standing in my garden with a lot of sun and a lot of sunny days. But it’s not at the edge of dying right? 

[SeanK]

I don't think any are dying, no. 

However, I would limit the hours of direct sun each day. Let them have morning sun until 11 AM for a few weeks, then increase by an hour every 2 weeks.

[Basti]

Ok good, I will do it like that, thank you very much

[PindoPalm]

Washingtonia thrive in full sunlight here in Arizona i would say to dust the roots and water it really well until it is set. You may not be wrong though i was just pointing it out. 

On 4/23/2024 at 12:38 PM, SeanK said:

I don't think any are dying, no. 

However, I would limit the hours of direct sun each day. Let them have morning sun until 11 AM for a few weeks, then increase by an hour every 2 weeks.

 

[Harry’s Palms]

My neighbor ( actually a block away )had one growing in his yard that was a volunteer. It was not much bigger than yours. He dug it up and left it with some dirt in a pail in my courtyard . I had just moved here and he saw all the palms I was planting. I planted down at the bottom of my hill where it is south facing full sun. It never missed a beat . Arizona sun is much different than Southern California but I would expect them to survive. Harry

[Merlyn]

I'd follow @SeanK's advice - any newly separated palm will lose most of the fine roots, so it can't handle full sun immediately.  I did this with an overpotted set of Livistona Chinensis several years ago.  I kept them in my seedling nursery area with full AM sun and pretty much full canopy shade after about 11AM.  They got plenty of water from a small fan sprayer-on-a-stick every day.  I only lost one of them, because it ended up out of range of the sprayer at one point.