Cedar Raised Garden Bed with Greenhouse Cover

Overview

This 3×3 Cedar Raised Garden Bed and Greenhouse Cover System brings together two dependable components: a handcrafted Timberlane Gardens cedar bed and a full-size cold frame cover designed to protect plants in unpredictable weather. This combination creates a controlled environment that supports early planting, extends the season, and keeps crops sheltered from frost, wind, and animals.

Most gardeners struggle with cold snaps, inconsistent spring weather, or short growing seasons. This system removes that uncertainty. By pairing a real Select Cedar raised bed with a removable greenhouse cover, you gain a protected microclimate that helps seeds sprout faster, keeps transplants safe, and extends your harvest window without needing a permanent greenhouse.

• Grow earlier in spring and extend your season into fall
• Protect young plants from frost, wind, and animals
• Tool-free Select Cedar bed assembles in minutes
• Greenhouse cover removes quickly for warm-season gardening

Cedar raised bed construction

• Handcrafted from Select Cedar, naturally rot-resistant and safe for vegetable gardening.
• Traditional mortise-and-tenon joinery with oak pegs for secure, tool-free assembly.
• Completely untreated and suitable for organic growing.
• Each cedar board is hand-cut and fit-tested so the panels lock together cleanly without hardware.
• Handcrafted in Homer Glen, Illinois.

Greenhouse cover system

• The full-size cold frame is designed to fit the 3×3 cedar bed footprint.
• Clear PVC cover retains warmth while allowing full sunlight transmission.
• Powder-coated steel frame provides support without unnecessary weight.
• Two zipper doors can be opened for airflow, access, and temperature control.
• Optional tie-down straps are included for added wind resistance.
• Includes a removable waterproof base that can protect surfaces or act as a weed and grass barrier under the bed.
• Suitable for early seed starting, season extension, and fall frost protection.

Simple setup

• Both the cedar bed and the greenhouse assemble without tools.
• The cover can be removed or opened fully during warm months.
• Modular components allow the system to be adjusted as your garden needs change.

Specifications

• Bed footprint: 36 in × 36 in
• Bed depth: 10 in
• Greenhouse dimensions: 36.2 in × 36.2 in × 59.5 in
• Assembly: Tool-free

Warranty

The cedar raised bed includes a 1-year limited parts replacement warranty covering defects in materials and craftsmanship. The warranty does not apply to any component of the greenhouse cover. Replacement covers are available for purchase. All cedar beds are test-assembled before shipping to ensure proper fit.

Soil planning for this raised bed

This section is included to help you plan accurately so you purchase the right amount of soil the first time — no guessing and no wasted bags.

If you are not sure how deep to fill this bed or what kind of mix to use, our Ultimate Raised Bed Soil Guide walks through soil depth, layering, drainage, top-offs, and real-world examples so you can build a mix that actually works in your climate.

On this page, you will also find the interactive soil calculator just below this description. For this kit, the calculator is already set to our 3×3 raised bed (Double 3×3), 10 inches deep preset so you can see the correct soil volume and an estimate of how many standard store-bought bags of soil you will need. If you want to compare other layouts or sizes, you can change the preset in the dropdown or enter your own bed dimensions.

We use sustainably sourced Select Cedar grown in the Pacific Northwest here in the USA, left completely untreated. Cedar is naturally rot-resistant with no chemical coatings, preservatives, or wood treatments added, and is safe for growing herbs, salad greens, vegetables, and other edible plants.

Learn why cedar is a better long-term choice than metal raised beds.

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