Can you build a raise vegetable garden on concrete?
1ve grown planters copious times , first you can use 4x4 treated lumber measer how big you want and build but with wood put a liner inside , or if crafty and good beside bricks and mason always look great good luck copious sites on line for desings probably, but pots would be easier.
Yes you can. Just build your box deep enough, make the addition of the soil and plants or seeds. Don't forget that plants in containers entail to be watered more often because they don't get moisture from the meadow. Flowers can grow this way too. I have greatly of container plants on my patio and deck, some are veggies. I love my little garden! I used 4x4 timbers double high and bursting with top soil many years ago. Use treated timbers and solitary plant flowers the first year. After that you can put in your vegies. I didn't drill drain holes and haven't had any problems. When I over hose down or we get a lot of rainfall the access just runs out under the timbers.
Answers: sure you can but the most important thing is to use at 12 inch 2 by's and drill 1 inch holes every 12 inches apart adjectives the way around the bottom..right on the bottom on all 4 sides...Drainage would be your foremost enemy on concrete. just drain it powerfully...
just use pots