Bronzing during part of the year is typical of arborvitaes.

Even in late April? They looked okay a month ago and seemed to become even more bronze on the tips now. I expected them to become green with spring. Maybe it’s still to early?

lawns on both sides look fertilized ... i doubt these trees will need fert in the future .. unless a soil test shows something is missing and then that would be a soil amendment ...

though most of us had a mild winter.. it is still april ... how cold the nights are.. is usually more important than day temps ...

give them a few weeks... as we all seem to think its normal coloration ....

water when needed.. dig a few small holes and find out.. if they need supplemental watering ... which is kind of rare in april .. up north ...

ken

The Morton Arboretum says this: "The plant's blue-green foliage turns bronze-brown in winter." I've noticed mine are doing the same.

Thank you for the responses. It actually snowed here last week a few times and today it is going to be 72 degrees so temps are still all over the place and nights are in the 30’s. I didn’t consider that maybe they turned brown due to the temps dropping again. And yes the lawn on both sides is fertilized so I will not fertilize them again.

Same as with a lawn a tree planting may either benefit from the use of effectively chosen fertilizer or it may not, depending on the specific circumstances in each situation - there is nothing peculiar to trees that means they categorically don't need to be fertilized.

Nothing whatsoever.

Mine show the same thing at the beginning of the growing season. Should be OK.

Looks a lot like mine that was planted last year. I also have another one that is looking pretty yellowish.

To update, mine are looking good. Maybe it was just "winter burn".

Thanks for updating! Mine are also looking a lot better with this warmer weather. The copper color is about 90% gone now.