Build a Raised Bed Vegetable Garden

Grow Container Organic Vegetables During the Economic Downturn

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The Improved Meyer Lemon tree for a container citrus crop - Kelly Smith
The Improved Meyer Lemon tree for a container citrus crop - Kelly Smith
Create a user-friendly organic victory garden and save money at the grocery store. Raised bed vegetable gardens are great for small areas and are easy to maintain.

Why take the leap into vegetable gardening this year? Several things. First, with the tough economic times, it's important to cut corners on high food prices whenever possible while still keeping high nutritional standards.

Try to grow expensive food items that you enjoy to make the best use of the space. Why not plant asparagus crowns? An asparagus garden will produce faithfully for 15 years!

Secondly, organic vegetables are increasing in popularity. The jury is still out as to whether the nutritional value is any higher, but one thing is certain; pesticides won't do the body any good. This is an opportunity to ensure first hand that organic farming principles are embraced, one household at a time.

Even Michelle Obama, the first lady, is getting in on the action with her White House kitchen garden located on the South Lawn.

But Why Raised Bed Gardening?

First, it doesn't take up much space. Raised beds are generally narrow enough to be worked on both sides. They can be configured according to available space. Secondly, maintenance is minimal. Since the gardening area is effectively separated from the surrounding yard, weeds are less of a problem.

Finally, since by definition the garden bed is raised, it's easier for those with physical disabilities to take care of. The actual height is completely up to the urban or suburban farmer.

Garden Bed Container Materials

  • The bed must be built so as to hold the soil in. The range of materials that can be used is wide indeed. Cedar boards are a good choice since they hold up well to the elements. Cedar also is reputed to be an insect repellent.
  • Concrete blocks are popular. They're affordable, durable, and heavy enough so that they don't need to be secured down, making for an easy vegetable garden to construct. Downside? Concrete will raise the Ph of the soil over time and will need soil monitoring and adjustment periodically.
  • Pine boards may be used. They are inexpensive and non-toxic, but will have to be replaced every two to three growing seasons.
  • Any Internet search will find sites that suggest that landscape timbers may be used. The chemicals pressured into this type of lumber used to be highly toxic. Supposedly, the newer chemicals are non-toxic. But the bottom line is, why take a chance when there are so many other safer alternatives available?
  • Old tires? Yes, a quick Google will find a few of these advocates, but it's best to err on the side of caution and avoid them for the same reasons as pressure treated wood.

Designing the Raised Bed

This really depends on the real estate available. It will need to be placed in a spot where the vegetable plants get enough light for the crops being grown. Then the configuration of the garden should be considered.

One option is a straight run, long and narrow. Since it will be worked from both sides, anywhere from 20” to 3' wide is optimal.

Another option is a single or multiple square beds, which works well in an open area. This will allow the grower to walk between the individual beds while working them.

Construct the Raised Bed Garden

This is fairly straightforward. For wooden boxes, assemble them in place and stake the sides to strengthen against the pressure of the soil.

If using concrete blocks, simply place them in position. In areas with gopher problems, it's beneficial to add wire mesh at the ground level.

Next line the bottom with 2 to 10 layers of newspaper. This will discourage any weeds from trying to germinate from below. Next fill within two inches of the top with the appropriate garden soil and amendments. The soil and soil amendments used is dependent upon location, crop type, weather, and many other factors.

Finally, use a quality, organic mulch on top to hold moisture in the soil. Raised beds tend to dry out faster than in-ground gardens.

Another Container Gardening Idea

Some fruit trees can be container grown. In fact, the Improved Meyer Lemon is recommended as a container plant, which makes it suitable for patios, balconies, or even indoors in front of a window. See the photo of the one I planted last year in a terracotta pot (it's larger this year).

Kelly Smith, Dad, Husband, Freelance Writer, Kelly Smith

Kelly Smith - Kelly has over 30 years experience as a journeyman carpenter and 20 as a freelance writer and photographer.

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24 Comments

Comments

Jan 16, 2009 4:01 AM
Guest :
Kelly,

Great article. I do not have the time to maintain an allotment, my garden is surrounded by flower beds, which my aging parents do not want to disappear so I am trying to find a good solution. A raised vegetable garden, or containers are viable options. What would you suggest as good vegetables for either a raised bed or containers.

Lisa
http://lisa-recommends.com
Jan 19, 2009 6:38 AM
Kelly Smith :
Hi Lisa, You can grow anything that would work otherwise in your climate. You have the added benefit of being able to control the soil make-up and drainage.

I'm going for corn, peas, tomatoes, and some herbs. Randy Lemon made a good point on his radio show this weekend; he said to focus on veggies that you really like but are expensive in the grocery store.
Jan 28, 2009 4:41 PM
Guest :
Kelly,
The ideal area in my yard to build a raised vegetable garden would be in an area that used to be covered in poison ivy. My husband and I think we cleared it all out but I'm afraid it may come back and find it's ugly way in my vegetable garden. Will the poison affect my vegetables in anyway?

Trisha
Jan 30, 2009 9:36 AM
Kelly Smith :
Trisha,
I suppose I'm fortunate not to have any experience with poison ivy. But it's reasonable to assume that the substance that gets on the body and creates so much misery would do the same thing to your insides if you ingested it.

Also, any chemicals used to get rid of the ivy are likely still in the soil. Your veggie plants would take them up along with the good nutrients.

But you do have options with a raised bed. In the photo above you can see that mine is directly on the soil. But you can easily build an elevated one which means your bed and veggies have no contact with the ground.

Why not build one or more containers and support them with cinder blocks? You could ensure good drainage with mesh or pea gravel. Interestingly, when I was doing my research for this project, I learned that many people with bad backs use this method to make the garden easy to work. Let us know how it comes out.
Feb 24, 2009 6:25 AM
Guest :
Kelly,
What is used for the bottom of a raised garden bed on posts? I want to build mine about 3 ft. above ground, but can't seem to find what type of material to use for the bottom. Any suggestions?
Thanks.
Rae
Feb 24, 2009 10:32 AM
Kelly Smith :
Hi Rae, this is the way I would engineer it. Of course, I would build the structure as a rectangular box. Some wood slats or angle iron would span the bottom, across the short side, with perhaps a post support in the center for weight support if needed. Angle iron might be strong enough to do away with extra supports.

The slats in turn would support a layer of galvanized steel mesh. Then a one to 2 inch layer of gravel (large enough not to go through the mesh) goes on the mesh.

Finally, your soil goes on top of the gravel which prevents it from sifting out. Sounds like a good Saturday project.
Feb 25, 2009 6:36 AM
Chris Eirschele :
For above ground containers I would recommend cedar wood, not pretreated wood or old railroad ties as some gardeners use to build them with.

Drill well-spaced holes in the base, I would not leave openings between the boards. In addition, drill holes on all sides approximately 2 inches up from the base. These can be set on cement pavers or placed on frames Kelly Smith has described.

Check out ideas at public gardens that have enabling gardens such as Chicago's Botanic Garden. Ideas used in making roof top gardens apply principles of raised bed building, too.

Vertical Gardening is another technique to grow plants off the ground.


Mar 11, 2009 9:08 PM
Guest :
Kelly,
I want to start an asparagus bed, in a raised bed three railroad ties high. Do I line the bottom of the bed with plastic before putting the organic matter in? Second question: Should I put sand in the bottom of the bed to insure well drained soil
Mar 13, 2009 5:05 AM
Kelly Smith :
Asparagus question: I wouldn't use railroad ties in any garden. In most cases, they have been treated with a high level of creosote. It makes them impervious to the weather, but it's also a very strong carcinogen which can leach into the soil and be uptaken by the roots.

No plastic liner is needed, it would interfere with drainage.

Asparagus is a sand-loving plant so go for it!
Mar 26, 2009 4:11 PM
Guest :
Hi Kelly!
I just found an old twin size bed and thought about making a salad box out of it. It seems to have maybe a varnish on it. Would it be okay to just sand it down really good before I fill it with my mix?
Thanks,
Melissa
Mar 29, 2009 3:08 PM
Kelly Smith :
Hi Melissa,
Not knowing what the finish is, I would err on the side of caution and take it down to bare wood.
May 4, 2009 4:14 PM
Guest :
Kelly: I wish i would have read your article 2 days ago. I just built 4 raised beds (10 feet by 4 feet) with AC2 treated wood for a vegetable garden. I've already staked them and I was planning to fill them with organic compost/soil, etc... next week. It didn't even occur to me to use untreated wood. Given where I'm at, would it be better to line the wood with plastic or is the AC2 treatment safe. Any thoughts?
Jul 6, 2009 10:27 AM
Guest :
HI Kelly:
Can you tell me if it would be safe to use corrugated steel roofing material for a raised bed?
Thanks, Karla
Jul 8, 2009 7:22 AM
Kelly Smith :
Hi Karla, I'm really not sure that I would use it. I haven't heard anything specific about it, but just to be safe...
Nov 30, 2009 1:07 PM
Guest :
Hi,
My mother wants to construct a raised vegetable garden on her concrete patio. Can she do this? I noticed that most of the boxes are put directly on dirt, but she has no yard, just her patio. How should she construct a drainage system?
Thank you!
Colette
Jan 23, 2010 6:12 PM
Guest :
the article was informative.
Feb 15, 2010 11:39 AM
Guest :
Need to remind readers to secure quarter inch hardware cloth (wire mesh) at the bottom of any raised beds. This is a good way to prevent gophers from raiding the garden.
Feb 16, 2010 5:09 AM
Kelly Smith :
Good point! I didn't think of that since we don't have gopher problems where I live. Thanks for the tip!
Mar 5, 2010 7:41 AM
Guest :
we have a major gopher problem in our hillside neighborhood which is one reason for wanting to build a raised garden. we wanted to line the bottom with a liner to stop the gophers from eating the veggies. if we have drainage holes in the liner is this an ok option?

any other ideas?
Mar 12, 2010 5:57 PM
Guest :
Hi,
I built a raised bed on dirt, about 2 ft high. I built it on dirt, and the soil in my backyard is clay like. Do I need to put gravel or sand at the bottom? Or can I just fill it with good veg planting soil and not worry about additional drainage?
Mar 13, 2010 2:36 PM
Guest :
What about the newspaper. The color pictures were poisonious in the past. Can you put them in your garden without worring?
Mar 28, 2010 4:49 AM
Guest :
we have access to metal / steel used in family business. my husband is considering welding the metal to the proper height and various widths for raised beds. anywhere to find information on metal / steel used for raised beds? Thanks :)
May 10, 2010 3:35 PM
Guest :
You can also line the bottom of these or any other planting projects with PermaTil rocks(a.k.a Vole Control). It is small shale rock which the voles cannot tolerate. Has worked for me for years. Not sure how resistant Moles are to this but just wanted to share.
Jeff
Aug 25, 2010 2:58 PM
john simmis :
Building with containers is worth taking a look at if you are contemplating a new home.

Good resource is the <a href="http://www.ResidentialShippingContainerPrimer.com">Resid ential Shipping Container Primer</a> website. A DO IT YOURSELF (DIY) REFERENCE AND FOR CONVERTING RECYCLED INTERMODAL CARGO SHIPPING CONTAINERS INTO BUILDINGS AND ARCHITECTURE.

Lots of example buildings, details, facts, and links to other articles. They have something new that you can setup your own project wiki to get help with your project if you are considering a design build project.
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