First, the pH of the soil needs to be between 6.2 and 7.o. Let's make it 0.6 yd. Combining these measurements with a little preparation will ensure that you are ready for your next outdoor landscaping project. Mow grass as short as possible, without stressing it to the point of damage. I can buy 5 cubic yards for $100, which weighs 5000 pounds. Topsoil similar to the existing soil structure is acceptable and will help smooth out the ground, but doesn’t contain much organic material. Do you prefer to manually work out how much grass seed you need? Multipy the 1500 square feet X the 2 inches....resulting in a figure of 3000. Learn this technique in five easy steps. Sod and soil calculator to help you determine the amount you may require for your residential or commercial grass project in British Columbia or Alberta. Once you know the volume in cubic metres you can work out how many bulk bags are needed by dividing by the volume in a bag. It does this by using the formulae given below: The total area of the garden bed and volume of the required topsoil is calculated using the formulae: You can calculate the total amount of the topsoil required for your lawn if you know the density of the topsoil using the formulae: Note that standard topsoil has a density of 100 lb/ft³. It’s also important to know how much seed you need, and that’s why Lowe’s has a Grass Seed Calculator to make sure every inch of your yard is covered and to save you time and money. For a lawn, you only need about six inches of topsoil. For normal utility lawns, a double screened ¼” topsoil will do. For the second example imagine I want to cover a circular garden bed, diameter 8 feet, with a custom topsoil aggregate. It is widely available to buy in bags or in bulk from specialist suppliers, garden centres and DIY superstores. This can be easily calculated from the weight/volume of a single bag of the topsoil you will purchase using the formulae: $$Number\,of\,bags\,required = {Weight\,of\,topsoil\,required \over Weight\,of\,a\,single\,bag}$$, $$Number\,of\,bags\,required = {Volume\,of\,topsoil\,required \over Volume\,of\,a\,single\,bag}$$. Calculate both the volume and the cost of the topsoil needed. The recommended depth of topsoil for creating lawns from turf or seed is 100 to 150mm. What if you want to work out how many bags of topsoil your landscaping project will require? This is a good way of keeping your lawn nice and thick. I want to ensure equal coverage to a depth of 4 inches. Grass plants need at least 15cm of good quality, well prepared topsoil to root into. Rolawn topsoil is sold in bulk bags, however if you need to calculate the tonnage required when buying loose topsoil, you’ll need to check the bulk density of the product, as this will vary depending on the type of topsoil and its make up. See below for two fully worked examples using different initial criteria. I enter these measurements into the calculator which would do the following operations in order to work out the total area of the garden bed: $$Bed\,area = Length \times Width = 5\,ft \times 4\,ft = 20\,ft^2$$, $$Volume = Area \times Depth = 20\,ft^2 \times 3\,in = 5\,ft^3$$. Topsoil Calculator Use our free topsoil calculator to quickly identify how many tonnes or 25L/kg bags you need for a project. Spread grass seed if overseeding. Add the 2 inches of top soil then reseed the area that you added the top soil. The depth of topsoil for growing vegetables will vary depending on what you plan to grow. A nice, thick lawn requires healthy soil as its base, but this can be difficult to do once grass is established. What if I want to work with different units. Domestic grass seed needs an optimum 6 inches of topsoil. 150 to 200mm of soil is usually sufficient for most planting. Spreading Topsoil Not only is it able to work out the volume of topsoil you will need, but also the total weight and cost of the project. If you chose this you need to use a mechanical spreader. $$Number\,of\,bags\,required = {Weight\,of\,topsoil\,required \over Weight\,of\,a\,single\,bag} = {0.275\,t \over 0.02\,t} = 13.75 \rightarrow 14\,bags$$. To create the blend, use the following quantities: 9 cubic feet of topsoil (9 20-quart bags) 4.5 cubic feet of compost (4.5 20-quart bags) 1.5 cubic feet of … Divide that figure by 1000 and multipy by 3. Then, the topsoil calculator works out the total weight: $$Weight = Volume \times Density = 16.76\,ft^3 \times 1000\,lb/yd^3 = 0.31\,t$$, $$Cost = Price\,per\,unit\,Mass \times Mass = 20\,$/yd^3 \times 0.31\,t = $12.41$$. When you start any outdoor landscaping project, it’s important that you have a rough idea of how much material you are going to need. You need at least 4 to 6 inches of nutrient-rich topsoil to grow good grass. cost per cubic foot) then the calculator can work out the total cost of the required soil for topdressing your lawn: $$Cost = Price\,per\,unit\,mass \times Weight$$, $$Cost = Price\,per\,unit\,volume \times Volume$$. It’s not necessary to buy new topsoil or any special form of soil to cover your newly planted grass seed. If I choose to not remove the gravel, how many inches of soil will I need to place over the gravel to sustain grass from seed? STEP 3: Spray the area with water once clean of debris. and the total volume of the topsoil required: $$Volume = Area \times Depth = 50.27\,ft^2 \times 4\,in = 16.76\,ft^3$$. I now enter these measurements into the topsoil calculator to work out the garden bed area: $$Area = \pi × \biggl( {Diameter \over 2} \biggr) ^2 = \pi × \biggl( {8\,ft \over 2} \biggr) ^2 = 50.27\,ft^2$$. The first thing you need to do is measure the area you need to cover and the depth of soil you need (measure in metres and centimetres if you can), then just enter the measurements in our topsoil calculator below and press calculate! The recommended depth of imported topsoil required will depend on the site, the existing soil and what you are going to use the area for. Simply fill in the width, length and depth of the area you need to fill with … I want to ensure equal topsoil coverage to a depth of 3 inches with standard topsoil (110 lb/ft³). Let’s take the first example in which we required 0.275 US short tons of topsoil. How much soil do I need? Turfonline’s turf expert explains more in this article. Divide the cubic metres required by 0.67 to give you the tonnage. ... First, we need to divide the grass … If the soil structure is poor, incorporating a soil improver may be the best option. In simple terms you will be working out width, x length x height Make sure all of the measurements you used were in metres. The cost of the topsoil is $30 per US short ton. Adding soil over grass is also not the cheapest option in lawn repair. In the fall of 2017, I spread two-(2) cubic yards – first Erth Food and second bulk topsoil; the Erth Food really produces a “Chicken Shit Grass” and the top soil felt and looked more like sand: I spread these 2 cubic yards across the front yard and part of the back yard that surrounds the swimming pool. • Lawns: four to six inches (100mm-150mm) of topsoil is required to let the roots of a newly laid lawn establish themselves. I want to ensure equal topsoil coverage to a depth of 3 inches with standard topsoil (110 lb/ft³). But for a vegetable garden, count on 12 inches; use 18 inches for raised beds. The process of adding a thin layer of soil on top of your lawn is a great way to improve it without disturbing existing grass. If you need to know how to grow grass from seed, or how to sod, we recommend a visit to our full modules on seeding and sodding for more tips. How much soil/top soil is needed for grass. Recommended depths for topsoil • General gardening: for most planting, such as for a herbaceous border, you'll need around 8 inches (200mm) of topsoil. Then I’ll show you how to do in a moment firstly, remember these numbers. How do you know how much soil is already in your … This can be a problem if you are growing grass from seed over a previous weedy lawn, the old weeds will grow through as well. (Grass and weeds will grow through soil 2 or 3 inches thick quite easily.) Make the calculations and see the changes. Rack it out so the grass seed is covered about 1/4 of an inch. When it comes to establishing and maintaining your lawn, knowing you have the right grass and grass seed for your area instantly increases the chances of growing a lush yard. Grass will compete with weeds from the beginning. This will allow the best combination of drainage and water retention to give your lawn the best foundation to grow from. Rolawn Limited, The Airfield, Seaton Ross, York, YO42 4NF, How to calculate volume & recommended depths. To fill a 3x6 bed with 10" sides, you will need 15 cubic feet of blended soil. When you buy a truckload of topsoil, it is often sold by the cubic yard. To add topsoil to an existing lawn, you'll only need a few inches. - it is a question frequently asked by people beginning their adventures in gardening and plant cultivation. How does the calculator work out the cost? Try using our Topsoil Calculator below to work out how much topsoil you need. For example, density is given in pounds per cubic yard and volume is given in cubic feet. And green roofs where there may be issues with the weight. Top soil is commonly sold in bulk bags which are approximately one cubic metre in size and hold just under a tonne of soil. It is widely available to buy in bags or in bulk from specialist suppliers, garden centres and DIY superstores. If you spend time to prepare the soil you have, your new grass seeds will sprout. Do make sure you select the correct units in the calculator. Then, the topsoil calculator would work out the total weight: $$Weight = Volume \times Density = 5\,ft^3 \times 110\,lb/ft^3 = 0.275\,t$$, $$Cost = Price\,per\,unit\,mass \times Weight = 30\,$/t \times 0.275\,t = $8.25$$. Calculate the number of bags of soil of certain size would be required to cover a given area with a given thickness of soil layer. Root vegetables such as potatoes and carrots will need 300 to 400mm, whereas vegetables such as salads, beans and courgettes will need a depth of 150 to 200mm. You can already jump to the third point of topsoil calculator instruction in How much soil do I need? Topsoil Calculator Use our topsoil calculator to calculate how many bulk bags of topsoil you require. STEP 2: Rake the soil to remove sticks, debris, and old grass. That’s why we created our topsoil calculator. Working out How much soil you need. You might be wondering what to do if your units are in different measurements? I have a gravel bed I would like to convert back into a bed/lawn of grass. If your existing soil is reasonably good quality, a shallower layer of new topsoil may be all that’s required to bring it up the required depth or assist with providing a level surface and good tilth. New lawns require about 9 inches of new topsoil to aid grass seed germination. Topsoil Calculation: How Much Topsoil Do You Need: Your Input Area: 1000 square feet Thickness: 3 inches Result You need a total of 250 cubic feet of topsoil, or 9.26 cubic yard of topsoil, or 167 1.5-cubic-foot bag of topsoil, or 125 2-cubic-foot bag of topsoil, or 84 3-cubic-foot bag of topsoil. Simply select the correct units in the drop down area for each measurement and the calculator will convert them using the following conversions: $$1\,foot = 12\,inches = 0.33\,yards = 30.48\,centimeters = 0.3048\,meters$$, $$1\,US\,short\,ton = 2000\,pounds = 0.893\,imperial\,long\,ton = 907\,kg$$. The calculator will also convert yards, feet & inches if your measurements aren’t in metres and millimetres. Calculating how much mulch or soil you need is simple and easy … just multiply LENGTH (m) X WIDTH (m) X DEPTH (m) or you can use the handy mulch and soil calculator below Growing grass recovers from the strain of new soil more effectively than dormant grass. 2020 S Hutton Limited T/A Fineturf Company Registered No. For the custom topsoil aggregate I can therefore calculate it density (in pounds per cubic yard) and price per unit mass (in dollars per pound): $$Density = {Mass \over Volume} = {5000\,lb \over 5\,yd^3} = 1000\,lb/yd^3$$, $$Price\,per\,unit\,volume = {Total\,soil\,cost \over Total\,soil\,volume} = {$100 \over 5\,yd^3} = 20\,$/yd^3$$. Turf, and indeed most plants, need a depth of around 15cm of good quality growing medium to sink their roots into. Be sure to know exactly the correct quantity for your project or you could find yourself spending more than is needed, and with a pile of topsoil you don’t need! Topsoil is most often sold by the metric tonne (1000kg), but the easiest way to calculate the quantity of topsoil required is by volume (cubic metres or litres). A cubic yard covers 36 square feet to a 9-inch depth and 27 square feet to a 12-inch depth. Turf ideally needs around four inches of top soil to root in. This is a good way of keeping your lawn nice and thick. 💰. (If you need to add more soil to a certain part of your yard, say 3-6 inches or more, just over-seed the area and it will look like new in a few weeks.) That means it can retain some moisture and nutrients, and also permits drainage. We’ll also help you understand the benefits to each, so you get the right product for your project. If you need to contact us please call +44 (0)1522 704444 or +44 (0)7908 518827. As a general rule, a tonne of a standard topsoil equals approximately 0.67m3. Enter the area to be covered and the desired thickness, and we'll tell you how much topsoil to get. Remove grass clipping, dethatching debris, and plugs of soil from aerating. It might contain very small stones and that’s perfectly OK. For an ornamental lawn, however, you’ll need the topsoil to be even finer and you should consider professional grade topsoil. Topsoil is sold by the cubic yard. We want to create enough space for the roots of grass to grow freely and without any obstacles. STEP 4: Use the till to add in some nutrients and organic matter. Topsoil is the uppermost layer of soil, which is high in nutrients and organic matter. Soil calculator supporting metric and imperial units - kg, tons, tonnes, cubic meters, cu ft, cubic yards, etc. How to Use our Topsoil Calculator. We know this can be tricky, especially when you are trying to estimate this by eye. It can be used for making new beds, borders, raised beds or as a base for lawns, where the … paragraph. In new properties the soil is often shallow and poor quality, therefore importing the full recommended depth of topsoil may be required. You can also enter your measurements into Rolawn’s handy Topsoil Calculator which will give you an indication of how many bags of the different Rolawn topsoils are needed. Use roughly 4/10 cubic yard of topsoil for every 1,000 square feet of yard you topdress. To answer this question, the first step is to establish the volume of soil needed. Prepare the Site Before adding topsoil, grading the lawn ensures water will flow away from buildings. Once again, the soil must be adequately raked and graded for proper drainage. Multiply the volume by the density (in the same units) to get the soil weight The cost of the topsoil is $30 per US short ton. You’ll need to get this old grass out as it can poison the roots of your new grass seed. Once you add more than 3 or 4 inches of soil, the amount of weeds and grass that will grow through starts to … Not everyone will need to add four inches however, you may just need to add an inch or two depending on the quality and depth of the existing soil. How Much Topsoil do I Need? It can be used for making new beds, borders, raised beds or as a base for lawns, where the natural soil … An established grass crop mowed no shorter than 3" is able to out compete as well as shade the soil to discourage weed seed germination. Vegetable and flower gardens require as much as 12 inches for best results. Use our Product Calculator to calculate how much topsoil you need. Have a big landscaping project on your to-do list that requires filling in natural areas with mulch or soil? These include compost, yard waste or a slow-release fertilizer. I want to know how much topsoil I will need, the weight of the aggregate and the total cost of the project. Step 5: Soil The soil mix that we recommend is a 50/50 sand to soil mix. It can also also make the lawn more susceptible to drought stress or require more frequent watering. There is also a way to figure out how much soil is needed to cover a particular amount of area. Compost is the most recommended material to use, as long as it is completely finished and has few fillers. Check the depth before you calculate the amount of topsoil you'll need for a base. Do not throw seed by hand! Real-time graphics. Roots don't grow well in … Estimate the density of the soil to be used. Let’s say that I have a rectangular garden bed which measures 5 feet in length and 4 feet in width. 04578064 (England and Wales) GB 371 494929 Company Reg No. Measuring in metres is simplest, as this will give you the volume of topsoil you need in cubic metres. Tel: 01904 757300 Fax: 01904 608272 Email: info@rolawn.co.uk VAT No. If you have the price per unit mass (e.g. I want to know how much topsoil I will need, the weight of the aggregate and the total cost of the project. Topsoil is the uppermost layer of soil, which is high in nutrients and organic matter. Imagine we buy soil in 40 pound bags, which is equivalent to 0.02 tons. Working in small areas a few square feet at a time, shovel out a small amount of your material. 1m3 will cover an of 40 square metres 25mm thick, for example: With the Lowe’s Mulch and Soil Calculator, figuring out exactly how much you need for the allotted space is easy. Prepare the Soil. cost per ton) or price per unit volume (e.g. Turf is a made up of thousands of living plants and all plants need growing medium to support them. Add the 2 inches of top soil then reseed the area that you added the top soil. If you are sowing a new lawn from scratch, spread your grass seed at a rate of 35g per square meter.. For overseeding an existing lawn, spread your seed at 25g per square meter.. How to Work Out How Much Seed You Need For a Square or … Asked August 11, 2016, 9:50 AM EDT. "How much soil do I need?" This means the soil has passed through a sieve with ¼” holes in it, twice. (that means 15cm would be expressed as 0.15 metres in your sums) The final answer is the volume – this is the figure you need. What if I’m using a custom soil aggregate on top of my lawn? Adding new topsoil is a great way to enrich and greatly improve the quality of existing soil in your garden. Otherwise, simply enter your measurements and appropriate units into our topsoil calculator to ensure your gardening project gets off to the best of starts! You might have noticed that we switch between units in our examples. The cost of the topsoil is $30 per US short ton. Estimate the volume of topsoil needed, using geometrical formulas and plans or measurements of the area. In addition, you can calculate the price per unit mass/volume for the custom soil aggregate: $$Price\,per\,unit\,mass = {Total\,topsoil\,cost \over Total\,topsoil\,weight}$$, $$Price\,per\,unit\,volume = {Total\,topsoil\,cost \over Total\,topsoil\,volume}$$. Bulk bags vary in size, so do check how much is in a bag when comparing different products. 4373077 Our calculator can also identify how much cricket loam, rootzone, sand, gravel and bark you need. Online topsoil calculator to estimate how much topsoil you need for your gardening project. To calculate how much topsoil you need, simply measure the dimensions of the area you wish to cover and multiply this by the depth required. Standard density for topsoil is around 100 lb/ft 3 (1600 kg/m 3). You have 1500 square feet and wish to put down 2" of topsoil. All that work and to throw seed or fertilizer by hand is just sad. It is time to choose the desired thickness (depth) of the topsoil level. For example: A site has an area of 10m x 15m and needs a coverage of 150mm. If you already have soil in your garden and you want to lay turf, how can you tell if you need more topsoil. You need to replace the topsoil to work with your existing subsoil, but just how much do you need? How much topsoil do I need is one of the most commonly asked questions by gardeners looking to buy topsoil. Using the measurements you provide from your lawn, our calculator first works out the area and volume of the soil required to ensure equal topdressing coverage. If there is enough topsoil on site to provide the depth needed, till it and remove all stones, debris and clumps of weeds. Example: How Much Soil Do I Need for a 3x6 Bed? I want to ensure equal topsoil coverage to a depth of 3 inches with standard topsoil (110 lb/ft³). Well, our calculator can take care of this for you. The exceptions are tree planting where deeper soils are needed. Grass will grow in 1.5 inches of topsoil, but the minute it gets dry or hot and there is not root system to support the plant it will die. Topsoil Calculator Use this topsoil calculator to find out how much topsoil you need to buy for your yard. I want to know how much topsoil I will need, the weight of the aggregate and the total cost of the project. Hello! Multiply the area you calculated earlier, by the depth of growing medium needed. Rack it out so the grass seed is covered about 1/4 of an inch. The process is straight-forward – you get new soil and add it to the top of your current soil, giving it an added boost … Well, our topsoil calculator has an option for “custom density”, which you can calculate using the formulae: $$Density = {Total\,mass\,of\,topsoil \over Total\,volume\,of\,topsoil}$$. The recommended depth of topsoil for creating lawns from turf or seed is 100 to 150mm. Calculate topsoil below to find the ideal quantity for your needs. 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