Maple identification help

[penumbra]

You are making it sound more like scale.

 

[Joe_B]

You are making it sound more like scale.

Yes possibly. I scraped some off and crushed them with the edge of a knife, they were slightly wet. Do you know of a good insecticide or treatment?

 

[penumbra]

Yes possibly. I scraped some off and crushed them with the edge of a knife, they were slightly wet. Do you know of a good insecticide or treatment?

Funny that no one picked up on that. I guess we are just not used to seeing scale that heavy.
There will be a lot of answers as how to treat it, but I can only tell you what I would do. Clean as much off as you can with swabs or a soft cloth dipped in rubbing alcohol and then treat with a good systemic insecticide. Spray or granules, your choice, but I usually use granules for scale.
Best luck.

 

[SC1989]

Definitely rubrum. I've seen bark scale that looks like that, but the tree doesn't look sickly

 

[penumbra]

Definitely rubrum. I've seen bark scale that looks like that, but the tree doesn't look sickly

It takes an awful lot for an Acer rubrum to look sickly. When I was in the landscape business I probably oversaw the installation of several hundred red maples of various cultivars. I don't believe I ever saw more than a little leaf spot from time to time. I even remember a car ran into one and despite the significant trunk damage, we staked it upright and it thrived.
Still, if you have scale like this it needs to be addressed.

 

[just.wing.it]

Hmm....bark scale? New to me....
Not lichen is it?

 

[NGski86]

Not sure if this is of help at all but I recently went through some identifying myself and have some examples of a Norway maple (left) and what I believe is a Silver maple (right).

 

[Joe_B]

Hi all, thanks again for the help and wanted to share the current fall color. Yellow leaves are starting to fall off, don’t think it’s going to yield any red at this point.

 

[just.wing.it]

I see some red in there.

 

[Cmd5235]

Definitely looks like an acer rubrum with the foliage but that bark...man...I don't know. I like it tho, it's great- reminds me of liquidambar (but as been said before, it's definitely NOT). It looks fairly healthy, if the bark was a disease it would be showing in the foliage by now I would assume

 

[penumbra]

You really need some nights below 42 F to get get reds.
We haven't had it here yet.

 

[Bonsai Turtle]

You really need some nights below 42 F to get get reds.
We haven't had it here yet.

Do all Acer Rubrum go to red below 42F?

I recently acquired three young ones. One is the most beautiful solid red, another is kind of mottled green/yellow/pink and the other one is still green. The red and the mottled one came from the same source (backyard nursery). My wife wants the red one as a landscape tree. I like that one the most but figure I can air layer it later. I wonder if the other two will turn red at any point.

 

[penumbra]

Do all Acer Rubrum go to red below 42F?

I recently acquired three young ones. One is the most beautiful solid red, another is kind of mottled green/yellow/pink and the other one is still green. The red and the mottled one came from the same source (backyard nursery). My wife wants the red one as a landscape tree. I like that one the most but figure I can air layer it later. I wonder if the other two will turn red at any point.

There are no absolutes even in a single zone and certainly from plant to plant. You are dealing with both, different zone and different plants.
Certainly pleasing the wife is paramount and yes it can be air layered.