COR has a huge range and the trees vary allot. So far I am more impressed with
the E. calycina which some say is another type of COR. I have 5 different COR and
2 different E. calycina. In Florida some types are prone to die back ...
I'm wondering if there is any relation to the soil pH and die-back with CotRG. I have one that was growing quite well in a 3 gallon pot so I planted it in the ground because it had gotten 3-ft tall. It grew nicely for one season and then experienced some dieback.
Now it is only a foot tall and growing very slowly despite being mulched, watered and fertilized periodically. It sailed through the recent cold weather here exposed to the open sky with no damage of even leaf burn.
I also have half a dozen small (8 inches tall) seedlings of
E. calycina (in 6-in pots) and they weren't affected by the recent cold either.
Paul M.
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