My recent lemon tree from Aldi is not only covered in lemons at various
stages of development but is also flowering.

It is indoors so not exposed to insects (I hope).

In some places it is listed as self-fertile (i.e. can set fruit from its own
pollen) and in others (at least for the Meyer lemon) it is listed as
self-fertilising (i.e. a flower, if not fertilised by an insect, will set
fruit from the pollen produced by the flower without any outsidi
intervention).

Does anyone know which of these is correct?

The first flower to open looks suspiciously close to fertilising itself but
I would like to know if a quick wizz with a camel hair brush is required.

Cheers

Dave R