Plastic flowers and dry moss from The Range, some brown paint, hairspray, important safety tip ( do not steal it from your wife ). Some green scatter and some light gray coarse ballast, although I'm sure some household condiments like semolina would work just as well. Clip off a couple of the stems, pull the flowers off and chuck em, they are way too big. Paint the stalks.
Shove dry moss in between the branches and apply a liberal coating of hairspray. Apply more hairspray and liberally apply scatter, I alternate between colours, this gives it a bit of shading and reduces uniformity.
Apply another liberal coating of hairspray and then the gray ballast.
Drill a hole, and shove it in with a little PVA, 15 minutes and you are done.