How to Grow Grass Between Pavers

Transforming the spaces between pavers into lush, green lawns can enhance your outdoor living area's aesthetics and functionality. This process, known as jointing, not only fills gaps but also prevents weed growth and stabilizes the paving surface. Here's a comprehensive guide on how to get grass to grow between pavers, ensuring a beautiful, low-maintenance landscape.

Before diving into the process, it's crucial to understand that not all grasses are suitable for growing between pavers. Choose a grass type that thrives in partial shade and has a fine texture, such as fine fescue, Kentucky bluegrass, or a mix specifically designed for paver joints. These grasses have shallow root systems and can grow in the limited space available.

Preparing the Paver Joints

The success of growing grass between pavers depends on proper preparation of the joint spaces. Start by ensuring the pavers are level and stable, with consistent joint widths, typically between 1/8" to 1/4".

Remove any existing debris, sand, or weeds from the joints using a stiff-bristled brush or a shop vacuum. This step is crucial for creating a clean, inviting space for new grass growth.

Choosing the Right Jointing Compound

Select a jointing compound specifically designed for growing grass, such as polymer-modified sand or a grass-growing compound. These products provide a stable base for grass roots while allowing water, air, and nutrients to pass through.

Avoid using plain sand or cement-based compounds, as they can prevent grass growth and make it difficult for the lawn to establish itself. Additionally, ensure the compound is compatible with the grass type you've chosen, as some compounds may inhibit grass growth.

Applying the Jointing Compound

Following the manufacturer's instructions, apply the jointing compound evenly across the paver joints using a trowel or a rubber squeegee. Fill the joints to the top, ensuring the compound is well-compacted and level with the paver surface.

Allow the compound to cure according to the manufacturer's guidelines. This process typically takes 24 to 48 hours, but it's essential to wait until the compound is completely dry and stable before proceeding with the next steps.

Planting Grass Seed in Paver Joints

Once the jointing compound has cured, it's time to plant grass seed in the paver joints. Choose a high-quality, fine-textured grass seed blend suitable for growing between pavers, and ensure the seed is fresh and viable.

Before sowing the seed, lightly rake the jointing compound to create small grooves or furrows. This step helps anchor the seed and promotes better contact with the compound, enhancing germination and growth.

Sowing the Grass Seed

Sow the grass seed evenly across the paver joints, using a seed spreader or a small, handheld spreader for even distribution. Aim for a seeding rate of 1 to 2 pounds of seed per 1,000 square feet, depending on the specific grass type and joint width.

Gently rake the seed into the jointing compound, ensuring good contact with the surface. Be careful not to bury the seed too deeply, as this can hinder germination. Lightly mist the seeded joints with water to moisten the seed and promote germination, but avoid overwatering, which can dislodge the seed or cause it to rot.

Caring for the New Lawn

Keep the seeded joints consistently moist during the germination period, which typically lasts 7 to 21 days, depending on the grass type and weather conditions. Water the area lightly using a fine mist setting on your sprinkler or watering can, and avoid walking on the newly seeded area until the grass has germinated and established itself.

Once the grass has germinated and reached a height of 2 to 3 inches, mow it for the first time, setting your mower blade to remove no more than one-third of the grass height. This initial mowing encourages the grass to produce stronger, deeper roots and promotes dense growth. Continue to mow the lawn regularly, following a consistent mowing schedule based on the grass type and season.

With proper preparation, application of the right jointing compound, and careful care, you can successfully grow grass between pavers, creating a beautiful, low-maintenance lawn that enhances your outdoor living space. Embrace the process, and enjoy the transformation of your paver joints into a lush, green oasis.