My recently propagated native lantana is doing fine. Set a bloom this week. But look at what is happening to the leaves. Can anyone name it and recommend a 'treatment'. Leaf miners don't usually leave a dark area in the center of their 'trails'. I looked in the disease area of the forums but didn't see anything in the Leaf Symptom area that looked quite like this. It is seen on both branches of this 1 month old seedling.

I need a closer picture but I suspect you are dealing with leaf blotch miners.

ElPolloDiablo said:I need a closer picture but I suspect you are dealing with leaf blotch miners.

It's blowing so hard I had to hold the leaves/plant still. Do these pics help? I can't get zoomed in any closer than this with my camera:



Couple shots of back of leaf:



No visible bugs anywhere on plant stems, leaf tops or bottoms.

Yeah, definetely leaf miners. The feeding damage is turning brown because it's old, so they have probably already pupated and flown away.

Not really much you can do about it right now: if you want you can remove the affected leaves but it won't change much since the damage's done. The good news is leaf miner damage on lantanas is merely cosmetic and leaf miners seem to be very cyclical pests, meaning you may not see them again for years or you may be invaded by them next year, who knows?

Unfortunately as the name implies leaf miners feed inside the leaf so they are invariably discovered once they have already started feeding, and at that point only systemic insecticides will kill them.

Thank you both for your help. I've never seen the large blotch state of affairs, only the meandering single-line leaf miner trails. Will have to keep a closer watch on these plants.