What's inside
As an Amazon Associate I earn from qualifying purchases. This post may contain affiliate links at no extra cost to you.
Cedar is a forgiving choice for beginner garden projects. It is naturally resistant to rot, fairly light, and easy to cut with ordinary tools. The trade-off is price: cedar usually costs more than treated pine, and its soft surface dents easily. For a first project, choose a design with straight cuts, exposed fasteners, and no complicated joinery. A planter box, raised bed, compost bin, or simple trellis will teach useful skills without requiring a shop full of equipment.
As an Amazon Associate we earn from qualifying purchases at no extra cost to you.
Contents
Choosing Cedar for Garden Projects
Look for rough or surfaced cedar boards marked 2×6, 2×8, or 2×10. Actual dimensions are smaller than the name: a 2×8 is typically about 1 1/2 inches thick by 7 1/4 inches wide. For raised beds and planters, 1-inch-thick boards are adequate for short runs, but 2-inch material resists bowing better on beds longer than 6 feet.
Western red cedar is light and easy to work, but it is softer and more expensive in many regions. Eastern red cedar can be durable and attractive, though its boards may be narrower, knotty, or less consistent. Choose straight boards with no large loose knots. A small knot is harmless; a knot near the end of a board can split when you drive a screw.
Use stainless steel exterior wood screws or high-quality coated exterior screws. Cedar’s oils can corrode ordinary steel fasteners, leaving black stains and weak joints. Stainless screws cost more, but replacing a rusted joint after one winter is harder than paying for the right fastener at the start.
Best Beginner Cedar Projects
| Project | Typical size | Difficulty | Best use |
|---|---|---|---|
| Raised garden bed | 4 by 8 feet, 11 to 18 inches tall | Easy | Vegetables and herbs |
| Window or patio planter | 24 to 36 inches long | Easy | Small spaces |
| Compost bin | 3 by 3 by 3 feet | Easy to moderate | Yard waste and kitchen scraps |
| Obelisk trellis | 5 to 7 feet tall | Moderate | Climbing plants |
Cedar Raised Bed Build
A raised bed is the best first cedar project because the parts are large, the cuts are mostly square, and small cosmetic errors do not matter. For a 4-by-8-foot bed, cut four 8-foot boards and four 4-foot boards from 2×8 cedar. Stack two boards high for an interior height of about 14 1/2 inches. Join the corners with 3-inch exterior screws, using three screws per corner and drilling pilot holes first.
Set the bed on level ground. Remove grass beneath it or lay overlapping cardboard, then fill with soil. Do not build directly on a steep slope; the boards will be under uneven pressure and may bow outward. If the bed is longer than 8 feet, add a center brace or divide it into shorter sections. Soil is heavy, and a long unbraced wall can push screws sideways or split at the corners.
For a 4-by-8-foot bed filled 14 inches deep, plan on roughly 37 cubic feet of soil, or about 1.4 cubic yards. Buying soil by the bag is convenient but expensive at that volume. Bulk delivery is usually cheaper if your supplier can deliver close to the garden.
Cedar Planter Box
A planter box is a good spring or early-summer project. A simple 24-inch-long box can use two side boards, two end boards, and a bottom made from spaced slats. Assemble the sides with 1 1/4-inch screws, then install the bottom 1/2 inch above the ground using small cleats. The gap prevents the base from sitting in water.
Drainage is the most common failure point. Do not rely on a few tiny holes in the center. Leave 1/4-inch gaps between bottom slats, or drill several 3/8-inch holes across the base. Cover the inside with landscape fabric only if you need to retain soil; solid plastic can trap water unless it has generous drainage holes.
Use cedar for the structure, but do not assume it will last forever. Constantly wet soil eventually rots even durable wood. Set the planter on feet, bricks, or a gravel strip so air can reach the bottom. A planter box with drainage feet is useful where patios stay damp, though simple pavers are the cheaper option.
Cedar Compost Bin
Build a three-sided compost bin from cedar fence boards or 1×6 boards, with a removable front held by cleats. A 3-foot cube is large enough to hold useful heat but still reachable with a garden fork. Leave 1-inch gaps between boards for airflow. Without air, the pile becomes wet, smelly, and slow to break down.
Fence boards are often the cheapest cedar option and are fine for compost. They may be rough, narrow, and slightly bowed, so sort them before cutting. Avoid boards treated with unknown chemicals, especially when you plan to use the finished compost around food crops. A hinged lid is convenient but optional; the cheaper open-top version works in most gardens.
Cedar Trellis or Obelisk
A basic trellis can be made from four 1×2 rails and several thinner slats screwed into a rectangular frame. Keep openings between 6 and 10 inches for beans, peas, and cucumbers. For tomatoes, use stronger uprights because a mature plant can pull a light frame forward.
An obelisk looks more refined but needs accurate angled cuts. Cut four legs to 6 feet, taper them toward the top, and connect them with horizontal braces. Assemble it on a flat surface and check that the base is square before adding upper braces. If the legs rock, do not force the screws tight; correct the layout first or the structure will twist in the garden.
Tools and Seasonal Build Plan
For these projects, start with a tape measure, combination square, pencil, drill, countersink bit, and circular saw. A cordless circular saw is convenient, but a corded saw is usually cheaper and does not run out of power during repeated cuts. Add waterproof exterior wood glue only for protected joints; glue is not a substitute for screws in outdoor structural connections.
Build raised beds and planters in late winter or early spring before planting. Make compost bins in any season when the ground is workable. Trellises are easiest to build before vines need support, but assembling one in autumn gives you time to improve the design for next year. Sand only sharp edges and splinters; smoothing every cedar surface adds work without making an outdoor garden project last longer.