How to Plan a Raised Garden Bed
Your New Garden
If you are about to enter the hobby of raised bed gardening but need to know how to plan a raised garden bed to achieve success, the tips on this page will serve you well. Raised bed gardening is very popular for good reason. When this method is used, production per square foot is increased and effort is decreased.
Advantages of Raised Garden Beds
There are a few very good reasons to grow plans in a raised bed garden. These are some of the most compelling.
Avoiding Soil Compaction
A raised bed garden should be built to be no wider than four feet. This allows a gardener to reach the middle of the garden bed from either side, and it means that no stepping on the soil is needed. This makes a very big difference over time, since the soil will remain much lighter, allowing water and nutrients to pass through easily. It also will help a young plant's roots get off to a fast start.
Controlling Garden Soil Amendments
When you garden in a raised bed, the soil mixture is your own creation. This offers total control over the soil. It doesn't really matter if you have clay or sand on your property. Your raised bed will be made up of whatever you put into it. That means the perfect mix can easily be maintained at all times.
An Attractive Garden
You might live in a city where a traditional tilled garden would just not fit in, as this can look a bit messy. With a raised garden, this is not a problem. There is no limit to how attractive you can make this type of garden. A simple garden with cedar plank sides looks neat and clean, but for even greater style, corner posts and finials can be added, or finish trim may be included to really polish the look.
How Much Sun Does a Garden Need?
One primary thing that must be determined when planning a raised garden bed is the location. As a general rule, a vegetable garden will perform best with lots of full sun. At least 8 hours of direct sun is preferred, but don't be discouraged if your property cannot support this. Even a site with 5-6 hours may do fine. Here are some things to consider.
Full Sun in a Garden
If you have a bare spot that gets full sun, this is a great choice. While cool season crops like lettuce might not appreciate it for long, the true summer vegetables will love the extra light.
Can You Grow a Garden in Partial Sun?
Yes, you can! In fact, there are very few vegetables that cannot be grown in a spot that does not get full sun. What may happen, however, is that production could be lower. For example, a tomato planted in full sun is likely to be more productive than a similar plant in partial sun. Don't be discouraged, however, since a little extra pruning of the tomato can get plenty of sun to the fruit and still give you a nice crop. Several other vegetables actually enjoy getting out of the hot afternoon sun, especially cool season crops like peas or lettuce.
Splitting Crops Based on the Sun
If you have room for two raised beds, but one gets way more sun than the other, split up your crops so that the sun lovers get the extra light and the plants that don't really care get some of the shade. Here is a chart to help you decide which vegetables to plant where.
Which Vegetables Prefer Full Sun and Which Don't Mind?
Full Sun Preferred
Partial Sun Will Do
Wood For a Raised Bed Garden
When it comes time to pick the material to use for building your raised garden bed, there are some options that are worth considering. The truth is that nearly any material that holds dirt will do the trick, but it's a very good idea to stay away from things that may leach chemicals into the soil. This is especially true of a vegetable garden, since people eat the crops grown in the soil.
Materials to Avoid
In general, any material that is chemically treated or that has been used for some other purpose should be carefully considered before being used. Pressure treated lumber is one example of wood that one should avoid. Railroad ties are another.
Best Wood for Raised Bed Garden
If a wooden garden is desired, untreated wood is the way to go. Keep in mind that this wood will not last forever, but it will last a very long time. For a long lasting wood that is naturally resistant to rot and can handle contact with the ground better than most, choose untreated redwood or cedar. Both are easy to find, beautiful, and will last and last.
Other Wall Options
For a harder garden wall, retaining wall blocks or even bricks will do. Both will hold up to the weather basically forever, and they can be matched to your existing landscape. If you add a nice top rail, you'll even have a comfortable place to sit. Boulders are another find choice, but it may be a bit of a pain to get them somewhat level to hold the soil properly.
3 Keys to Soil
Use equal parts of these three ingredients in your garden bed:
- Peat Moss
Soil To Use in Raised Garden
Before you fill a raised garden with ordinary soil, read this! The "soil" that you use in this type of garden is as important as any decision there is. In fact, it is precisely the soil mix that allows vegetables, especially root crops, to do so well in a garden bed.
How to Make Good Garden Soil
For starters, it's best to create your own soil. A great mix will be made up of ingredients like peat moss, vermiculite, and compost. If you use equal parts of these ingredients it will accomplish three things. First, the peat moss will hold moisture without compacting, making better use of water. Second, the vermiculite will keep the soil loose so that roots and root crops can grow quickly and easily. Finally, the compost will add nutrients to the soil that garden plants love.
How to Maintain Garden Soil
Once you have this mix working in the garden, an annual routine is a great idea. The soil will settle over time, and roots of plants removed each year will carry a bit more away from the garden. To replenish the area as well as the nutrients, follow this annual routine. Use the same mixture above any time more volume is needed due to settling. If the soil level is fine, just go with the compost, adding some new compost each year to keep the nutrient levels up. Even just a little bit will make a difference.
What Kind of Compost to Use in the Garden
Don' get too concerned about exactly what type of compost you use. Just try to add more than one kind. If you compost scraps from the kitchen, they will do nicely. Check out the local garden center to see what the options are. Some common types of compost that will work well in a garden include composted manure, leaf compost, or mushroom compost. The best bet is to mix them all in and benefit from all at once.
How to Grow Vegetables in a Raised Bed
When a raised bed garden is used instead of an expansive and more traditional tilled garden, the manner in which crops are raised should be considered. To really get the most productive garden possible, follow these tips.
Growing Vegetables Vertically
Remember that it's important to be able to reach the center of any garden bed so that no steps take place in the soil. This keeps the soil from being compacted. However, some plants need some room to grow. For these, grow them up instead of out. Nearly any vine crop can be grown vertically, even if they won't attach on their own. Even tomatoes and squash can be grown up with a bit of care. Some plants like peas or cucumbers will attach with no issue. For others, you may need to use soft ties or weave them through netting or string as they grow. Imagine the difference in even a small garden if the only space you need is for the roots, instead of the normal spread of the plant.
Try Square Foot Gardening
There is a popular method used to space seeds and seedlings known as square foot gardening. Basically this just means that a raised garden bed is divided into 1-square foot sections, and the number of plants in each section is fixed to maximize productivity. This type of garden is easy to operate and looks pretty neat. If you just have no clue how to space plants, give it a try.
Be Mindful of the Sun
Since plants tend to be grown closer together in a garden like this, the sunlight direction is more important. Consider this when planning how to plant vegetables in a raised bed. For example, if most of the sunlight will hit your raised bed in the afternoon, short crops that need sunlight should be on that side of the garden bed with taller plants behind them. Likewise, if there are cool-season crops that hate hot sun, put them in a spot where a taller neighboring plant will give them some shady relief in the afternoon. This makes a huge difference.
Annual Garden Maintenance
Like any garden, some maintenance each year is necessary to keep your garden bed in tip-top shape.
Replenishing Garden Soil
As was discussed earlier, at a minimum some new compost should be added to the garden each year. Vegetables are demanding for best results, and compost is natural and easy to find. When more soil is needed, mix in some more peat moss and vermiculite to keep the ratio to about one-third each.
Clean Up in Fall
Don't let winter come before you clean up the garden. Remove all old crops so that they don't sit in the garden. Some soil diseases are more common in gardens where old plants are left to rot. When a vegetable is done for the season, remove it and keep the soil clean. The only thing that should be left in the garden at the end of the season is a crop that will grow or survive the winter, like garlic. Everything else should go.
Turn the Soil in Spring
Before planting time, turn the soil to mix it up. This is a great time to amend the soil with some extra compost. Most people won't believe how light this soil mix is and how easy it is to turn the soil in a raised bed. It is nothing like the traditional tilled garden. The job will be done in just minutes.
Recap of the Plan
So here's the plan.
- Find a spot with enough light for the crops you want to grow.
- Pick a safe material that will look good in your landscape.
- Make a soil mix well-suited for a raised bed to fill it in.
- Go vertical!
- Keep the garden clean and amend the soil each year.
If you follow these tips, your new raised bed garden will be a big hit. Enjoy!
Free DIY Raised Bed Garden Plan
Are you thinking about building your own garden from scratch. This plan may help, and includes pictures to make the job easy.