>>253079>and that planter looks hella expensiveThe bricks? They were free from a building being torn down many years ago.
Mint is just like any other weed when you don't want it. Just pull it out/transplant it. Where I live ground ivy is 3 times as invasive and you can still keep it at bay fairly easily. I too have mint, several kinds.
>>253090Yeah, PVC tubes as spacers is the way to go. Once the plants get going, no one will notice the pots.
>>253111To equal 1 cinder block, you'd need 4 of those bricks stacked together. I find that the smaller stuff moves around more while the larger stuff tends to stay put. Don't use mortar though, being able to dismantle one side or redo a design is really nice. Having the option of running a rototiller through it is also nice, if you have one. If you take the time to level the foundation for them (unlike what I do) they will stay put a lot better and longer than normal.
If you use mortar, you'll need to install a real foundation to prevent it from cracking. This can happen in both cold, hot, and dry environments so plan ahead. If you don't use mortar, you can buy a few blocks/bricks now, make a smaller raised bed, save money up, and enlarge that same bed later when you can spend more money. If it is mortared together and you enlarge it, you'd wasted some money on the part of the wall you either tear down or lock in on the other side.
I scour the bulletin boards, craigslist, freecycle, and keep my eye out for local building demolition/structure fires. Then I get super cheap or free blocks and bricks.
