I have built a raised bed (about 60cm high) and want to fill it so I can start growing stuff. Unfortunately the cost of vege mix/garden mix is quite high - so I'm wanting to add something as a filler.
I have a considerable amount of wood chips which I managed to get for free when the neighbour cut down trees (wood chips has been sitting for a little over a month). I'm seriously considering filling the bottom half to 2 thirds of the bed with this mulch - but I'm very concerned about their absorption of nitrogen - and then covering it with vege mix for the top 1/3rd to half, and growing stuff.
The only thing I've been able to find online - which says its OK - is https://backyardgardengeek.com/bark-or-mulch-in-bottom-of-raised-beds/ - but I'm not convinced
Is it a mistake to do this, and are there common veges that are better/I should steer away from for the first year if I do proceed? (FYI, its spring here. I'm in the equivalent of US hardiness zone 9b I believe)