Organic fertilizer 5-3-0 bioboost
BioBoost 5-3-0 Organics Lawn Fertilizer
BioBoost 5-3-0 Organics Lawn Fertilizer
5-3-0 BioBoost with 2% Iron Organic Fertilizer
BioBoost 5-3-0 Organics Lawn Fertilizer
BioBoost 5-3-0 Organics Lawn Fertilizer
organic lawn fertilizer granules
BioBoost 5-3-0 Organics Lawn Fertilizer
BioBoost 5-3-0 Organics Lawn Fertilizer
BioBoost 5-3-0 Organics Lawn Fertilizer
Organic fertilizer 5-3-0 bioboost
BioBoost 5-3-0 Organics Lawn Fertilizer
BioBoost 5-3-0 Organics Lawn Fertilizer
5-3-0 BioBoost with 2% Iron Organic Fertilizer
BioBoost 5-3-0 Organics Lawn Fertilizer
BioBoost 5-3-0 Organics Lawn Fertilizer
organic lawn fertilizer granules
BioBoost 5-3-0 Organics Lawn Fertilizer
BioBoost 5-3-0 Organics Lawn Fertilizer
BioBoost 5-3-0 Organics Lawn Fertilizer
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BioBoost 5-3-0 Organics Lawn Fertilizer

BioBoost 5-3-0 Organics Lawn Fertilizer feeds your lawn with gentle organic nutrition while helping improve soil health over time. It’s a great choice for building stronger, greener turf without pushing excessive top growth.
  • Builds Healthier Soil for Long-Term Results
  • Slow-Release, No Burn Formula
  • Deep Green Color with Iron
$39.99

Safe to apply anytime for steady growth and improved soil health

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Expert Support Available
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Product Description

Build healthier soil while giving your lawn gentle, slow-release nutrition. BioBoost 5-3-0 is a low-nitrogen biosolids fertilizer made for improving soil organic matter, nutrient-holding capacity, and long-term lawn health without forcing excessive top growth.

Its slow-release formula is especially useful during summer heat, on lawns with poor soil, and around newer homes where the original topsoil may have been removed or heavily disturbed during construction.

Why Choose BioBoost 5-3-0?

  • Builds Soil Organic Matter: Adds organic material that helps improve the soil over time.
  • Improves Nutrient-Holding Capacity: Helps sandy, compacted, and low-organic-matter soils hold nutrients more effectively.
  • Safe for Summer Feeding: The low-nitrogen, slow-release formula provides gentle nutrition without pushing excessive growth during hot weather.
  • Supports Better Lawn Color: Provides steady nutrition with added iron for a deeper green appearance.
  • Ideal for Poor or Disturbed Soil: A great choice for new-construction lawns with minimal topsoil or weak soil structure.

Best Uses

  • Building organic matter in low-quality soil
  • New-construction lawns with limited topsoil
  • Summer applications during high heat
  • Improving sandy or low-CEC soil
  • Adding gentle nutrition to an existing lawn program
  • Lawns that do not need a heavy nitrogen application

Application Rate

Routine Lawn Maintenance: Apply 5 lbs per 1,000 sq ft to provide gentle nutrition and maintain soil organic matter. 

Building Soil Organic Matter: Apply 10–15 lbs per 1,000 sq ft when working to improve poor soil, increase nutrient-holding capacity, or rebuild soil around a new-construction home.

  • 18 lb bag at 5 lbs per 1,000 sq ft: Covers approximately 3,600 sq ft
  • 18 lb bag at 10–15 lbs per 1,000 sq ft: Covers approximately 1,200–1,800 sq ft
  • 50 lb bag at 5 lbs per 1,000 sq ft: Covers approximately 10,000 sq ft
  • 50 lb bag at 10–15 lbs per 1,000 sq ft: Covers approximately 3,333–5,000 sq ft

Spread evenly over the lawn with a fertilizer spreader and water after application to begin moving the nutrients into the soil.

BioBoost is primarily a soil-building fertilizer. It can be used alongside your regular lawn fertilizer program when the lawn needs additional nitrogen, phosphorous, or more aggressive growth.

COMMON QUESTIONS

Frequently Asked Questions

BioBoost is a low-nitrogen, slow-release fertilizer used to add organic material to the soil while providing gentle lawn nutrition. It is especially useful for poor soil, new-construction lawns, and summer applications.

Yes. Its low-nitrogen, mostly slow-release formula makes it a good option during summer heat when you want to feed the soil without pushing excessive lawn growth.

BioBoost has a lower burn risk than fast-release, high-nitrogen fertilizers when applied correctly. Spread it evenly and follow the recommended application rate.

For routine lawn maintenance, apply 5 lbs per 1,000 sq ft. To build organic matter and improve poor soil, apply 10–15 lbs per 1,000 sq ft.

Use 5 lbs per 1,000 sq ft when your lawn mainly needs gentle feeding and ongoing soil maintenance. Use 10–15 lbs per 1,000 sq ft when working with poor soil, low organic matter, or a new-construction lawn with minimal topsoil.

Adding organic material can help improve the soil’s ability to hold nutrients over time, especially in sandy or low-organic-matter soils. Results develop gradually and may require repeated applications.

Yes. New-construction properties often have thin, disturbed, or low-quality topsoil. BioBoost helps add organic material and supports the long-term improvement of those soils.

BioBoost provides gentle, steady feeding rather than a rapid growth surge. It is better suited for building soil health and maintaining color than producing an immediate green-up.

It can be part of a complete lawn program, but it may not provide enough nitrogen or potassium for every seasonal need. Use it as a soil-building treatment alongside other fertilizers when stronger growth or additional nutrients are needed.

Watering after application helps begin moving nutrients into the soil. It can also be applied before a light, steady rainfall. However it is not required.

Product resources

Product Information & Resources

Everything you need to understand, apply, and reference this product.

Details & Specifications

Product details for BioBoost 5-3-0 Organics Lawn Fertilizer
Lawn Types Tall fescue, Bermuda, Zoysia, St. augustine, Centipede, Kentucky bluegrass, Ryegrass
Special FeaturesEnhances Dark Green Color
Application Rate

Routine Lawn Maintenance: Apply 5 lbs per 1,000 sq ft to provide gentle nutrition and maintain soil organic matter. 

Building Soil Organic Matter: Apply 10–15 lbs per 1,000 sq ft when working to improve poor soil, increase nutrient-holding capacity, or rebuild soil around a new-construction home.

  • 18 lb bag at 5 lbs per 1,000 sq ft: Covers approximately 3,600 sq ft
  • 18 lb bag at 10–15 lbs per 1,000 sq ft: Covers approximately 1,200–1,800 sq ft
  • 50 lb bag at 5 lbs per 1,000 sq ft: Covers approximately 10,000 sq ft
  • 50 lb bag at 10–15 lbs per 1,000 sq ft: Covers approximately 3,333–5,000 sq ft

Spread evenly over the lawn with a fertilizer spreader and water after application to begin moving the nutrients into the soil.

BioBoost is primarily a soil-building fertilizer. It can be used alongside your regular lawn fertilizer program when the lawn needs additional nitrogen, phosphorous, or more aggressive growth.

Time to Apply Spring, Summer, Fall, Winter
Waiting Period to Seednone
Delivery SystemGranules
For Use In Turf Grass, Landscape Beds, Vegetable Gardens
BrandLawn Synergy

Spreader Settings

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Documents & Labels

Customer Reviews

Overall rating: 4.894737 / 5 from 19 reviews.

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Review highlights

Reviews

"Fantastic product! Was a Scotts person for years -"

Alex (5/5)

Confused on this product!

"First, I have always had great success with Lawn Synergy products which is why I will continue to order them. This time I ordered Lawn Synergy Micronutrient Booster and was delivered Reed and Perrine Pro Series 5-3-0 Micronutrient. I assumed it was the same product and followed the instructions on the bag which called for a spreader setting of 5-5 1/2. Looking back on the webpage, the directions call for a spreader setting of 9. Did I under use this product or am I good? If I would have set to 9, would I have overused this product and possibly hurt my lawn. Some clarification on the site may prevent customer issues with this."

Rick O. (4/5)

It's looking great I will

"It's looking great I will try it again"

Carol B. (5/5)

I love the product

"Will this organic boost harm my dog"

Edward P. (4/5)

Things are looking up just

"Things are looking up just hope we can get much needed rain to help with the watering process. I like the fertilizer that I have bought so far"

Ron T. (5/5)

products and services

"I have been very impressed wtih the products I have put on the lawn, yielding almost a blue green (Tif 419). Tony has been so helpful with advice and very quick to respond to my questions. I have said you name to a neighbor who cares about your yard and will continue to people I talk with about grass. Thankful to have you!"

Chris E. (5/5)

products and services

"I have been very impressed wtih the products I have put on the lawn, yielding almost a blue green (Tif 419). Tony has been so helpful with advice and very quick to respond to my questions. I have said you name to a neighbor who cares about your yard and will continue to people I talk with about grass. Thankful to have you!"

Chris E. (5/5)

DparNC

"Good product. Lawn looks greener"

Dennis P. (5/5)

Product was applied to

"Product was applied to my lawn this morning."

Christopher (5/5)

Grass seed

"Still having used it, but I’m sure my lawn will look great with it"

Walter D. (5/5)

Q&A

Can the Bio Boost 5-3-0 be used as my main fertilizer year round, or does it need to be in conjunction with Emerald or Almighty? Live in the Northeast and want a low nitrogen fertilizer.
This product is used and recommended as a soil corrective to add organics back into the soil. This should be used in conjunction with regular fertilizers and shouldn't be used year around. I would recommend a soil sample to see if this product is in need at your property.
I currently use Ferti Lome 15-0-15 as my go to fertilizer on my new Palisades Zoysia lawn in North Texas Dallas area, which was new sod in Oct 2024, and has grown in beautifully. I'm interested in this bio fertilizer 5-3-0. Question is, can I substitute the bio fertilizer 5-3-0 instead of using the 15-0-15? It's getting hard to keep up on what fertilizers and months to add and when not to add. Will the 5-3-0 fertilizer be used as my main fertilizer or do I need to use both? Any advice is much appreciated as my thumb isn't green yet.
Bioboost is great for building up the soil with organics. It can be used with a current fertilization program. We would suggest Emerald 10-0-20 at this time of the year on Zoysia unless you need more growth.
I have recently seeded my lawn with North Star grass seed and I used your starter fertilizer along with it. It’s been about 3 weeks and everything is coming in great. I’m wondering when I should apply fertilizer again and what kind do you recommend I use?
Great question. Apply Emerald at 5lbs per 1,000 sqft 6 weeks after applying starter to keep it going.
When is the best time of year to apply this for a tall fescue lawn in Virginia?
Anytime of year is good for this one! Thank you!
Are The Bio Solids used in some of the fertilizer formulas tested for PFAS and other known pollutants prior to packing and distribution? Does Lawn Synergy have standards for these measurements? Can the be made public?
5-3-0 is regulated by the U.S. Environmental Protection Agency and the New Jersey Department of Environmental Protection. 5-3-0 is registered as a fertilizer by the New Jersey Department of Agriculture and is Labeled for turf and ornamental plant use. 5-3-0 is nearly water insoluble so there is less chance of the nutrients leaching into and polluting groundwater sources. This is especially important in Sandy Soils. The release of nutrients is very slow, being broken down through naturally occurring soil microorganisms. Our monitoring presently, is in preliminary studies. As stated previously, the state of New Jersey has not set parameters on PFAS for biosolids fertilizer on land applications.