How to Start a Concrete Planter and Decor Business From Your Garage
Concrete planters, dishes and coasters have a clean, modern look that sells at craft fairs and online. The materials are inexpensive and the molds are simple, which makes this a friendly maker business to try from a garage. The trade-offs are weight, curing time and some real safety rules around dust.
Choosing Your Mix
TheCraftMap’s 2026 guide for concrete decor vendors describes the common options. Portland cement with fine sand is cheap and strong but heavy and slow to cure. Rapid-set cement lets you demold sooner but gives you less working time. Casting or countertop mixes pour smoother and need less sanding, and GFRC, which uses chopped glass fibers, allows thinner walls. Avoid plaster or gypsum-based products for anything that will hold wet soil, because they are not waterproof.
Molds, Finishes and Plant Safety
Molds can be silicone, rigid plastic, or found objects such as cardboard and PVC. A release agent like mineral oil or paste wax helps pieces come out cleanly. For finishing, you can add pigment, stone chips or stain.
Raw concrete is porous and alkaline, so let each piece cure fully, rinse or soak it before planting, and add a drainage hole. Choose a penetrating, breathable sealer for planters, since a glossy film can trap moisture. Use a sealer rated for food contact only if you plan to sell something that touches food. Avoid claims such as “frost-proof,” and tell buyers to empty pots before a hard freeze, since trapped water can crack them.
Safety First: Silica Dust
Dry cement and sand contain silica. OSHA explains that respirable crystalline silica, found in concrete, brick, stone and mortar, becomes airborne when these materials are cut, ground or drilled, and exposure can cause silicosis, lung cancer, chronic obstructive pulmonary disease and kidney disease. OSHA’s construction standard is aimed at employers, but the lesson applies to a home shop:
- Mix outdoors or in a well-ventilated space, and pour dry powder slowly to limit dust.
- Wear a properly fitted respirator rated for fine dust, not a basic paper mask, when handling dry mix.
- Sand and cut cured pieces wet whenever possible, and clean up with a HEPA-filter vacuum instead of dry sweeping.
- Wet concrete is caustic, so wear gloves and eye protection and rinse splashes right away.
Ask a safety professional if you are unsure about your setup.
Pricing and What Sells
TheCraftMap suggests rough ranges to compare with your own market: about $8–$18 for trinket dishes and coasters, $18–$35 for small planters, $30–$60 for medium planters, and more for large floor pots (as of September 2026). Small matte planters paired with plants sell especially well in spring and early summer, and sets lift the average sale. Count mold wear, sealer, labor and broken pieces in your real costs.
Weight matters at events. Pack pots upright in padded crates, load heavy pieces low, and bring a hand truck. Our guide to selling at a farmers market covers booth setup and fees.
Next Steps
Make a small test batch of five or six pieces, cure them fully, and sell them to friends or at a local fair before buying more molds.
More on Garage Business Blueprint
- How to Start a Pottery and Ceramics Business From Your Garage
- Building and Selling Wooden Planters and Window Boxes From Your Garage
- Selling at a Farmers Market: Booth Fees, Insurance and Setup for Garage Makers
