Description
Give a new lawn its best possible start with Jonathan Green Veri-Green Starter Fertilizer for Seeding & Sodding. This phosphorus-rich 12-18-8 granular starter is formulated to grow thicker grass roots faster — the foundation new seedlings and fresh sod need to survive heat, drought, and foot traffic. Apply it the same day you seed or lay sod to jump-start germination and establishment. Choose the 4.5 lb bag for small areas, the 15 lb bag for mid-size lawns, or the 45 lb bag for large properties.
Key Features
- Phosphorus-rich 12-18-8 analysis: The high middle number (phosphorus) drives rapid root formation, which is exactly what new grass needs.
- Built for seeding & sodding: Apply anytime seed or sod is used to help new grass grow quicker and thicker.
- Contains humates: Enhances the efficiency, availability, and exchange of plant nutrients to and from the soil.
- Feeds up to 2 months: Sustained nutrition through the critical establishment window.
- Strong, hearty root systems: Healthy roots help young seedlings withstand harsh weather.
- Three sizes: 4.5 lb covers up to 1,500 sq ft; 15 lb up to 5,000 sq ft; 45 lb up to 15,000 sq ft.
Coverage Guide
- 4.5 lb — up to 1,500 sq ft
- 15 lb — up to 5,000 sq ft
- 45 lb — up to 15,000 sq ft
How to Use
- Apply at seeding or sodding: For best results, spread on the same day you seed a new lawn or install sod.
- Spread evenly: Use a rotary, drop, or hand-held spreader set to the rate on the bag.
- Water in: Keep the seed bed moist for the first few weeks while grass germinates.
- Check local ordinances: Some regions restrict phosphorus application timing — confirm before applying.
Specifications
- Brand: Jonathan Green
- Analysis (N-P-K): 12-18-8
- Type: Phosphorus-rich granular starter fertilizer
- Best for: New grass seeding and sod installation; all grass types
- Also contains: Humates for improved nutrient exchange
- Feeding duration: Up to 2 months
- Available sizes: 4.5 lb (1,500 sq ft), 15 lb (5,000 sq ft), 45 lb (15,000 sq ft)
What Do the Numbers 12-18-8 Mean?
The three numbers on every fertilizer label are the N-P-K ratio — the percentage by weight of the three primary nutrients:
- 12 — Nitrogen (N): Fuels green, leafy top growth. A moderate level here greens up new grass without forcing it to outgrow its young root system.
- 18 — Phosphorus (P): The star of a starter fertilizer. Phosphorus powers root development and seedling establishment — which is why it’s the highest number in this blend.
- 8 — Potassium (K): Builds overall hardiness and stress tolerance, helping new turf resist heat and drought.
A high-phosphorus blend like 12-18-8 is what makes this a true starter fertilizer: it’s engineered for the rooting-in phase of a brand-new lawn, not for routine feeding of established turf.
Stop by Garoppo’s to pick one up, or schedule local delivery within our service area.



