Large school allotment raised beds
Hi guys. Can someone tell me what I should dig into the beds to enrich the soil? Can I put horse manure on and does it need to be rotted down? last year, all I have been doing is planting in using multi purpose compost, but this year I'd like to give it a bit of umph!
Also, what veg should I avoid planting in the same spot as last year?
Thanks in advance!