Home Outdoors Garden
Luke Miller
Everyone's excited to get outside and plant. Build this raised vegetable garden bed kit with a greenhouse cover and you can start earlier than ever!
Our editors and experts handpick every product we feature. We may earn a commission from your purchases.
Time
A few hours
Complexity
Intermediate
Cost
$501-1000
Introduction
Gardeners are anxious to get out in the garden. A raised vegetable garden bed makes that possible earlier in spring — especially when it has its own greenhouse cover. At waist height, this planter box is easy to access, yet thieving rabbits don't have it so easy. And because it comes with a self-watering system, irrigation is simple, too. The best part? You can be up and running in a few hours.
Tools Required
- Rubber mallet or hammer
- Screw gun / drill with #2 Phillips bit or a Phillips screwdriver
- Snips or shears (for Self-Watering System only)
- Tape measure
Materials Required
- Landscape fabric (optional)
Project step-by-step (14)
Step 1
Laying Out the Kit
This elevated planter box from Gardeners Supply Company includes rot-resistant cedar boards plus metal brackets, legs and screws. To simplify assembly, group matching parts together. The kit can be assembled by one person, but it will go together easier with two.
Luke Miller for Family Handyman
Step 2
Two Bottom Options
The standard planter box comes with a solid bottom where cedar boards are dropped in place and covered with landscape fabric. With a self-watering planter box, the boards are replaced with a reservoir system that supplies extra moisture to plants to extend the time between waterings. It is also available at an extra cost with eco-friendly stain in two colors.
Luke Miller for Family HandymanLuke Miller for Family Handyman
Sign Up For Our Newsletter
Complete DIY projects like a pro! Sign up for our newsletter!
Do It Right, Do It Yourself!
Step 3
The Self-Watering System
The bottom of the self-watering planter box is lined by four five-gallon reservoirs. The reservoirs are linked with pliable plastic tubing, allowing you to fill all four from one intake.
Luke Miller for Family Handyman
Step 4
Connecting the Reservoirs
To connect the reservoirs with the plastic tubing, soak each end in hot water for 30 seconds. This makes the ends more pliable and easier to fit around the reservoir outlet.
Luke Miller for Family Handyman
Step 5
How the Reservoir Works
The reservoir top has slotted protrusions, or channels. Once in place, these channels are filled with soil mix that is then brought in contact with water in the reservoir. There is less need for top watering, and therefore less evaporation.
Luke Miller for Family Handyman
Step 6
Make Room For the Intake
Each reservoir has a disk cutout for a reservoir intake, or fill tube. However, because all four reservoirs are connected, only one intake is needed. Simply cut out a disk, preferably one closer to the center of the box, to make it quicker to fill the reservoir.
Luke Miller for Family Handyman
Step 7
Fill the Gaps
Once the reservoirs are installed and cross supports set in place, you may wish to line the gaps with landscape fabric to slow the loss of soil mix over time.
Luke Miller for Family Handyman
Step 8
Adjust the Intake
Once landscape fabric and crossover pieces are in place, set the adjustable fill tube so the opening will be above desired soil level. Then fill with potting mix.
Luke Miller for Family Handyman
Step 9
What Kind of Potting Mix?
This planter box is not for heavy topsoil. Instead, use a lightweight potting mix, preferably one containing a slow-release fertilizer to make maintenance easier.
- Pro Tip: Soilless potting mixes frequently contain a lot of peat moss, which should be pre-moistened before planting because it doesn’t absorb water easily when dry.
Luke Miller for Family Handyman
Step 10
How Much Potting Mix To USe
It takes approximately eight 1-cu.-ft. bags of potting mix to fill the 2- x 8-ft. box to a depth of 10-in. This allows for the production of a range of plants, including tomatoes and peppers.
Luke Miller for Family Handyman
Step 11
Planting
Once filled with potting mix, the bed is ready for planting. Cool-season kale, lettuce, broccoli and cabbage are a natural for early spring planting.
Luke Miller for Family Handyman
Step 12
Covers
The kit is available with two covers, which attach to this frame. The frame can be assembled, without tools, in about 10 minutes.
Luke Miller for Family Handyman
Step 13
Anchor the Frame
The frame is pegged in place. However, strong winds can displace the cover, so it’s best to place the planter box in a protected area near the house or behind the garage.
Luke Miller for Family Handyman
Step 14
The Greenhouse Cover
When in place, the greenhouse cover conserves warmth from the day and allows plants to be started outside earlier in the season. Zippered flaps can be opened on warm spring days and zipped back up when nighttime temperatures drop.
Once danger of frost is past, replace the greenhouse cover with the insect cover to prevent cabbage moths and other insect pests from laying eggs on plants.
Luke Miller for Family Handyman
