Leaf discolouration

2 out of 10 plants have a minor amount of this type of leaf issue, not water problem, any ideas, don’t want it to get worse

I think you should look closely under the leaves for pests. Kind of what this looks like to me, but I don’t do a lot of outdoor.

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Yeah. Pests, or maybe heat from the bricks? I assume the bricks are facing the sun all day.

Heat from the bricks are possible, but I see some of the brown away from the wall.

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Only afternoon sun at this spot, have noticed some others also have it away from wall!, no pests around 20200122_leafs|500x500

Looks to be in flower. Could be phosphorus deficiency.

All are in flower, will add some “P”