For spring lawn fertilization, the best type of fertilizer typically has a higher nitrogen content to promote lush green growth and help grass recover from winter stress. Look for fertilizers with NPK ratios such as 16-0-8, 20-2-3, or 20-5-10, which provide ample nitrogen along with moderate phosphorus and potassium
. Key points for spring fertilizer choice:
- Nitrogen (N): Essential for green leaf growth and overall lawn greening after dormancy. A higher nitrogen percentage (around 16-25%) is ideal in spring to jumpstart growth
- Phosphorus (P): Supports root development, especially important for new lawns or overseeding. Established lawns usually need less phosphorus, so moderate amounts (around 5-7%) suffice
- Potassium (K): Enhances stress tolerance and overall lawn health, helping grass withstand temperature changes and drought. Moderate potassium (around 8-24%) is beneficial in spring
Types of fertilizers:
- Granular fertilizers are preferred in early spring, especially if grass is still dormant or brown, as they release nutrients steadily and are better absorbed in cooler soil temperatures
- Slow-release nitrogen fertilizers provide steady feeding over time, supporting healthy, thick grass growth without over-stimulating
- Liquid fertilizers act faster but are better used once grass is actively growing, not when dormant
Recommended products and formulations:
- Stress 12-0-24 (high potassium, moderate nitrogen) for stress tolerance and greening
- Humic Max 16-0-8 with slow-release nitrogen and humic acid for soil health and green-up
- Complete 14-7-14 for balanced nutrients including phosphorus for root growth
- Scotts Turf Builder Triple Action for feeding, weed control, and crabgrass prevention in warm-season lawns
Timing: Apply fertilizer when grass begins to green and grow actively, which varies by region-February in warmer areas, April or May in colder climates
. In summary, use a granular, slow-release fertilizer with a higher nitrogen content and moderate phosphorus and potassium in spring to promote healthy green-up and root development while preparing your lawn for the growing season ahead. Avoid high-urea fertilizers if soil temperatures are below 55°F, and prefer ammonium-based nitrogen sources for better absorption in early spring
