Maintaining a lush, healthy lawn throughout the year requires more than just regular mowing and watering. Choosing the best grass fertilizer and applying it according to seasonal needs is key to achieving consistent green growth and stress resistance. This guide will walk you through the year-round application of the best grass fertilizer based on climate, nutrient needs, and turf type.
Matching the Best Grass Fertilizer to Each Season
Each season places different physiological demands on your grass, making it important to adapt your fertilization strategy accordingly. The best grass fertilizer formulas vary in nitrogen (N), phosphorus (P), and potassium (K) content to suit these changes.
- Spring: A balanced fertilizer like Ugarit 25-25-25 + TE supports early shoot growth and root development.
- Summer: Heat and drought require potassium-rich products such as Ugarit 0-5-65 to improve tolerance and prevent scorch.
- Fall: Promote strong root systems before winter with phosphorus-dense formulas like Ugarit 10-65-10.
- Winter (in warm climates): Light nitrogen applications with micronutrients, like those found in Biofast (12-12-12 + 24% Humic/Fulvic), maintain minimal activity without overfeeding.
Yarafert solutions are seasonally optimized to release nutrients gradually, avoiding over-fertilization.
READ MORE: Best Lawn Fertilizer for Weeds and Crabgrass Control
Seasonal Nutrient Needs and the Best Grass Fertilizer

Grasses require a tailored mix of NPK throughout the year, along with secondary nutrients and micronutrients. Here are some seasonal nutrient strategies:
Spring:
Stimulates green-up and recovery from dormancy.
- High nitrogen content (e.g., Ugarit 40-10-10 + TE)
- Secondary elements like calcium and magnesium found in CALCIMAG for cell wall strength
Summer:
Aims to build resistance against heat and pests.
- Potassium-dominant fertilizers (e.g., Super DKP, Ugarit Multi)
- Sulfur content to aid in protein synthesis, such as in SULPHOMIN
Fall:
Prepares grass for overwintering.
- Emphasis on phosphorus and potassium
- Micronutrients such as iron and manganese from SULFOMIX help maintain color
Winter:
Use only in regions with warm-season grass types and active growth.
- Light feeds using balanced, low-N products like Ugarit 10-10-40 + TE
READ MORE: Best Grass Fertilizer for Winterizing Your Lawn Before Frost
Storage Tips for the Best Grass Fertilizer Year-Round
Proper storage of fertilizers maintains efficacy and safety throughout the year. To ensure your best grass fertilizer remains potent and ready for seasonal use, follow these essential tips:
- Keep dry: Moisture can cause clumping and nutrient degradation.
- Seal containers: Oxygen exposure can oxidize sensitive components.
- Label by season: Organize your fertilizers into spring, summer, fall, and winter groups for easier planning.
- Store in cool conditions: High temperatures can affect stability in liquid fertilizers like Ugarit DKP or SULPHOMIN.
How Often to Use the Best Grass Fertilizer Throughout the Year
Application frequency depends on lawn type, growth rate, and environmental stress. However, the following general recommendations apply to most turfgrass systems:
- Spring: Every 4–6 weeks from green-up through early summer
- Summer: Reduce frequency to once every 6–8 weeks; consider slow-release blends
- Fall: Apply twice—early fall and late fall—to build reserves
- Winter: Apply sparingly if needed; avoid when grass is dormant
Tips for frequency management:
- Use slow-release options like Ugarit 27-27-27 + TE for longer intervals.
- For quick correction, foliar feeds with Biofast or CALCIMAG can provide immediate uptake.
- Monitor leaf color and growth to adjust the timing.
Adjusting Application Rates for the Best Grass Fertilizer by Month

Monthly adjustments help avoid overfeeding and nutrient leaching. Here’s a month-by-month breakdown to help fine-tune application rates:
Month | Suggested N Rate (lb/1000 sq ft) | Recommended Product |
---|---|---|
March | 0.5–0.75 | Ugarit 25-25-25 + TE |
April | 0.75–1.0 | Ugarit 40-10-10 + TE |
May | 0.5 | CALCIMAG |
June | 0.25–0.5 | Ugarit 10-10-40 + TE |
July | 0.25 | Ugarit K-T-S 25 (high K) |
August | 0.25–0.5 | Ugarit Multi |
September | 0.75 | Ugarit 10-65-10 |
October | 0.5–0.75 | Ugarit 0-5-65 |
November | 0.25 (if needed) | SULFOMIX |
December–February | As needed only | Biofast (low rate) |
Adjust based on grass type and climate. Warm-season grasses (e.g., Bermuda) differ from cool-season ones (e.g., fescue) in timing.
final thoughts
Your lawn’s health depends on understanding both the timing and composition of the best grass fertilizer for every season. Whether you’re promoting growth in spring, building resilience in summer, or preparing for winter dormancy, choosing the right nutrient profile is essential.
Explore our full line of YaraFert, Ugarit, and Biofast solutions tailored for seasonal success. For expert advice on application rates and timing, contact our agronomy team or browse our product catalog online. Get started today on building a vibrant, resilient lawn—season after season.
READ MORE: Best Lawn Fertilizer for New Grass Seed: Boost Germination & Growth