sap on fuchsia

Last year, my fuchsia has lot of sap on its leaves and it dripped all over the balcony floor. Is this normal. I see the sap on the new leaves again this year but it seems growing well.

Thanks.

yee

 

Closeup images showing the leaf undersides may get you a better response.

 

You are so right. I turned the leaves over and mites are all over them.

Thanks.