Macon, GA
This prickly palm like plant was cold damaged from a few days of super low temperatures. 12 degrees

I know there's probably a good question you meant to ask?

Al

I'm sure these will not turn green again. How and when should they be pruned?

Is that a Sago palm?

@RobynBar In that state, you have the option of cutting the foliage back to the crown or leaving it. It won't matter to the plant because there is nothing in the leaves that can be 'recycled' by the plant. Typically, plants reclaim mobile nutrients and other biocompounds from leaves before they are shed, but a hard freeze disallows that from occurring. Hopefully it will start pushing new growth when temperatures are a little more favorable. Good luck, Robyn.

Al

Hi @RobynBar
Welcome to the site!
Your plant is a Cycad. It may be a juvenile Sago palm or it may be a species of Dioon. I can't tell. It may be dead, or it may not be dead.
You can safely trim off all the dead fronds. Any new growth will start emerging from the crown this spring.
Sago palms and other cycad species like Dioon and Coontie palms and Cardboard palms are very common landscape plants where I live. We typically don't get to 12F here, some colder outlying areas have been known to get to the high teens but my house rarely sees less that 22F. I have Sagos in my yard that were planted in 1987 so that makes them almost 50 years old. They survived a snap here in 1989 where the temps in this area dropped to 10F (before I moved here) so tours might survive as well

Agree. Trim them as close to the trunk as possible w/o damaging the trunk. From what I've seen, it will take too long for them to naturally detach. Most people don't want to look at the dead leaves for so long.

Gina1960 said:
were planted in 1987 so that makes them almost 50 years old.

More like 36 years old. My son was born in '85 and I knew he wasn't anywhere near 50. I know the years fly by but don't scare me!

LOL I cannot count. I always blow it by +/- 10 years

'87 does seem like 50 yrs ago.

It does to me

Indeed!

Robyn, are you seeing any new leaves at the top/middle of your Sago?

Since there are/were leaves with green at the base, there is a good chance the plant is still alive.
Patience grasshopper.

I wasn't worried that it is still alive, just curious if this years' leaves are starting to grow yet.

Some are on mine, but not on all

Not yet

Here it is, the middle of june... Mine is only now starting to show some green tips...

Normal for the one I have...

Better late than never!