Hello,

Last year I bought an orange. A while later I noticed brown things on
the leaves. At first I thought they were insects and I expected them
to run away when I touched them, but they did not; they were stuck
there. Then I thought may be they were the eggs of something. They are
brown and only a fraction of an inch in size, and whatever they are
you can scrape them off. The problem is they are all over the stems
and on the leaves too.

Last year I decided to cut back all the affected parts, which left me
with hardly any tree left. This year the plant has grown back but so
too have the things. What are they? I also find the plant is sticky to
the touch.

Thanks for your help.