Resistance is Fertile sent me a pm last year sometime with regards to reseeding,this is what they sent.
Regarding understorey we sow this mix behind the pigs:
5% common bentgrass
5 % crested dogstail
10% smaller catstail
15% sheeps fescue
20% red fescue
5 % wild white clover
10% late flowering red clover
4 % alsike clover
4% birdsfoot trefoil
10% sainfoin
8% common vetch
4% yellow trefoil
At the same time we sow a mix of
30% mustard
30% kale
40% Stubble radish
and a good splash of
wild garlic
cowslip
lady’s bedstraw
lesser knapweed
ox-eye daisy
meadow buttercup
meadowsweet
ragged robin
ribwort plantain
self heal
yellow rattle
we also stick in jerusalem artichokes and comfrey whenever we have any spare as they seem to keep coming back all the stronger when theyve been ploughed in by the pigs.
This may seem a hassle, but its all cheap seed, the woods look great and are full of insects and birds and most of all it avoids us having to buy in any food for the pigs as it keeps the fodder coming and biodiversity up. As time goes on less seed is required to re-establish.