All the outlining's done, so onto the filling in.
I'm starting with the stems, in the same shade of green, Madeira stranded cotton no. 1410, as used when outlining them. No shading here, just filling in the full stem in the one colour using long and short stitch.
There are ten sets of stems in total, and here's the first five:
And the rest:
It makes quite a difference! Onto the broom flowers next.