If you want a low maintenance garden mulching is the one job you should do. The plants will love you for it, you will need to water less and weed less!
At this time of year there is an abundant resource of fallen leaves so gather them up and make some of your own black gold, ready in about a year.
So get your compost ready, peat free for environmental reasons, and get mulching in the autumn or spring.
More about mulching: https://www.gardenorganic.org.uk/mulches
More about why peat free https://www.dalefootcomposts.co.uk/why-peat-free.aspx