Types of Moss Between Stones in Walkways

Moss Types

• Sheet moss (Hypnum) does best in full shade, but can withstand dappled sunlight. Consider purchasing ground sheet moss. Sheet moss that has been ground into 1/4-inch fragments spray easily between walking stones to fill in the gaps, and is especially effective over a large patio or long path. It produces a medium green color and can tolerate moderate foot traffic well. Hair cap moss (Polytrichum) has root type structures that help it adhere to the soil in the pathway. It grows well in partial shade. A light a green in color, cushion moss (Leucobryum) survives in sandy soil. It will also tolerate partial sun. Exceptionally hardy, rock cap moss (Dicranum) has long been a favorite in Japanese gardens around the world. The moss offers a solid cover with medium green coloration.

Requirements

• Moss requires shade and moist soil to thrive. If the region suffers from excessive heat, the moss will require supplemental watering. Moss prefers a planting location with a soil pH of 4.5 and 6.0. If the soil has a high pH level consider adding liquid sulfur or aluminum sulfate prior to planting the moss to bring down the pH. Plant moss plants in the spring or fall months for the best chance at success.

Planting

• Moss can begin to spread in 6 to 12 months after planting. Once established, moss will usually survive on only rainfall and humidity, but when first planting keep the moss moist. Prior to laying the moss, make sure the soil feels exceptionally moist to the touch. Moss grows best during the rainy months of spring and fall. Brachythecium moss offers a rapid growth rate. Consider spacing the moss 12 inches apart in the gaps between the walkway. Within 12 months, the Brachythecium moss will usually produce an attractive filler around the stone pathway. Irish moss (Sagina subulata) fills in the area around stepping stones well. Not a true moss, Irish moss is a herbaceous perennial. It requires remarkably little attention and spreads easily. Scotch moss (Sagina subulata 'Aureus') offers a yellowish-green color to brighten shady areas.

Care

• When first established consider picking up leaves and other debris by hand. Once the moss freezes in the autumn, it can tolerate light raking. Consider laying a net over the moss to catch falling leaves or debris during the fall months. Lift the net to remove the debris cover safely from the moss. During times of drought, established moss will dry out and turn brown, but it will return once abundant rainfall or irrigation return.