Brown spots from pesticides?

[thez_yo]

I've had mealies on my Sarrs and Cephs.. a couple on a VFT Royal Red. I sprayed those down with the strong Bayer stuff, and I'm neeming everything else. All of a sudden I have spots on my Nepenthes and I'm wondering is it side-spray from the Bayer stuff (I do spray at night so they don't scorch), if it's the neem, or if it's because I've recently started keeping them in saucers of water most of the week because they get arid, desert conditions? Help!

This is a hamata

sibuyanensis x talangensis - those bottom brown leaves is what I'm used to when I'm spraying with neem (they lose their oldest leaves for me)

chaniana

((veitchii x maxima) x veitchii) x campanulata

 

[Exo]

The spots are from applying pesticides in a full sun environment.....I've had it happen to me before...spraying at night rarely helps because the spray is often still wet in the morning. I keep mine in the shade for a few days after to be sure.

 

[Zhilin]

Generally I sprayed pesticides (the Bayer stuff) in one day and sprayed neem oil in the next day. I've never had this problem. But most of my plants grow either under artificial light or partial sun. I tend to agree Exo. Your problem may be the result of full sun condition. The chemical and oil from pesticides and neem oil can remain on the leaf surface for a long time, not just couple of hours.

 

[icemansyr]

I've been afraid to use those types of pesticides on CPs. I've had a few mealies on Neps before and rubbing alchohol and q-tips usually did the trick. Maybe try that in the future if you don't have a major infestation.