It's probably been open for ages to be fair but I've only just remembered to look 
We missed it last year as we left it too late to go and it got all boggy as Autumn began so they closed it - but it's meant to be very good.
This year there is a Scarecrow trail with treats to win according to the website too.
All the normal stuff will be there too - the animals and the playground and the soft play barn. It's definitely worth a day out.