Quote:
"[Q] What should I feed a hedgehog?
[A] Hedgehogs are insectivores, so the best diet is the bugs and grubs in your garden, which will also help keep the ‘pests’ down. Therefore, the best way to feed hedgehogs would actually be to encourage more insects into your garden. You can do this by leaving some areas a bit wild, planting native plants and shrubs, creating log piles, putting in bug hotels and having fresh water available (ideally a wildlife pond with a ramp for mammals to climb out).
However, to encourage them in to your garden you could offer a ‘top-up’ meal of a good meaty-based diet. We recommend a small dish of any meat flavour dog or cat food, plus a handful of dog or cat biscuits to keep their teeth healthy. Feeding hedgehogs in your garden should only be a supplement to their natural diet, or to help them during the harder Winter months, so it is important to not offer too much of any one type of food.
Hedgehogs are lactose intolerant so milk can make them very ill and should never be offered. Instead, put out a dish of fresh water each night. Hedgehogs are active during the night, so the best time to put out food is just after dusk, when they are starting to search for food. The Autumn and Winter months are the most important for them to find food to put on enough weight before hibernation, so always make sure you put out food at this time of year.
[Q] When do hedgehogs hibernate?
[A] Typically, hedgehogs hibernate from late December / early January until late March time. However, this is very dependent on the weather and the individual hedgehog, as some will hibernate earlier or later and some not at all!"
Source:
https://www.sttiggywinkles.org.uk/hedgehog-fact-sheet/