Topsoil is the layer of organic matter that sits on top of the garden soil to protect the plants, repair the soil, and facilitate temperature control and fertilization. There are many types of topsoil, and each has its benefits – here are three of the most common varieties and what they’re useful for.

3 Topsoil Options

1. Cindersoil

This variety is made of volcanic cinder that’s ground into varying consistencies. Cindersoil is often mixed with other substances, such as peat and sphagnum, to alter its consistency and make it suitable for growth.

Cindersoil is useful for potted plants and gardens due to its porosity, which maintains the soil’s oxygen levels and reduces the risk of root rot. Additionally, this variety isn’t comprised of decayed organic materials, so there’s less chance of it attracting insects to the garden.

2. Macadamia Nut Mulch

Macadamia nut shells and tree husks are composted and turned into mulch. The mulch retains the nitrogen from the shells and offers them to the plants. This type of topsoil also helps the medium retain moisture, making it ideal for new gardens since young plants and trees need more water to survive.

3. Dolomite

Dolomite is finely ground limestone, and it contains calcium and magnesium. These nutrients increase the pH of the soil, helping it retain nutrients. While this is helpful to increase the nutrient absorption of the plants, excessive amounts of dolomite can make the soil too acidic and have the reverse effect. Dolomite works best as a component of a topsoil mix, rather than by itself.

If you need topsoil for your garden, contact the team at Sanford’s Service Center in Pahoa, HI. This locally owned material provides Big Island residents and businesses with quality topsoil. They offer cindersoil and macadamia nut mulches to custom mixes that are made to suit your lawn’s needs. View their products online, or call (808) 965-8144 to schedule a delivery.