So i'd like to add another small bed (in ground) for overflow veggies. Soil is meh, clayish and hardpan. I've exhausted my compost and leaf mold in existing beds that I already expanded. Figured I'd till in some hf and perlite to get a start this year and mainly grow beans and get what I get. Have time restrictions so figuring this would be best way to go. Have always been a mix guy, so would this be a good route or waste of time and money. $25/3cu bag. Know nothing about product. Any thoughts would be helpful. Thanks.