a "burn" is a deficiency .
Doesn't look like magnesium to me. I'd suspect pH or roots that are trying to breathe, or both. cn
yea this just started following like 3 rain days in one week. The other plants right next to it don't show the same problem (just those damned reddening petioles)
Bad part here is the surrounding soil is somewhat clayish so drainage may be an issue. (the 5 gallon sized hole it's in was prepared with a better mixture of course)
Any course of action you recommend?
Just to clarify, it's in it's own hole.
Sounds like a hermie.
Seriously, use a long probe to punch some air holes. Roots need to breathe, and rained-down clay soil can have a smothering action. cn