How much do I need to spend? Buying the right garden tools is all about matching your budget with your needs. If you only have a small lawn to tidy, trim and edge, then there’s no need to spend more than £50 on a lightweight trimmer, and no point in using something heavy that will be more work to move around. If you’ve got a larger plot or areas of thick, fast-growing grass in hard to mow spots, then it’s really helpful to have a trimmer with a bit more welly – or spend the extra on a cordless trimmer.