How to Clean Concrete Planters
- 1). Locate a spot in your yard or garden that can tolerate a temporary flood of water.
- 2). Attach the high-powered sprayer attachment to the end of your garden hose.
- 3). Tip the empty concrete planter on its side, so the reservoir doesn't collect water.
- 4). Spray the planter all over with the organic surface cleaner. You can use any cleaner labeled as "green," which means the cleaner is biodegradable or environmentally safe.
- 5). Set the spray nozzle to the highest spray pressure, and thoroughly spray the cleaner away from the concrete planter.
- 6). Tip the planter back to the upright position, and let it dry in the sun.
