| Many people are interested in raised gardens because of the myriad of benefits that they offer. Some of those benefits include more control over soil type and condition, ease of planting using the square foot method, and less weeds.Most importantly, if the native soil is not conducive to plant growth, you can fill raised beds with your own customized blend of soil. Show
If you are thinking about making a DIY raised garden, then you need to follow each step of the process diligently. Filling the raised beds with soil is an important step for planting. It is important to calculate the amount of soil needed in order to avoid waste and save money. Below are the formulas for calculating the right soil volume needed, depending on the size and shape of your raised bed. For your convenience, we have attached a table with the corresponding metrics of our garden beds so you can easily figure out the amount of soil needed. Formulae For Calculating the Volume of Soil Needed For Raised BedsThe soil volume calculation formula differs based on the shape of the raised bed. Before going into the formula, you need to know what units of measure are needed. For the calculation, you need to find the appropriate dimensions of the bed and then convert them into a common unit. For example, if the volume measurement is in feet, then convert the appropriate measurements of the bed into feet first. Formula For Square/Rectangular Soil Volume Of Raised Beds The formula for soil volume in a rectangle bed is very simple, involving only three measurements. You can also refer to the product page for the volume of each configuration in a standard kit. V = L x W x H
1. Measure the length, height and width of the bed. Remember to convert the measurements to the same unit. For example, if your bed is 17″, divide by 12 to get 1.4 ft. 2. Multiply the measurements together. 3. Divide number by 27 to convert it to cubic yards, as bulk soil is often sold by the yard. Formula For Circular Raised Beds To calculate the area of a circular raised bed, you need to know the bed’s radius and height, which you can check on the product page. The radius is half the diameter of the circle. Square the radius, and then multiply by 3.14. Finally, multiply the amount by the height to get the volume. V = r^2 x 3.14 x H Calculating Soil For Geometric Beds The formula below is for a hexagonal raised bed, when the bed is a regular hexagon (meaning the sides are all the same length). V= 3/2 (√3) S2 x H
Soil Depth For Raised Beds The amount of soil required also depends on the variety of plants that you wish to grow. Deep-rooted plants require more soil, while others need shallow soil to cover the roots. If you find all of these calculations cumbersome, you can purchase ready-made raised garden bed kits from trusted sources for planting with ease. The following plants have 12 - 18″ roots
The following plants have 18 - 24″ roots
Below are plants with deeper systems of 24 - 36″ roots
Raised garden beds have an advantage in that you can grow plants in half of the normally required depth, so you can plant almost all the items in the above list in our 17″ and 32″ beds. You can mix and match the vegetables according to your taste and preferences, making sure to space them out accordingly. What is Mulch and Why Do I Need It?Mulch is a layer covering the soil, often made of organic material. It is commonly made of shredded bark, but alternatives can include grass clippings, leaves, woodchips, or straw. Mulch is used to improve the aesthetic appearance of the garden bed, as well as protect the soil by keeping it moist and inhibit the growth of weeds. Organic mulch can be used to improve soil quality and richness. It is important to supplement the soil in your garden bed to make sure that it isn’t depleted of nutrients. Adding organic matter to the soil is essential in order to maintain the health of the soil. You can add chopped leaves to the soil in the fall, and add compost in the springtime. Consider starting a compost pile so you can simultaneously reduce waste as well as the amount of fertilizer needed. The Right Blend Of Soil For A Raised BedTo achieve good drainage, you need to use pre-mixed soil. Vegetables, fruits and herbs require a nutrient rich, lightweight soil mixture that is generally composed of the following ratios:
You can experiment with the ratio to see which blends are best for different crops. Garden soil should not fill the whole bed, as it is too heavy for good drainage. You should add half potting soil to the mix for best results. How to Prevent Weeds You should add material to the bottom of your bed to prevent weed growth. Cardboard can be used as it is a cheap, readily available solution that creates a weed barrier while still being porous enough to maintain good drainage. However, it can degrade quickly. If you want a more permanent solution, you can use landscape fabric or hardware cloth to stop both weeds and pests like gophers and moles.  Soil Required for Vego Garden Raised Beds:VEGO GARDEN 17" TALL 4 IN 1 MODULAR METAL RAISED GARDEN BED KITConfiguration Width (ft) Length (ft) Height (in) Cubic Feet Cubic Yard C3535 3.5 3.5 17 17 0.6 C2050 2 5 17 14 0.5 C2035 2 3.5 17 10 0.4 C2020 2 2 17 6 0.2 VEGO GARDEN 17" TALL 6 IN 1 MODULAR METAL RAISED GARDEN BED KITConfiguration Width (ft) Length (ft) Height (in) Cubic Feet Cubic Yard C3550 3.5 5 17 25 0.9 C2065 2 6.5 17 18 0.7 C3535 3.5 3.5 17 17 0.6 C2050 2 5 17 14 0.5 C2035 2 3.5 17 10 0.4 C2020 2 2 17 6 0.2 VEGO GARDEN 17" TALL 9 IN 1 MODULAR METAL RAISED GARDEN BED KITConfiguration Width (ft) Length (ft) Height (in) Cubic Feet Cubic Yard C3565 3.5 6.5 17 32 1.2 C2080 2 8 17 23 0.8 C5050 5 5 17 35 1.3 C2065 2 6.5 17 18 0.7 C3550 3.5 5 17 25 0.9 C3535 3.5 3.5 17 17 0.6 C2050 2 5 17 14 0.5 C2035 2 3.5 17 10 0.4 C2020 2 2 17 6 0.2 VEGO GARDEN 17" TALL 10 IN 1 MODULAR METAL RAISED GARDEN BED KITConfiguration Width (ft) Length (ft) Height (in) Cubic Feet Cubic Yard C2595 2.5 9.5 17 34 1.2 C4080 4 8 17 45 1.7 C2580 2.5 8 17 28 1.0 C4575 4.5 7.5 17 48 1.8 C2575 2.5 7.5 17 27 1.0 C5565 5.5 6.5 17 51 1.9 C4065 4 6.5 17 37 1.4 C2565 2.5 6.5 17 23 0.9 C6060 6 6 17 51 1.9 C2560 2.5 6 17 21 0.8 VEGO GARDEN 32" EXTRA TALL 4 IN 1 MODULAR RAISED GARDEN BED KITConfiguration Width (ft) Length (ft) Height (in) Cubic Feet Cubic Yard C3535 3.5 3.5 32 32.67 1.21 C2050 2 5 32 26.67 0.99 C2035 2 3.5 32 18.67 0.69 C2020 2 2 32 10.67 0.4 VEGO GARDEN 32" EXTRA TALL 6 IN 1 MODULAR RAISED GARDEN BED KITConfiguration Width (ft) Length (ft) Height (in) Cubic Feet Cubic Yard C3550 3.5 5 32 47 1.7 C2065 2 6.5 32 35 1.3 C3535 3.5 3.5 32 33 1.2 C2050 2 5 32 27 1 C2035 2 3.5 32 19 0.7 C2020 2 2 32 11 0.4 VEGO GARDEN 32" EXTRA TALL 9 IN 1 MODULAR RAISED GARDEN BED KITConfiguration Width (ft) Length (ft) Height (in) Cubic Feet Cubic Yard C3565 3.5 6.5 32 61 2.2 C2080 2 8 32 43 1.6 C5050 5 5 32 67 2.5 C2065 2 6.5 32 35 1.3 C3550 3.5 5 32 47 1.7 C3535 3.5 3.5 32 33 1.2 C2050 2 5 32 27 1.0 C2035 2 3.5 32 19 0.7 C2020 2 2 32 11 0.4 VEGO GARDEN 32" EXTRA TALL 10 IN 1 MODULAR RAISED GARDEN BED KITConfiguration Width (ft) Legnth (ft) Height (in) Cubic Feet Cubic Yard C4080 4 8 32 63 2.3 C2595 2.5 9.5 32 85 3.2 C2580 2.5 8 32 53 2.0 C4575 4.5 7.5 32 90 3.3 C2575 2.5 7.5 32 50 1.9 C5565 5.5 6.5 32 95 3.5 C4065 4 6.5 32 69 2.6 C2565 2.5 6.5 32 43 1.6 C6060 6 6 32 96 3.6 C2560 2.5 6 32 40 1.5 VEGO GARDEN SPECIAL SHAPES MODULAR RAISED GARDEN BEDS KITSConfiguration Width (ft) Length (ft) Height (in) Cubic Feet Cubic Yard L-Shaped Standard 5.5 5.5 17 30 1.1 L-Shaped Large 7 7 17 41 1.5 U-Shaped Standard 5.5 8.5 17 51 1.9 U-Shaped Large 7 8.5 17 62 2.3 U-Shaped Jumbo 7 11.5 17 92 3.4 Cascading Standard 2 3.5 32 70 2.6
Related ArticlesHow To Fill Raised Garden Beds With Soil And Save Money 6 mins read The Difference Between Garden Soil and Raised Bed Soil 6 mins read How Deep Should Raised Garden Beds Be? 5 mins read About Vego At Vego Garden, our goal is to redefine Raised Garden Beds. The company was founded with the goal of launching a modular metal garden bed system with a 20+ year life expectancy, utilizing eco- friendly metal materials instead of cutting down trees. We emphasize innovative design and high quality with our products. The name vego carries the spirit of DIY modular raised beds suitable for growing vegetables. How much soil do you need to fill a raised bed?Answer: The cost to fill a raised bed with bagged fertile soil (planting mix) adds up quickly. The volume of soil you need is 12 feet times 4 feet times 1.5 feet (length times width times depth equals volume), which comes to 72 cubic feet.
How many bags of soil do I need for a 4x8 raised bed?For a 4×8 raised garden bed that is 8 inches high, you will need 21.44 cubic feet of soil or 15 bags of soil. 15 bags of soil is needed if each bag of soil contains 1.5 cubic feet of soil. This figure is for the total soil needed to fill your raised garden bed.
How deep should I fill my raised garden bed?A raised bed does not always require a significant depth for it to be effective. They should have at least 8 inches of soil depth to accommodate the root systems of plants, because the majority of plant roots require 6 – 8 inches of soil for healthy root growth.
How many yards of soil do I need for a 4x8 raised bed?How much soil? For a 4x8–foot raised bed with a 10” height, about 1 cubic yard of soil is needed. For a 4x8-foot raised bed with a 6” height, using Mel's Mix: about 5 cubic feet each of compost, peat moss, and vermiculite is needed.
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