Starter Fertilizer 15-20-10 Plus Iron

Out of stock
0.00
6658A826EBC32
$6999

Shipping & Policies

Estimated Delivery This delivery estimate is based on the time it will take for the seller to ship out your order and for the carrier to deliver it.
Ships from United States

Sold by: Lawn Synergy

Returns: 30 days refund/replacement You can return any item within 30 days of delivery for a full refund or replacement, as long as it's unused and in its original packaging. Some products may be subject to restocking fees—see our return policy for full details.

Payment: Secure Transaction All payments are handled via industry-standard encryption and fraud protection. Your card details are never stored by us, and you’re covered by buyer-protection policies for a worry-free checkout.

Overview

  • Active Ingredient: 15% Nitrogen, 20% Phosphorus, 10% Potassium
  • Suitable for Lawn Types: Tall fescue, Bermuda, Zoysia, Kentucky bluegrass, St. Augustine, Ryegrass, Centipede
  • Special Features: Contains GreenTRX Organics, excellent starter fertilizer for grass seed
  • Application Rate: 3-5 lbs. per 1,000 sq. ft.
  • Coverage: 15 lb. bag covers 3,000-5,000 sq. ft.; best results at 3,000 sq. ft. per bag
  • Application Seasons: Spring, Summer, Fall, Winter
  • Seeding Waiting Period: None
  • Form: Granules
  • Brand: Lawn Synergy
  • Intended Use: Turf Grass

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Starter Fertilizer 15-20-10 Plus Iron
Out of stock
0.00

Quantity options

  CODE Availability Price  
Starter Fertilizer 15-20-10 Plus Iron
In stock
$3999
Starter Fertilizer 15-20-10 Plus Iron
6658A81FB8377
In stock
$4999
Starter Fertilizer 15-20-10 Plus Iron
6658A826EBC32
Out of stock
$6999

Description

Lawn Synergy’s Starter Fertilizer 15‑20‑10 Plus Iron is a premium product formulated for promoting strong root growth and vibrant green leaf blades on new lawns, overseeded turf and fresh sod. Formulated with balanced nutrients and additional organics, this product provides grass with the nutrients it needs from the start.

Nutrient Balance for Strong Growth

Before selecting a fertilizer, the user should also know the role of each nutrient. This starter mixture contains three important requirements for grass:

  • Nitrogen (15%): Nitrogen is food for grass blades that makes them turn green. This fertilizer provides regular and slow‑release nitrogen activation. The slow‑release segment feeds grass slowly during a few weeks. That helps prevent shocks from sudden growth spurts and the risk of a sunburn on tender, young seedlings.
  • Phosphorus (20%): Phosphorus is essential for healthy root growth. Young grass requires deep, healthy roots to absorb water and nutrients. This high phosphorus level enables seedlings to establish more quickly in the soil.
  • Potassium (10%): Potassium is what makes the blades of grass stand tall, and strengthens plant cells, to resist the stressors of heat, drought and disease that are inevitable in summer. It’s like a bodyguard, giving grass the strength it needs to stand up to everything from grueling heat and drought.

Advanced Technologies for Healthy Soil

This fertilizer is more than a basic nutrients package. It even has special ingredients to help improve soil health and the performance of your grass:

XCU Slow‑Release Nitrogen - XCU is a slow‑release, polymer‑coated form of nitrogen. It slowly releases small quantities of nitrogen over some 10 weeks. This steady feed allows grass to grow without sudden growth spurts or any wasted nutrients.

GreenTRX Organics - GreenTRX is the proprietary mix of natural and organic ingredients inside Lawn Synergy. It nourishes beneficial soil microbes. These microbes help to break down nutrients, which the grass roots can then take up more easily. With a healthier soil biology comes thicker and more durable turf.

Iron and Ammonium Sulfate (3.5%) - Grass becomes a deep, dark green from iron. Ammonium sulfate adds an extra nitrogen boost and can reduce soil pH if it’s too high. Together, these elements help draw out the rich green color that so many homeowners desire.

Grass Types and Best Seasons

This starter fertilizer can be used with most common lawn grasses. It works well with:

  • Tall fescue
  • Bermuda grass
  • Zoysia grass
  • Kentucky bluegrass
  • St. Augustine grass
  • Ryegrass
  • Centipede grass

Since it feeds slowly and gently, it can be used any time (spring, summer, fall or even winter). There is no waiting period after user broadcast the granules, meaning grass seed or sod can be installed as first thing.

How to Apply for the Best Results

It’s all in how it is applied. Follow these simple steps:

  1. Calculate the square footage. This fertilizer covers a rate of 3-5lbs per 1,000sqft.
  2. A 15‑lb bag covers 3,000–5,000sqft. To establish as quickly as possible, shoot for 3,000sqft per bag.
  3. Apply with a broadcast or drop spreader at the recommended rate. Walk consistently to create an even spread.
  4. Water lightly to aid in the dissolving of the granules, as well as the movement of nutrients into the soil.
  5. After grass has grown in (a couple of 4–6 weeks), switch to a higher nitrogen maintenance fertilizer to keep it green and growing.

Comparing Starter vs. Maintenance Fertilizers

Starter fertilizers emphasize phosphorus for root development, while maintenance blends lean on nitrogen to sustain growth and color. Lawn Synergy 15-20-10 Plus Iron is ideal for establishment. Once the lawn is established, a maintenance product with a higher percentage of nitrogen (like 20‑0‑10) will keep the grass looking its best.

Final Thoughts

For anyone interested in putting in new grass or repairing an old lawn, Lawn Synergy Starter Fertilizer 15‑20‑10 Plus Iron is a reliable, proven formula. Its balanced blend of nutrients and soil friendly organics helps to produce thick, strong, green grass from the beginning, and its slow release formula lasts all season. Whether over seeding a bare patch or laying down a new sod, this starter blending contains everything treats grass seeds need to thrive.

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Features

Size:
45lbs

Attachments

Label (15-20-10.pdf, 192 Kb) [Download]

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