Hello everyone, newbie here I have a number of large inherited concrete containers and recently got green fingers for growing foods. I am a fairly inexperienced grower / gardener but read and watch a lot of videos and keen. I already have chillis, yellow and red tomatoes, Cape gooseberry, and sweet peppers underway indoors in a mini greenhouse under T5 which are ready to start hardening off to move outside from April, with a number of other seeds ready to start soon; carrots, lettuces ,chard, etc However, can't quite find answers to some questions and thus thought I should join a forum. So I have these large containers approx 1.5ft x 1.5ft x 3ft. They had two Thuja / conifer trees growing in each of them. I've uprooted the trees but the pots are rootbound with woody roots. How do I best prepare these containers for vegetables / fruit gardening or am I doomed from the start? Do I need to get rid of all this soil? Is the best method hard work? Recommended tools? The containers have drainage holes. I can get new soil and aware I'd need a lot. I already have lots of perlite and clay pebbles for soil aeration. I'm assuming I can apply Sq ft gardening principle, 3 patches per container. I was thinking I'd pack out the bsse of some containers to save on soil needed. So, if you wanted to grow your own veg in these concrete containers rooted up with coniferous soil, what would you do?