Description
Sphagnum moss is one way to retain moisture in potted plants, and its stringy, fibrous nature makes it an attractive option for hanging baskets. However, confusion exists as to the difference between sphagnum moss and peat moss (sometimes referred to as sphagnum peat moss). The origin of these two popular soil amendments is similar, but how and why you would use each one may differ.
The phrase “sphagnum moss” actually refers to a large genus of moss with some 380 members. Most sphagnum moss you would find in your local store is harvested from wetlands or bogs. Whether you're shopping for sphagnum moss or peat moss, you'll find that both are dead, dried material from the sphagnum moss plant. They are well-loved by gardeners and artists for both soil amendments and arts and crafts.
Sphagnum moss is collected from still-living moss on the surface of bogs and wetlands. These chunks of living plant material are dried after harvesting, making the final product a pure chunk of the sphagnum moss, not a combination of other dried material.
How to Use Sphagnum Moss
Sphagnum moss is useful for a variety of gardening and crafting purposes, however, its higher cost and less diverse organic matter make it a better fit for speciality purposes.
You'll often see it used for creating a Kokedama (which is a moss ball planter), seed starting, as a planting medium for orchids, as a potting soil amendment, for lining baskets, or for other art projects.
It has a neutral pH level and is great for retaining moisture in the soil, even when dried. It is often found in smaller bags in both craft stores and garden centers. In addition, live sphagnum moss is a popular choice for terrariums.
Some of the key reasons for using sphagnum moss are outlined below.
As a Soilless Potting Medium
Sphagnum moss is commonly used when growing succulents or orchids indoors. It is light and holds moisture very well. It doesn't become overly soggy though, so it means your plant is less likely to be bothered by root rot issues.
Depending on the plant, it might be used on its own or mixed with soil or another potting medium. On its own, waterings may need to be more frequent and fertilizers may be required as sphagnum moss does not hold much in the way of nutrients.
As a Liner or Form Builder
The soft, light, pliable form of sphagnum moss makes it a popular choice for lining hanging baskets or for using to create and hold the shape when making up succulent wreaths or other frame built floral displays.
For Decorative Purposes
When used in container planting, sphagnum moss isn't just practical, it can also be decorative. It can enhance the finished look of a pot, basket or terrarium and helps to fill in dead space.
Quality and Sustainability of Sphagnum Moss
Sphagnum moss is considered to be more sustainable and environmentally friendly than peat moss. Peat moss can take centuries or more to develop and be ready to harvest, whereas sphagnum moss is ready to harvest in under a decade. When sourcing your sphagnum moss it is still recommended to look for a reputable and sustainable supplier.
Sphagnum moss can vary significantly in its ability to absorb moisture, the quality and length of the fibres, and its appearance. Take the time to research suppliers with good reputations.
Keep these important points in mind the next time you're perusing the garden centre or nursery to avoid becoming bogged down in your moss options.
If you want to add a decorative, yet functional feature to your hanging baskets, reach for sphagnum moss.