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Lawn fertilization and treatment specialists in Helena

Diamond J Services
PO Box 50338
No reviews
Diamond J Services
PO Box 50338
No reviews
Free onsite estimate

We are Diamond J Services, based out of Roundup and Billings Montana and we offer quality custom fencing , weed spraying services and snow removal. We provide services in the eastern half of Montana and the western half of North Dakota. The two main cities that we service are Billings, Montana and Williston, North Dakota as well as a large radius around both cities. We have been in business over 26 years and are licensed contractors and insured in both Montana, Wyoming, and North Dakota. We take the no-nonsense approach to all our jobs and we have the knowledge, experience, and equipment to get the job done efficiently. Call us today and we will meet with you and give you a free written estimate on the work that you need completed.

We are Diamond J Services, based out of Roundup and Billings Montana and we offer quality custom fencing , weed spraying services and snow removal. We provide services in the eastern half of Montana and the western half of North Dakota. The two main cities that we service are Billings, Montana and Williston, North Dakota as well as a large radius around both cities. We have been in business over 26 years and are licensed contractors and insured in both Montana, Wyoming, and North Dakota. We take the no-nonsense approach to all our jobs and we have the knowledge, experience, and equipment to get the job done efficiently. Call us today and we will meet with you and give you a free written estimate on the work that you need completed.



Grass Roots Lawn Care
11 Crazy Mountain Rd
No reviews
Grass Roots Lawn Care
11 Crazy Mountain Rd
No reviews
31 years of experience

Grass Roots Lawn Care is a full-service lawn care business. We provide any and all of the following:

Grass Roots Lawn Care is a full-service lawn care business. We provide any and all of the following:


Kelson Services
PO Box 7747
No reviews
Kelson Services
PO Box 7747
No reviews
20 years of experience

Full service commercial and residential lot maintenance company. Small company, attention to detail. Provide prompt billing, with options to receive payment electronically. We accept, cash, check, Mastercard, Visa, American Express.

Full service commercial and residential lot maintenance company. Small company, attention to detail. Provide prompt billing, with options to receive payment electronically. We accept, cash, check, Mastercard, Visa, American Express.


Additional address - PO Box 5314, Helena, MT 59604. Additional email - [email protected]


FAQs for lawn fertilization and treatment projects in Helena, MT

The cost to reseed or overseed a lawn is about $1,050 on average, ranging from $450 to $1,700, depending on lawn size, seed type, and location. Popular seed types for residential lawns include bahia, fescue, and Bermuda. Keep in mind that it costs $0.10 to $0.20 per square foot to seed or overseed a lawn. Additional cost factors may include:

  • Fertilization: $80–$400

  • Soil testing: $700–$2,100

  • Yard cleanup and leaf removal: $200–$560

  • Treating weeds: $110–$325

  • Mowing: $50–$210

On average, the cost of lawn fertilization is $250, ranging from $80 to $400, depending on the size of the lawn, its current condition, additional treatments, number of applications, fertilizer type, and location. Keep in mind that labor, tools, and equipment make up 80% to 90% of the total cost of lawn fertilization. Additional lawn treatment options include:

  • Lime treatment: $100–$150 per 1,000 square feet

  • Crabgrass treatment: $30–$80

  • Grub treatment: $30–$80

  • Mulching: $150–$400

  • Dethatching: $265–$295

The frequency with which you should fertilize your lawn depends on its overall health. Healthy lawns with healthy soil may only need to be fertilized annually. On the other hand, you may need to fertilize lawns with shallow roots, poor soil, or neglected or over-fertilized every six weeks. To determine the best fertilizing schedule for your lawn, consider hiring a professional lawn fertilizing service and consult them about recommended frequency based on your lawn’s health.

Lawn aeration costs between $75 and $350 on average, depending on the size of the lawn, aeration type, slope of the lawn, soil type, lawn prep, and location. Keep in mind that it costs an average of $0.10 to $0.35 per square foot to aerate a lawn that’s less than 1,000 square feet. Different types of lawn aeration include: 

  • Spike aeration: $85

  • Core aeration: $200

  • Liquid aeration: $75

Whether organic or synthetic fertilizers are better for your lawn depends on your goals, budget, and plans for other lawn treatments. Organic fertilizer costs more but is likely to benefit your lawn more in the long run by improving the soil as well as feeding your grass. Synthetic fertilizers get faster results but don’t enrich the soil and may contaminate nearby bodies of water if you live on a shoreline. A hybrid fertilizer may be an option to give you the benefits found in both organic and synthetic fertilizers.

The Helena, MT homeowners’ guide to lawn fertilization and treatments
From average costs to expert advice, get all the answers you need to get your job done.
power seeding machine on large lawn
Jan 18, 2024
Jan 18, 2024
Power seeding is an efficient way to plant new grass in your yard. Find out what power seeding costs by lawn size, type of grass, and other top factors.
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Jan 16, 2025
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Wondering how much fertilizer costs?’ We’ve got you covered, with answers based on the size of your yard, type of fertilizer, and whether you hire a pro.
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Dec 27, 2023
Dec 27, 2023
You may have heard of power seeding as the key to a healthy lawn. But what is power seeding? Learn more about this planting method and whether it’s worth it.
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Feb 20, 2024
Feb 20, 2024
For a lawn that turns neighbors green with envy, your grass seed needs the best chance at survival from the start. Find the best grass type for your yard and region.
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Feb 20, 2024
Feb 20, 2024
Spring is the perfect time to ensure your outdoor space shines all season long. Follow our spring lawn care DIY to get the nicest yard you’ve ever had.
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Feb 13, 2024
Feb 13, 2024
Suffering from spiderwebs in grass all over your yard? It might be something else entirely. Explore four common problems and solutions to various grass fungi.
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