When and How to Plant St. Augustine Grass Seed

St. Augustine grass (Stenotaphrum secundatum) is a popular warm-season turfgrass known for its lush, green appearance and excellent tolerance to heat and humidity. If you’re considering planting St. Augustine grass seed to establish a vibrant and resilient lawn, it’s essential to follow proper timing and techniques to ensure successful germination and growth. This article provides a comprehensive guide on when and how to plant st augustine seed for a beautiful and thriving lawn.

1. Understanding St. Augustine Grass

Before diving into the planting process, it’s crucial to understand the characteristics of St. Augustine grass. This warm-season grass is well-suited for coastal and subtropical regions, where it can thrive in sandy soils and moderate shade. It features broad, flat blades that form a dense, carpet-like appearance, making it a popular choice for lawns and landscapes.

  1. Choosing the Right Time to Plant

Selecting the optimal time for planting St. Augustine grass seed is essential for successful establishment. Planting should be done during the active growing season, typically from late spring to early summer when soil temperatures are consistently above 60°F (15°C). This warm environment promotes rapid germination and root development.

  1. Preparing the Soil

Proper soil preparation is a critical step in ensuring the success of your St. Augustine grass lawn. Begin by removing any existing vegetation, rocks, or debris from the planting area. Use a shovel or rototiller to loosen the soil to a depth of about 4 to 6 inches. Incorporate organic matter, such as compost, into the soil to improve drainage and nutrient retention.

  1. Choosing the Right Seed

Selecting high-quality St. Augustine grass seed is vital for achieving the best results. Look for certified seed varieties that are well-adapted to your specific region and growing conditions. Common St. Augustine grass cultivars include ‘Floratam,’ ‘Palmetto,’ and ‘Seville,’ each with its unique characteristics.

  1. Seeding Techniques

There are two primary methods for planting St. Augustine grass seed: broadcasting and using a seed spreader. Broadcasting involves evenly distributing the seed by hand across the prepared soil. Alternatively, a seed spreader can help achieve a more uniform distribution. Aim for a seeding rate of approximately 1 to 2 pounds of seed per 1,000 square feet.

  1. Proper Seeding Depth

St. Augustine grass seed should be sown at a shallow depth to ensure proper germination. A depth of 1/4 to 1/2 inch is recommended. After seeding, lightly rake the soil to cover the seeds while allowing some to remain visible on the surface.

  1. Watering and Moisture

Consistent and adequate moisture is crucial for seed germination and establishment. Water the seeded area lightly immediately after planting to settle the soil and initiate germination. Keep the soil consistently moist but not waterlogged throughout the germination period, which typically takes 10 to 14 days.

  1. Fertilization and Maintenance

Once the grass seedlings have reached a height of about 2 inches, it’s time to apply a balanced, slow-release fertilizer to promote healthy growth. Follow recommended application rates based on the specific fertilizer product. Regular mowing should begin when the grass reaches a height of approximately 3 to 4 inches.

  1. Weed Control

Weed competition can hinder the establishment of your St. Augustine grass lawn. Consider applying a pre-emergent herbicide before seeding to prevent weed growth. Additionally, hand-pull any weeds that emerge to avoid competition for nutrients and water.

  1. Transitioning to Regular Lawn Care

As your St. Augustine grass lawn matures, gradually transition to a regular lawn care routine. Adjust your mowing height to maintain the recommended height for your chosen St. Augustine grass variety. Perform routine tasks such as watering, fertilizing, and pest control to ensure the long-term health and vitality of your lawn.


Planting St. Augustine grass seed requires careful consideration of timing, soil preparation, seeding techniques, and ongoing maintenance. By following the guidelines outlined in this article, you can establish a lush, vibrant St. Augustine grass lawn that enhances the beauty of your landscape and provides a comfortable outdoor space for relaxation and enjoyment. Remember that each step of the process contributes to the overall success of your lawn, so take the time to plan and execute each stage with care.

Leave a Reply

Back to top button