I have been trying to slowly build up a fruit garden, mostly soft fruit bushes, it is coming along very slowly

However here is were I need some advice..... How do I sell soft fruit during the summer season to supplement income without it being a growing and selling business on its own? I don't want to go down the route of setting up another business, so how do I get it from garden to customer? Also what are the rules and regulations on this? as I have never, ever done this before. I hope this isn't too big of a question to ask and I await your advice on the matter.
Thanks