indoor lavender, problem

hello
i have this lavender for few months, when it came it was already in bad condition (i suppose someone just let it dry). today i spotted a net on it. is it a "normal" spider net or some special kind of pest? in any case what can i do about that?

 

Mites.

 

is there anything i can do? can it spread to other nearby plants? was there any specific reason for them to come (water, sun...)?

 

First lavender is an outdoor plant so it was very stressed. If you use anything toxic enough
to kill the mites it will render the plant unfit for any other use. You could try planting in the
ground outside and spraying it with water daily to dislodge the mites, but you will likely rot
the roots with that much water.

 

thanks
i had to throw the plant :(
now i'm anxious about the rest of plants...