Description
*IMPORTANT* If you would like to add a bag of fertilizer to an existing delivery order, please place a separate pickup order for the fertilizer and we will connect the two orders, or call 401-885-0600. Thank you -Watson Materials
Jonathan Green Starter Fertilizer – 50 lb Bag
Give your new lawn in East Greenwich, or anywhere in Rhode Island a strong nutritional foundation with Jonathan Green Starter Fertilizer (10-15-5). Formulated with a high-phosphorus nutrient ratio, this 50-pound professional-grade bag is engineered to accelerate rapid seed germination and drive deep, vigorous root development. Designed for new turf construction and overseeding projects across southern New England, it delivers consistent, sustained nourishment for up to two full months to support tender seedlings through critical early growth phases.
Key Features & Benefits
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High-Phosphorus Analysis (10-15-5): Delivers a specialized nutrient balance focused heavily on phosphorus to stimulate dense, deep root mass formation in young turf.
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Extended 2-Month Feed: Feeds newly planted grass seedlings continuously for up to eight weeks, reducing the need for frequent follow-up applications.
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Universal Seeding Compatibility: Highly effective when establishing brand-new lawns from seed, thickening thin or patchy turf during overseeding, or installing fresh sod rolls.
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Granular Uniformity: Precision-manufactured granules distribute evenly through standard drop and rotary spreaders, preventing patchy striping or fertilizer burn.
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Convenient 50 lb Commercial Size: Heavy-duty bag capacity designed to cover large residential lawn areas efficiently in a single pass.
Ideal Applications
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Newly seeded residential lawns and freshly graded construction yards
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Thin or patchy turf areas undergoing seasonal overseeding
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Fresh sod roll installations requiring rapid root attachment to native soil
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Commercial landscape renovation and turf establishment projects
Frequently Asked Questions
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How many square feet does a 50 lb bag of Jonathan Green starter fertilizer cover? A standard 50 lb bag typically covers approximately 10,000 to 12,000 square feet, depending on the spreader calibration and application rate specified on the product label.
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When is the best time to apply starter fertilizer? Apply the fertilizer on the exact same day you sow grass seed or lay sod. Fall and spring are optimal seasons when moderate air temperatures and moist soil favor rapid germination.
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Should I water my lawn immediately after spreading the fertilizer? Yes. Water the treated area thoroughly right after application to wash granules off grass blades and activate the nutrient release into the soil, avoiding heavy puddling or runoff.
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Is this item available for delivery or pickup? It is available for in-store pickup at Watson Materials, and can also be added onto your bulk material order upon request (must be processed as a separate online transaction).
Pro Contractor Tip
Before applying starter fertilizer, ensure your soil pH is tested and your seedbed is finely graded, lightly raked, and firmed with a lawn roller to ensure optimal seed-to-soil contact. Calibrate your rotary spreader prior to application to ensure an even 100% overlap distribution rate across the entire seedbed.
Additional Information
- 1
- Granular Turf Fertilizer (10-15-5 Analysis)
- Gray / Tan Granular Blend
- ~10,000 to 12,000 sq. ft. per 50 lb bag
- 50 lbs (22.68 kg) per bag
- Professional Horticultural Grade Fertilizer
- Delivery is available within RI. See the Delivery Info page for details.