pick your own fruit

I don't know how to attach a pdf so do this:
type
auto-cueillette wepion (pick your own) into google and you should see a link that is entitled

[PDF]
Nom et coordonnées Adresses Commune Heures d'ouverture ...

and looks like

www.saveurspaysannes.be/.../auto-cueillette%20à%20l.

Now I have never used this document but I guess it is a good place to start Many moons ago I certainly picked raspberries in the book town of Redu.

google seach : pick your own Belgium

first thing that came up:

http://www.mariesgarden.be/en/about-us

In addition to Maries Garden (Overijse) mentioned above, there is also "de ferme framboos" www.fermeframboos.be in Huldenberg.