What's inside
As an Amazon Associate I earn from qualifying purchases. This post may contain affiliate links at no extra cost to you.
A wheeled plant caddy makes heavy pots easier to move for sweeping, watering, or following the sun. This cedar version measures 16 by 16 inches and is sized for a pot up to about 14 inches across. Four locking swivel casters keep it maneuverable while giving you a way to stop it rolling on a sloped patio.
Contents
Plan the caddy and size it to your pot
Measure the pot at its widest point, including any rim. Make the platform at least 2 inches wider than that measurement so the pot sits fully on the boards. A 14-inch pot fits comfortably on a 16-inch platform; for a 16-inch pot, increase the platform to about 18 inches. Check the pot’s weight when wet, too. A large ceramic pot full of damp soil can be much heavier than it looks.
The design uses five cedar deck boards, each about 3½ inches wide and ¾ inch thick. Three boards form the top; two underneath run crosswise as supports. The gap between top boards lets water drain. Four casters attach to the underside supports, not directly to the thinner top slats.
Cedar is naturally resistant to decay, but it is not waterproof. The caddy will last longer if it can dry between waterings and is stored under cover in winter. If you want the easiest finish-free option, use untreated cedar and expect it to weather gray.
Materials and tools
- Five cedar boards, ¾ by 3½ inches, at least 16 inches long
- Four 2-inch swivel casters, each with a locking brake
- Exterior-rated screws: 1¼-inch screws for the top, and 1-inch screws for the caster plates if needed
- Drill/driver, tape measure, square, pencil, saw, and ⅛-inch drill bit
- Sandpaper or a sanding block, 80- and 120-grit
Choose casters by their load rating, not just their wheel diameter. Add the pot, soil, and plant weight, then divide by four. Because patio surfaces are uneven and loads rarely sit perfectly centered, aim for a combined caster rating at least twice the expected load. A plate-mount locking swivel caster set is convenient, but check that the mounting plate fits on the underside supports.
Soft rubber or polyurethane wheels are quieter and less likely to mark concrete than hard plastic wheels. A cheaper hard-wheel set is adequate for smooth, level concrete and occasional movement. On rough pavers, small wheels can catch in joints; consider larger wheels if your patio has deep gaps.
Choose casters for the surface
| Wheel type | Works well on | Trade-off |
|---|---|---|
| Hard plastic, about 2 inches | Smooth concrete and light pots | Often inexpensive, but can rattle or snag on joints |
| Rubber or polyurethane, about 2 inches | Concrete, tile, and light patio texture | Quieter and gentler on floors; usually costs more |
| Larger wheels, 3 inches or more | Uneven pavers and rough surfaces | Roll more easily over gaps, but raise the pot and may need a larger platform |
Cut and assemble the platform
-
Cut three top slats and two underside supports to 16 inches. Square the ends so the assembled platform does not wobble. If you do not have a saw, many lumberyards can make straight cuts; confirm the pieces are equal before leaving.
-
Sand the cut edges and faces with 80-grit, then smooth with 120-grit. Cedar can splinter, especially at the board ends. Round sharp corners slightly, but do not remove so much material that the boards become noticeably smaller.
-
Lay the three top boards side by side with roughly ¼-inch gaps. Keep the edges parallel and check the overall width; it should be about 11 inches for this layout. Place the two support boards underneath, running across the slats, about 2 inches in from each end.
-
Pre-drill through the top slats into each support with a ⅛-inch bit. Cedar splits easily near its ends, and skipping pilot holes is a common cause of cracked slats. Drive two 1¼-inch exterior screws through each top slat into each support: six screws per support, twelve total. Keep the screw heads flush, not deeply buried.
Use corrosion-resistant exterior screws. Cedar’s natural oils and outdoor moisture can corrode ordinary steel fasteners, leaving dark stains or weakened joints. Stainless-steel exterior screws resist rust well; coated exterior screws are a less expensive choice for a project that will not stay wet constantly.
Mount and test the casters
Turn the platform upside down. Place one caster plate on each support, near its corner, with the wheel able to swivel without hitting the support or top slats. Keep each plate at least ½ inch from the board’s edges. Mark the holes and drill pilot holes; avoid driving screws so close to an edge that the cedar splits.
Use the fasteners supplied with the casters only if they are suitable for wood and short enough not to poke through the top. If the supplied screws are too long, replace them with shorter exterior-rated screws that fully engage the support. Do not use screws shorter than needed to hold the plate firmly. Tighten each plate securely, but stop if the cedar begins to crush.
Set the caddy upright and roll it empty. Check that every wheel turns freely and that the platform does not rock. Then test it with a modest load before placing your heaviest pot on it. If the wheels bind, shift a caster plate inward slightly. If the caddy rocks, check for uneven board ends or debris under a wheel.
Lock all four brakes when the caddy is parked. A caster brake may lock the wheel but still allow the wheel assembly to swivel, so test the caddy on your actual patio. On a slope, even four brakes may not hold a heavy pot securely; park it on level ground instead.
Finish and maintain the cedar
Leave the wood bare if you are comfortable with the cedar turning gray. For added water repellency, apply a penetrating exterior oil or water-repellent finish according to its label, keeping the wheels and brake mechanisms free of finish. A penetrating exterior wood finish can reduce water absorption, but it needs periodic renewal and will not prevent damage from standing water.
Lift the pot occasionally to clear leaves and check for trapped moisture. Tighten loose screws, remove splinters, and replace a caster if its brake stops holding or its wheel develops excessive wobble. The caddy is a useful mover, not a permanent support for a pot that exceeds the casters’ combined load rating.