I'm new to this kinda stuff.. does anyone know how long pellon bond (for applique) lasts with washing? should i use just the bond or hand stitch onto fabrics also?

You are from Australia. In Australia we use Vlisofix or Heat and Bond for applique.
Iron on Pellon is used for the wadding in patchwork, such as wall hangings and table runners,place mats, etc, anything that does not need the heavier type of wadding.
And yes, you definitely have to stitch it. It will come of in the wash.

I do both. Bond then stitch. Maybe I am overdoing it.

You are all correct. My daughter has used this to hem her pants, and it does wash out. H&*

I made a tablecloth long time ago, and only use the fusible pellon, now every time i wash it I have to use pieces of pellon to "glue" some sections. I think that you are better off if you spend some time stitch it too.

I also like to stitch the applique, I have tried just ironing it on and leaving it but after awhile it just washes off.

I also like to stitch the applique, I have tried just ironing it on and leaving it but after awhile it just washes off.

Always either hand or machine stitch your applique. If you want to be a bit adventurous you could use a decorative stitch you have on your machine, but it must be a closed stitch or blanket stitch, and make sure you overlap the raw edge of the applique.