Top soil provides the nutrients and minerals your plants, vegetables and shrubs needs to flourish and grow into healthy, happy plants. There are many different uses for topsoil including using it to build gardens, fix lawns and make drainage better.
Good quality topsoil contains a rich mix of nutrients necessary for healthy plants. It appears darker than subsoil because of the organic matter it contains. The right type of topsoil retains water as well as nutrients, promoting healthy plant growth. A rich layer of quality topsoil ensures healthy lawns and gardens.
For example, topsoil will be a better choice if you are filling a large land area. This is because it is relatively cheaper and will offer better coverage than lawn soil. In a smaller land area, lawn soil may be better because it is specifically designed to provide necessary nutrients to plants.
Topsoil helps protect the roots of plants by locking in moisture that is already drained into the soil. Topsoil ensures there is more water for your plants because it prevents evaporation, so even during periods of little rainfall, your plants can have the moisture they need.
Those nutrients usually need to be replenished every so often for the healthiest growth, no matter which type of soil you have. This is especially true for the soil where you grow annual flowers and vegetables, which suck up a lot of nutrients to fuel their rapid growth.
The main disadvantages of topsoil are that it can be difficult to predict its quality, it may contain pollutants and weed seeds, and it can be expensive. The quality of topsoil can vary greatly depending on the region and the supplier.
Rich topsoil is as beneficial for new grass as it is for old. Few people realize they can significantly boost the health of their lawn by carefully adding new topsoil. If you simply pile the soil on, you can kill the grass.
Although it's possible for grass to grow through the topsoil, this can only be successful depending on the thickness of topsoil applied as a top dressing. Please note that before applying topsoil over existing grass, you will need to mow the turf first.
Topsoil Uses Can Include Fixing Uneven and Patchy Lawns
You may even notice areas of your yard that are slightly uneven. Topsoil is a great remedy for both problems. To grow grass, simply spread topsoil across the area so it is 1 inch deep. Evenly distribute grass seeds and till the soil to combine.
Soil Depth is Crucial
Topsoil is typically thought of as the top 6 inches of soil. We recommend adding at least 2 to 3+ inches of topsoil and rototilling it 2 to 3+ inches into the existing dirt to get the recommended 6 inches depth.
Topsoil is composed of mineral particles and organic matter and usually extends to a depth of 5-10 inches (13–25 cm).
Incorporating topsoil into an area of lawn or a garden that tends to hold water improves the location's drainage. Use sandy topsoil combined with organic matter, such as compost or ground pine bark, and till it into the existing soil to a depth of 12 inches to create good drainage in the root zone area of plants.
Degraded soil makes growing food more difficult and expensive. Without healthy soil, farmers won't be able to grow nutrient-dense food to feed our growing population. The calculated loss in the region is part of a critical issue; some experts suspect that Earth will run out of usable topsoil within 60 years.
Whereas topsoil is better suited for a wide range of projects, gardening soil usually fits more of a niche need, sometimes even plant-specific needs. Gardening soil is a combination of a mixture of soils and textures that is designed to target a specific type of gardening project.
Any time you stir up soil and water it, you'll get weeds – even if added soil was "clean." Weed seeds are typically throughout topsoil, and it's when they're brought close to the surface and watered that they germinate.
Usually, 8 inches of topsoil is needed to fill a new garden bed or raised bed. If you intend to add topsoil to your lawn, you will need approximately 4-6 inches of topsoil to give you the healthy lawn you desire.
Along with planting grass, there are additional tasks that can be completed to protect and help the grass grow well. Many think that putting topsoil over the seeds would protect it, but in fact, that will actually suffocate the seedlings rather than doing any good.
Do not put top soil over grass seed, but you can add a thin layer of organic matter to help the seed to germinate. 'Never put topsoil over newly planted grass seed,' says Yamaguchi. 'This won't provide healthy growing conditions – it will actually prevent the seedlings from sprouting by essentially suffocating them.
The earlier in the growing season the better. Generally late spring to early summer is best. If you top dress in winter when your lawn is in its dormant phase, you run the risk of damaging or even killing your lawn entirely.
By spreading grass seed over your existing lawn, you can thicken up the thin areas, and your lawn will start to look terrific again.
Consider this: half of the topsoil on the planet has been lost in the last 150 years due to erosion, unethical farming methods, compaction, loss of structure, nutrient degradation, and salinity. Loss of topsoil leads to the loss of fertile land, increased pollution, and sedimentation in streams and rivers.
But there is still a way to go — not only in the U.S., but worldwide. Six years ago, the United Nations' Food and Agriculture Organization said soil degradation was proceeding at such a rate that the world may only have 60 harvests left, noting that it takes up to 1,000 years to build 3 inches of topsoil.
In the last few decades, soil degradation has been sped up by intensive farming practices like deforestation, overgrazing, intensive cultivation, forest fires and construction work. These actions disturb soil and leave it vulnerable to wind and water erosion, which damages the complex systems underneath.