Tomato leaves black edges
On one of my tomato plants [maybe 2], the edges of the leaves are turning a dark brown or black and shriveling up [of course]. To clarify, not all of the leaves but several of them are showing this problem. There is damage to the leaves only - there is no damage to the stem.
Also in case this is important - I ran out of places to plant in the ground this year so these are in "really" big pots. Only the tomato plants in the pots are showing this problem. The ones planted in the ground look fine and healthy.
Any idea whats wrong?
Please find a attached.
Thanks in advance,