By Emily ParkerUpdated November 2026
Looking for a jonathan green organic lawn fertilizer that feeds your grass without harming the bees and other pollinators working in your yard? Jonathan Green sells several products with organic or natural-leaning formulas, and they differ in nitrogen content, release speed, and intended use. This guide compares seven of them. We weighed manufacturer specifications, brand reputation for turf products, and the feedback patterns owners commonly report, with an eye toward how each product fits a pollinator-friendly lawn. Nothing here reflects personal field testing, so check labels for current formulas before you apply.
Our top picks at a glance
- 1
TOP CHOICEBest overallNatural Grass Fertilizer, Contains Iron for Deep-Green Color JonathanView on Amazon - 2
TOP CHOICEBest for established lawns on a budgetJonathan Green 11591 Corn Gluten Lawn Fertilizer, 10-0-2 Formula, 5,00View on Amazon - 3
TOP CHOICEBest for seeding and soddingJonathan GreenStarter Fertilizer, Contains 25% Slow-Release Nutrition,View on Amazon - 4
Best for southern grass typesScottsGrass Fertilizer for Lawns with Southern Grasses, 5,000 sq. ft.View on Amazon - 5
Best liquid starter for new grassScottsLawn Fertilizer for New Grass, 7-12-15 NPK Turf Builder Liquid SView on Amazon - 6
Best slow-release single applicationPenningtonSlow Release Fertilizer for Grass, One Application Per SeasoView on Amazon - 7
Best for fall feeding12400 10-0-20 Winter Survival Fall Fertilizer, 1 (Single Pack)View on Amazon
Our Top Picks
| Product | Best for | Key feature |
|---|---|---|
| Jonathan Green Natural Grass Fertilizer | General feeding and color | Iron added for deep-green color |
| Jonathan Green 11591 Corn Gluten Lawn Fertilizer | Established lawns on a budget | Corn gluten meal base, 10-0-2 formula |
| Jonathan Green Starter Fertilizer | Seeding and sodding | 25% slow-release nutrition |
| Scotts Turf Builder Southern Lawn Food | Southern grass types | Formulated for warm-season grasses |
| Scotts Turf Builder Liquid Starter Lawn Food | New grass in liquid form | Fast-acting 7-12-15 liquid starter |
| Pennington Slow Release Fertilizer for Grass | One application per season | Slow-release 32-0-5 formula |
| 12400 10-0-20 Winter Survival Fall Fertilizer | Fall feeding and root health | High potassium for winter hardiness |
Jonathan Green Natural Grass Fertilizer, Contains Iron for Deep-Green Color Organic Lawn Food – 10-0-1 Grass Fertilizer – 5,000 Sq Ft
Natural Grass Fertilizer, Contains Iron for Deep-Green Color Jonathan Green Organic Lawn Food – 10-0-1 Grass Fertilizer – 5,000 Sq Ft
Best for: General feeding and deep-green color
This is a good fit for homeowners who want a straightforward organic-leaning lawn food with added iron, and who maintain an established lawn that needs regular greening. It is a sensible default if you are not dealing with seeding or a specific problem.
Key specs
- Analysis listed as 10-0-1 (nitrogen, phosphorus, potassium)
- Iron included for color
- Coverage listed as 5,000 square feet
Pros
- Iron supports a deeper green color without a heavy nitrogen push
- Organic-leaning formula suits pollinator-conscious yards
- Large coverage size for mid-sized lawns
Cons
- Low potassium may not satisfy lawns under stress
- Greening effect can be slower than fast-release synthetics
Bottom line: A solid all-round choice for established lawns that need steady color and gentle feeding.
Jonathan Green 11591 Corn Gluten Lawn Fertilizer, 10-0-2 Formula, 5,000-Sq. Ft. Coverage – Quantity 1
Jonathan Green 11591 Corn Gluten Lawn Fertilizer, 10-0-2 Formula, 5,000-Sq. Ft. Coverage – Quantity 1
Best for: Established lawns on a budget
Suited to homeowners who want a corn gluten-based feed that also acts as a pre-emergent for certain weeds. Keep in mind that corn gluten’s weed-suppressing effect applies to seed germination, so it works best when applied before weeds sprout.
Key specs
- Analysis listed as 10-0-2
- Corn gluten meal base
- Coverage listed as 5,000 square feet
Pros
- Corn gluten naturally inhibits some weed seed germination
- Organic base fits natural lawn programs
- Good value for large lawns
Cons
- Does not suppress weeds that have already emerged
- Nitrogen level is modest, so color response may be gradual
Bottom line: Best for owners who want a budget-friendly organic feed and a preventive weed step in spring.
Jonathan Green Starter Fertilizer, Contains 25% Slow-Release Nutrition, Promotes Faster and Thicker Growth Veri-Green Fertilizer for Seeding & Sodding – 5,000 Sq Ft
Jonathan GreenStarter Fertilizer, Contains 25% Slow-Release Nutrition, Promotes Faster and Thicker Growth Veri-Green Fertilizer for Seeding & Sodding – 5,000 Sq Ft
Best for: Seeding and sodding
Aimed at people establishing a new lawn from seed or sod. The blend of fast and slow-release nutrition is designed to support root development during the early weeks.
Key specs
- Contains 25% slow-release nutrition (per listing)
- Designed for seeding and sodding
- Coverage listed as 5,000 square feet
Pros
- Slow-release portion reduces burn risk on tender seedlings
- Targeted use for new grass
- Clear labeling for establishment projects
Cons
- Not intended for mature lawn maintenance
- Higher phosphorus focus means it should not be used as an everyday feed
Bottom line: The right pick when you are putting in new grass and need root-friendly early nutrition.
Scotts Grass Fertilizer for Lawns with Southern Grasses, 5,000 sq. ft. Turf Builder Southern Lawn Food, 14.06 lbs.
ScottsGrass Fertilizer for Lawns with Southern Grasses, 5,000 sq. ft. Turf Builder Southern Lawn Food, 14.06 lbs.
Best for: Southern grass types
For lawns of warm-season grasses such as St. Augustine, Bermuda, Zoysia, or Centipede. Scotts is a large turf brand, and this formula targets the feeding schedule of southern lawns.
Key specs
- Formulated for southern grasses
- Net weight 14.06 lbs.
- Coverage listed as 5,000 square feet
Pros
- Matched to warm-season grass needs
- Well-known brand with wide retail availability
- Large bag suits bigger yards
Cons
- Not an organic-certified formula, so check the label against your pollinator goals
- Not suitable for cool-season lawns
Bottom line: Pick this if your lawn is warm-season grass and you are comfortable with a conventional-leaning fertilizer.
Scotts Lawn Fertilizer for New Grass, 7-12-15 NPK Turf Builder Liquid Starter Lawn Food, 32 fl. oz.
ScottsLawn Fertilizer for New Grass, 7-12-15 NPK Turf Builder Liquid Starter Lawn Food, 32 fl. oz.
Best for: New grass in liquid form
Suits homeowners who prefer a liquid application for newly seeded or sodded areas and want quick uptake. Its higher phosphorus and potassium numbers reflect a starter role rather than routine feeding.
Key specs
- Analysis listed as 7-12-15 NPK
- Liquid format, 32 fl. oz.
Pros
- Liquid form gives even coverage on small patches
- Higher phosphorus supports root establishment
- Easy to apply with a hose-end sprayer
Cons
- Synthetic formula, so not a fit for strict organic programs
- Small volume is less practical for large lawns
Bottom line: Good for patch repairs and new seed in small areas, but not for purely organic lawns.
Pennington Slow Release Fertilizer for Grass, One Application Per Season for Lawn Growth and Greening Full Season Lawn Fertilizer 4M 32-0-5 RF 3/11.2Lb
PenningtonSlow Release Fertilizer for Grass, One Application Per Season for Lawn Growth and Greening Full Season Lawn Fertilizer 4M 32-0-5 RF 3/11.2Lb
Best for: One application per season
For busy homeowners who want a single full-season feeding. The slow-release design is meant to spread nutrition over several weeks.
Key specs
- Analysis listed as 32-0-5
- Slow-release, one application per season (per listing)
- Net weight 11.2 lbs.
Pros
- Low labor: one application covers the season
- Slow release reduces surge growth
- Strong greening from a high nitrogen level
Cons
- Not labeled as an organic product
- High nitrogen means careful spreading to avoid burn
Bottom line: A convenient season-long option if you accept a non-organic formula.
12400 10-0-20 Winter Survival Fall Fertilizer, 1 (Single Pack)
12400 10-0-20 Winter Survival Fall Fertilizer, 1 (Single Pack)
Best for: Fall feeding and root health
Intended for late-season feeding that supports roots and winter hardiness. It is a useful complement to a spring program rather than a standalone plan.
Key specs
- Analysis listed as 10-0-20
- High potassium for winter hardiness
Pros
- High potassium supports cold tolerance
- Lower nitrogen reduces late-season top growth
- Suited to fall timing
Cons
- Single-pack size is small for large lawns
- Not a complete season program on its own
Bottom line: Best as a fall finishing feed for owners who want stronger roots going into winter.
Buying Guide
Organic vs. Conventional Formulas
Check whether the bag names its ingredients as organic or simply lists an analysis. Organic-leaning products usually rely on materials such as corn gluten meal or composted sources. Synthetic-based products may feed faster but can work against a pollinator-first plan if used heavily.
Good picks for this: Jonathan Green Natural Grass Fertilizer, Jonathan Green 11591 Corn Gluten Lawn Fertilizer
Nitrogen Content and Release Speed
The first number in an NPK analysis is nitrogen, which drives green color and leaf growth. Slow-release products spread that feeding over weeks, reducing the risk of surge growth and burn.
Good picks for this: Pennington Slow Release Fertilizer for Grass, Jonathan Green Starter Fertilizer
Grass Type and Climate
Cool-season and warm-season grasses have different feeding calendars. Confirm your grass type before buying, since a product built for southern lawns may not suit a northern fescue or bluegrass yard.
Good picks for this: Scotts Turf Builder Southern Lawn Food, Jonathan Green Natural Grass Fertilizer
New Lawn Versus Established Lawn
Seeding and sodding need different nutrition than mature turf. Starter products usually carry more phosphorus to support roots, while maintenance feeds focus on nitrogen and potassium.
Good picks for this: Jonathan Green Starter Fertilizer, Scotts Turf Builder Liquid Starter Lawn Food
Coverage Size and Application Method
Measure your lawn before buying so you know whether a bag rated for 5,000 square feet will cover the area with a spreader setting. Liquid products suit small patches; granular products suit most full lawns.
Good picks for this: Scotts Turf Builder Liquid Starter Lawn Food, Pennington Slow Release Fertilizer for Grass
Seasonal Timing
Spring feeding supports growth, while fall feeding builds root reserves before winter. A fall-specific product with higher potassium fits the late-season window, but it works best alongside a spring program.
Good picks for this: 12400 10-0-20 Winter Survival Fall Fertilizer, Jonathan Green 11591 Corn Gluten Lawn Fertilizer
Safety Around Pets and Pollinators
Read the label for watering-in instructions and re-entry times. Even organic products should be kept off paved surfaces and away from water. If you have pets or children, follow the label closely and consult a professional if you are unsure about application.
Good picks for this: Jonathan Green Natural Grass Fertilizer, Jonathan Green 11591 Corn Gluten Lawn Fertilizer
FAQ
Is Jonathan Green organic lawn fertilizer safe for bees?
Organic-leaning formulas are generally gentler on pollinators than broad synthetic products, but no fertilizer is risk-free. Water granules in after application, keep blooming weeds unsprayed, and avoid drift onto flowering plants.
Does corn gluten fertilizer prevent all weeds?
No. Corn gluten meal can inhibit some weed seeds from germinating when applied before they sprout. It does not kill weeds that are already growing.
How often should I apply lawn fertilizer?
Most lawns benefit from two to four feedings a year, depending on grass type and product. Always follow the spreader setting and rate on the label.
Can I use a starter fertilizer on an established lawn?
Starter products carry higher phosphorus and are designed for new roots. For established lawns, a maintenance product with a balanced or nitrogen-focused analysis is usually more appropriate.
What is the difference between slow-release and quick-release fertilizer?
Slow-release products feed over several weeks, reducing surge growth and burn risk. Quick-release products act faster but need more careful application.
Do I need to water after applying granular fertilizer?
Usually yes. Watering in moves granules off the grass blades and into the root zone. Check the label for the amount of water it recommends.
Should I hire a professional for lawn fertilization?
If your lawn has disease, heavy compaction, or unknown soil conditions, a local extension office or certified lawn professional can recommend a soil test and tailored plan.
Conclusion
For most owners of established lawns who want a gentle, organic-leaning feed, Jonathan Green Natural Grass Fertilizer is a dependable starting point. Choose the corn gluten formula if you want a budget-friendly preventive step in spring, and the starter product when you are seeding or sodding. Warm-season lawns may do better with the Scotts southern formula, while fall feeding is covered by the high-potassium winter product. If keeping every input organic is your top priority, check labels closely and avoid the synthetic-based options.
Sources
- Research-based lawn care guidance from land-grant university extension programs (extension.org)
- Information on pesticide and fertilizer safety, including label reading and runoff prevention (epa.gov)
- Turfgrass management standards and fertilization recommendations for golf and lawn grasses
Related reading
- Top 5 Organic Fertilizers for Lawn Picks Compared for Bee-Safe Yards
- Organic Lawn Fertilizer Safe for Dogs: 3 Best Picks for Pet-Friendly Lawns
- 7 Best Organic Lawn Fertilizers for Fall: Our Picks Compared
- 6 Best Purely Organic Lawn Fertilizer Options for Bee-Safe Yards
- 6 Best Organic Winterizer Lawn Fertilizers for Fall Feeding
- 6 Best Organic Lawn Food Fertilizer Options for Bee-Safe Lawns (2026)
About Emily Parker
Emily Parker is part of our editorial team and reviews and edits our pollinator-safe lawn care guides, checking product details against manufacturer specifications and owner feedback.
