how to build a raised timber garden bed

how to build a raised timber garden bed

So final summer season’s homegrown tomato crop was extra of a bummer than a bumper, and after a couple of exploratory yard digs it appears much less seemingly that you will hit pay dust. However that does not imply going hungry. By constructing a raised planting mattress, you’ll be able to arrange your seedlings with a loamy dwelling as fecund because the Fertile Crescent.

Surrounded by timbers and full of wealthy soil, the raised mattress allows you to customise your crops’ vitamins and moisture. It additionally brings the backyard to the gardener, permitting you to simply preserve your crops with out stooping.

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And in the event you construct it early you may get a head begin on the planting season as a result of the elevated soil heats up ahead of the bottom. Then not solely will the good-looking construction assist outline your backyard however by no means once more will dangerous dust stand between you and a very good BLT. Learn to construct a raised flower mattress within the steps under.

Step 1

Raised Planting Mattress Overview

Illustration by Gregory Nemec

A raised mattress is nothing greater than a large planter, a field of topsoil with timbers for sides. You may construct it in any sunny, degree spot, or you’ll be able to excavate a barely sloping location to create a degree floor (although this provides to the digging). The field itself may be produced from any measurement lumber—the bigger the items, the less you may want. Cedar or redwood timbers look good and are naturally weather-resistant. Stress-treated wooden is a inexpensive, albeit much less polished, various, and preliminary EPA checks have proven at present’s handled lumber to be a secure materials to be used in vegetable and herb beds.

Earlier than you construct your mattress, you may want to determine how large you need it to be. “The great thing about a raised mattress is its accessibility,” says This Outdated Home panorama contractor Roger Prepare dinner. “It ought to rise a minimum of a foot off the bottom—this offers the plant roots room to develop and provides the gardener’s again a break.” Stick to 4 toes or much less for the width, says Roger, so you’ll be able to attain the center of the plantings from both aspect; in terms of size, the restrict depends upon the scale of your lumber. In the event you use the identical beefy 6×6 timbers proven right here, you should not transcend 10 toes as a result of the timbers will get too heavy. To cowl a bigger space, construct side-by-side beds with room to stroll between them. As a result of the mattress’s first timbers are partially buried, you may want to protect towards rot by laying 2 inches of gravel beneath them. This promotes drainage and likewise gives a stable footing. For the mattress itself, line the underside with extra gravel and drill weep holes by the timbers’ sides.

A lot of the precision and muscle work in constructing the mattress is available in digging the trenches and leveling and squaring up the primary course of timbers. As soon as the primary course is laid correctly and spiked to the earth with rebar, assembling the remainder of the mattress is a matter of piecing the edges collectively like constructing blocks. The entire thing fastens along with timber screws. You then merely add a railing, shovel within the topsoil, and plant your new backyard.

Step 2

Mark the mattress’s define

Picture by Kolin Smith

The timbers that make up the partitions of the mattress will butt towards each other end-to-side on the corners. So to find out how lengthy to make the timbers, subtract 5 ½ inches (the true width of a 6×6) from the size of every aspect. Utilizing a round noticed and handsaw, reduce 12 timbers to size.

Clear the positioning of obstructions and organize 4 timbers in an overview of the deliberate mattress, butting every timber’s finish towards the subsequent timber’s aspect. Utilizing a spade or square-edged shovel, mark the mattress’s define by chopping vertically by the turf each inside and outdoors the loose-laid timbers’ perimeter.

Step 3

Dig trenches for the partitions

Picture by Kolin Smith

Put aside the timbers. Utilizing a spade, take away all of the turf inside the outer traces. Change to a trenching shovel and dig a 6-inch-deep trench within the define of the timbers.

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Fill the ditch with 2 inches of gravel. Use a hoe to unfold the gravel degree.

Tip: Roll up the turf you take away and reuse it to patch your garden. Place the soil you dig out onto a tarp and use it contained in the completed mattress.

Step 4

Set the primary course of timbers

Picture by Kolin Smith

Utilizing a drill/driver fitted with a ½-inch prolonged spade bit, drill holes by the 4 base timbers each 2 toes.

Lay the timbers within the trenches with all of the pilot holes vertical. Organize them so the butt finish of 1 meets the aspect of the subsequent in a clockwise trend.

Utilizing a 4-foot degree and framing sq., degree and sq. the 4 timbers, including or eradicating gravel as vital.

Place the extent atop a scrap of lumber laid diagonally throughout the timbers to verify for degree nook to nook.

Step 5

Fasten the body with rebar

Picture by Kolin Smith

Utilizing a sledgehammer, drive a size of rebar by the pilot holes within the timbers and a minimum of 1 foot into the bottom. Examine the body for degree and sq. as you proceed.

Hammer every rebar flush with the highest floor of the 4 timbers, being cautious to not hit the body so onerous that you just knock it out of degree.

Tip: To chop rebar to size, noticed midway by with a hacksaw, then bend to interrupt.

Step 6

Assemble the mattress’s partitions

Picture by Kolin Smith

Lay the subsequent course of timbers on prime of the bottom course, however organize them counterclockwise in order that they overlap on the corners in the wrong way from the primary course. It will create a lapped sample.

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Utilizing a drill/driver, drive timber screws down by the highest course and into the timber beneath, two at every nook and one within the heart of every aspect.

Step 7

Drill weep holes

Picture by Kolin Smith

Utilizing an prolonged ½-inch spade bit, drill weep holes for drainage by the second course each 4 toes. Drill from the surface in, to maintain the holes wanting neat, and angle the bit upward so water will move out.

Lay the third course of timbers clockwise on prime of the second, lapping the corners once more. Fasten them to the second course with timber screws in the identical method.

Tip: Slip a brief size of ⅜-inch copper pipe into the weep holes to guard the wooden and make clearing clogs simpler.

Step 8

Set up the cap railing

Picture by Kolin Smith

Lay a 2×8 board on prime of 1 wall. Line it up flush with the within edge. Mark the board the place it meets the inside corners. Utilizing a pace sq., prolong this mark at a 45-degree angle projecting outward.

Utilizing a round noticed guided by the sq., reduce the ends at 45-degree miters. Repeat this course of on the opposite three sides of the mattress till you have got a body of 2x8s that sits flush with the inside fringe of the mattress and protrudes 2 inches over the periphery.

Apply building adhesive alongside the highest of the timbers and on the board’s mitered edges. Lay the boards in place. Fasten them to the timbers with 3-inch decking screws each 12 to 16 inches. Drill a horizontal pilot gap by the rails edge and throughout the mitered nook. Drive a 3-inch screw into the joint to forestall it from opening.

Step 9

Fill the mattress

Picture by Kolin Smith

Shovel a 3-inch layer of gravel throughout the underside of the mattress and clean it with the hoe.

Fill the mattress with topsoil, tamping it calmly each 6 inches to scale back settling later.

Fill to inside 2 to three inches of the highest of the mattress. Rake the soil clean and plant.

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