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  • Average homeowner rating star icon4.1
    Average homeowner rating
  • Verified reviews icon19
    Verified lawn fertilization and treatments reviews

Verified Reviews for Lawn Fertilization And Treatment pros in Portsmouth, NH

*The Angi rating for Lawn Fertilization And Treatment companies in Portsmouth, NH is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Lawn Fertilization And Treatment needs.

*The HomeAdvisor rating for Lawn Fertilization And Treatment companies in Portsmouth, NH is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Lawn Fertilization And Treatment needs.

Last update on December 13, 2025

Find Lawn fertilization and treatment specialists in Portsmouth

Avatar for TruGreen

TruGreen

3.73(
2,161
)
•Approved Pro

TruGreen

3.73(
2,161
)
•Approved Pro
Customers say: True professional
51 years of experience
Free onsite estimate

We believe life is better outside. TruGreen is committed to improving outdoor spaces like your backyard, our shared communities and the environment as a whole. That's why TruGreen, America's #1 lawn care company, has a team of PhD agronomists and certified specialists who work to provide tailored care and bring out your lawn's full potential. We're here to help you and your lawn flourish this season.

"The pro has been servicing our Mclean property quite well for a couple of years. Our lawn looks good and we are satisfied with the service. The customer service is sometimes underwhelming but it gets the job done at a reasonable cost which is really becoming harder by the day to get."

Alejandro S on May 2025

We believe life is better outside. TruGreen is committed to improving outdoor spaces like your backyard, our shared communities and the environment as a whole. That's why TruGreen, America's #1 lawn care company, has a team of PhD agronomists and certified specialists who work to provide tailored care and bring out your lawn's full potential. We're here to help you and your lawn flourish this season.

"The pro has been servicing our Mclean property quite well for a couple of years. Our lawn looks good and we are satisfied with the service. The customer service is sometimes underwhelming but it gets the job done at a reasonable cost which is really becoming harder by the day to get."

Alejandro S on May 2025

Avatar for SavATree Middleton

SavATree Middleton

4.68(
152
)

SavATree Middleton

4.68(
152
)
Customers say: Super punctual
40 years of experience

The Middleton office of SavATree is a premier provider of Essex county tree services and lawn care. Our team of arborists, horticulturists and lawn care professionals specialize in the area's specific tree, shrub and turf conditions. Northern Mass is steeped in tradition- including a longstanding commitment to beautifying private landscaping as well as many community properties. The North Shore area of MA is home to many gardening enthusiasts and we are proud to have many of these passionate people as our customers. Additional service areas: Chelmsford-Haverhill, Boxford-Gloucester, Manchester-Nashua areas. Additional email: [email protected] & [email protected].

"Company was knowledgable about lawn and issues that arose. First hired them last fall for a nut sedge issue and to aerate and overseed lawn. Nut sedge treatment worked at the time but came back with a vengeance this summer, more on that later. The aeration and overseeding was not so good. Noticed little to no plugs on the lawn and the sections that were bare are still bare. This summer, more specifically in mid July I noticed brown patches and the nut sedge returning. I notified them and after a week or so they came out to diagnose dollar spot disease and nut sedge. It took 4 weeks from my original email telling them about the problem for them to schedule someone to come treat it. Sometimes I would get a response within a day, other times would take a week. Just not consistent. And at $140 a whack per fertilization treatment I expected my lawn to look nice. The parts that were not covered with sedge or dollar spot didn’t look so great, not exactly thick or as green as some neighbors and still had some clover and crabgrass in some areas - and I followed their watering suggestion. The $140 a whack didn’t include the two dollar spot treatments and 2-3 nut sedge treatments. So for over $1500 for the year and the spotty response time I felt it wasn’t worth it."

Matthew S on August 2019

The Middleton office of SavATree is a premier provider of Essex county tree services and lawn care. Our team of arborists, horticulturists and lawn care professionals specialize in the area's specific tree, shrub and turf conditions. Northern Mass is steeped in tradition- including a longstanding commitment to beautifying private landscaping as well as many community properties. The North Shore area of MA is home to many gardening enthusiasts and we are proud to have many of these passionate people as our customers. Additional service areas: Chelmsford-Haverhill, Boxford-Gloucester, Manchester-Nashua areas. Additional email: [email protected] & [email protected].

"Company was knowledgable about lawn and issues that arose. First hired them last fall for a nut sedge issue and to aerate and overseed lawn. Nut sedge treatment worked at the time but came back with a vengeance this summer, more on that later. The aeration and overseeding was not so good. Noticed little to no plugs on the lawn and the sections that were bare are still bare. This summer, more specifically in mid July I noticed brown patches and the nut sedge returning. I notified them and after a week or so they came out to diagnose dollar spot disease and nut sedge. It took 4 weeks from my original email telling them about the problem for them to schedule someone to come treat it. Sometimes I would get a response within a day, other times would take a week. Just not consistent. And at $140 a whack per fertilization treatment I expected my lawn to look nice. The parts that were not covered with sedge or dollar spot didn’t look so great, not exactly thick or as green as some neighbors and still had some clover and crabgrass in some areas - and I followed their watering suggestion. The $140 a whack didn’t include the two dollar spot treatments and 2-3 nut sedge treatments. So for over $1500 for the year and the spotty response time I felt it wasn’t worth it."

Matthew S on August 2019

Avatar for Lawn Dawg - Litchfield

Lawn Dawg - Litchfield

4.48(
98
)

Lawn Dawg - Litchfield

4.48(
98
)
Customers say: Super punctual
28 years of experience

Lawn Dawg is a premiere, residential lawn care and pest control company providing services throughout New England & New York. Our Signature Lawn Care Program features custom blends of phosphate-free fertilizers with slow-release technology. This custom blend produces a beautiful, lush, green lawn. In addition to our Signature Lawn Care Program, we also offer a number of unique Lawn Enhancement Services. The Lawn Dawg Pest Control Program and All-Natural Mosquito & Tick control are designed to keep unwanted insects out of your home and protect you and your family. For a free estimate, contact us today at 603-429-4634 or visit our website at www.lawndawg.com.

"Excellent, very prompt and professional. Hopefully the acquisition by TruGreen will not impact the level of service."

Nandakumar V on January 2018

Lawn Dawg is a premiere, residential lawn care and pest control company providing services throughout New England & New York. Our Signature Lawn Care Program features custom blends of phosphate-free fertilizers with slow-release technology. This custom blend produces a beautiful, lush, green lawn. In addition to our Signature Lawn Care Program, we also offer a number of unique Lawn Enhancement Services. The Lawn Dawg Pest Control Program and All-Natural Mosquito & Tick control are designed to keep unwanted insects out of your home and protect you and your family. For a free estimate, contact us today at 603-429-4634 or visit our website at www.lawndawg.com.

"Excellent, very prompt and professional. Hopefully the acquisition by TruGreen will not impact the level of service."

Nandakumar V on January 2018

Avatar for Simply Safer Premium Lawn Care, Inc

Simply Safer Premium Lawn Care, Inc

4.59(
121
)

Simply Safer Premium Lawn Care, Inc

4.59(
121
)
Customers say: Super punctual
25 years of experience

Our mission at Simply Safer Premium Lawn Care is to provide our customers the ability to enjoy all of the benefits of a nice green healthy lawn AND to provide this without jeopardizing your families health or the health of our local environment. We take a great deal of pride in the quality of the results that we provide. We also pride ourselves in being very competitively priced as you'll see when you call. We offer two different lawn care programs so that we can provide exactly what you're looking for. Our Organic-Based Lawn Program provides beautiful green turf and optimal control of weeds & insects while reducing pesticide use by 90%. Our Fully Organic Program provides excellent results and uses no chemicals at all for the safest lawn possible. To compliment these programs we also offer a full line of seeding and lawn renovation services along with Organic Mosquito & Tick Control and Tree & Shrub Care. We consistently provide the best results and service because of who we are. We aren't a franchise or a giant corporation, we're a local company. We live locally, we buy most of our products from local manufactures supporting New England jobs, our 17 trucks are all American made, and our employees are all on salary and we treat them as part of our family.

"This is a great company- employees and supervisors are honest, hard working and make sure that they do the job above and beyond what they have to do. My lawn looks great now. Highly recommend them "

Elizabeth G on September 2025

Our mission at Simply Safer Premium Lawn Care is to provide our customers the ability to enjoy all of the benefits of a nice green healthy lawn AND to provide this without jeopardizing your families health or the health of our local environment. We take a great deal of pride in the quality of the results that we provide. We also pride ourselves in being very competitively priced as you'll see when you call. We offer two different lawn care programs so that we can provide exactly what you're looking for. Our Organic-Based Lawn Program provides beautiful green turf and optimal control of weeds & insects while reducing pesticide use by 90%. Our Fully Organic Program provides excellent results and uses no chemicals at all for the safest lawn possible. To compliment these programs we also offer a full line of seeding and lawn renovation services along with Organic Mosquito & Tick Control and Tree & Shrub Care. We consistently provide the best results and service because of who we are. We aren't a franchise or a giant corporation, we're a local company. We live locally, we buy most of our products from local manufactures supporting New England jobs, our 17 trucks are all American made, and our employees are all on salary and we treat them as part of our family.

"This is a great company- employees and supervisors are honest, hard working and make sure that they do the job above and beyond what they have to do. My lawn looks great now. Highly recommend them "

Elizabeth G on September 2025

Avatar for Rotten Rock Hardscaping & Tree Service Inc.

Rotten Rock Hardscaping & Tree Service Inc.

5.00(
21
)

Rotten Rock Hardscaping & Tree Service Inc.

5.00(
21
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Offering Logging and Tree Services by Certified Professional Loggers and ISA Certified Arborists. Technical Tree Removals, Limbing, Pruning, Climbing, Crane Service, Cabling and Bracing and Tree Risk Assessments. Plant Health Care Services - Tree Rx Health Care Program, Fertilizations and Treatments for a range of pests from Gypsy Moths to Emerald Ash Borer Beetles. Licensed in the State of New Hampshire and Maine for Treatments.

Offering Logging and Tree Services by Certified Professional Loggers and ISA Certified Arborists. Technical Tree Removals, Limbing, Pruning, Climbing, Crane Service, Cabling and Bracing and Tree Risk Assessments. Plant Health Care Services - Tree Rx Health Care Program, Fertilizations and Treatments for a range of pests from Gypsy Moths to Emerald Ash Borer Beetles. Licensed in the State of New Hampshire and Maine for Treatments.

Avatar for Olofson Landworks LLC

Olofson Landworks LLC

5.00(
10
)

Olofson Landworks LLC

5.00(
10
)
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Additional address - PO Box 479, Hampton Falls, NH 03844. Olofson Landworks LLC is a family owned and operated business. Troy Olofson started the company in 1993, building on prior experience with landscaping companies including Rockcrest Gardens. All of Olofson Landworks' key personnel have been involved with the operation of the company since its inception and are highly experienced and skilled in all aspects of landscaping & maintenance work.

"Great. They provided some great design ideas on how to handle the area around the mailbox and the results were great. I would hire them again anytime."

Steve Q on June 2018

Additional address - PO Box 479, Hampton Falls, NH 03844. Olofson Landworks LLC is a family owned and operated business. Troy Olofson started the company in 1993, building on prior experience with landscaping companies including Rockcrest Gardens. All of Olofson Landworks' key personnel have been involved with the operation of the company since its inception and are highly experienced and skilled in all aspects of landscaping & maintenance work.

"Great. They provided some great design ideas on how to handle the area around the mailbox and the results were great. I would hire them again anytime."

Steve Q on June 2018

Groundhog Landscaping, Inc.

4.50(
28
)

Groundhog Landscaping, Inc.

4.50(
28
)
Customers say: Quick response

Established in Londonderry New Hampshire over 20 years ago, Groundhog Landscaping Inc., has grown to become one of the largest full-service landscape companies in southern New Hampshire. We believe our consistent growth and success is because we offer competitive pricing, we know our costs, and we deliver value.

"I hired Groundhog Landscaping for general weed and feed service for my lawn. Their machine leaked gasoline all over my lawn. They came out to “fix” my lawn and made a repair. Meanwhile they are sending me a bill for the service they performed. I told them I would not pay it until the lawn was fixed. 10 weeks after they have not fixed my lawn and it is a complete mess. Please see the pictures"

Katie G on July 2021

Established in Londonderry New Hampshire over 20 years ago, Groundhog Landscaping Inc., has grown to become one of the largest full-service landscape companies in southern New Hampshire. We believe our consistent growth and success is because we offer competitive pricing, we know our costs, and we deliver value.

"I hired Groundhog Landscaping for general weed and feed service for my lawn. Their machine leaked gasoline all over my lawn. They came out to “fix” my lawn and made a repair. Meanwhile they are sending me a bill for the service they performed. I told them I would not pay it until the lawn was fixed. 10 weeks after they have not fixed my lawn and it is a complete mess. Please see the pictures"

Katie G on July 2021

Avatar for Jungle Jim's

Jungle Jim's

4.52(
21
)

Jungle Jim's

4.52(
21
)
Customers say: Quality work
29 years of experience

Jungle Jim's was founded in 1996, servicing central & southern New Hampshire. We are fully insured and family owned and operated. We offer commercial snow plowing, landscaping, yard excavation, tree removal, irrigation installation and maintenance, septic installs & repairs, and maintenance for both commercial & residential. Additional email - [email protected].

Jungle Jim's was founded in 1996, servicing central & southern New Hampshire. We are fully insured and family owned and operated. We offer commercial snow plowing, landscaping, yard excavation, tree removal, irrigation installation and maintenance, septic installs & repairs, and maintenance for both commercial & residential. Additional email - [email protected].

Showing 1-10 of 46
Lawn Fertilization and Treatment questions, answered by experts

Implement overseeding and fertilization to maximize aeration benefits and strengthen your lawn.

One of the best ways to save money on lawn care is to sign up for an annual contract for ongoing service rather than paying for one-off or as-needed services. If you guarantee a landscaping company ongoing work, they’re more likely to give you a break on the cost. Plus, ongoing services will keep your property in tip-top shape and help avoid the high cost of playing catch up on an overgrown lawn. You can also save money by sticking to the basics and foregoing add-on services like weeding and pest treatments.

Whether or not grass will fill in bare spots itself depends on the type of grass you have. For example, grass with rhizomes (e.g., Bermuda grass) and stolons (e.g., Saint Augustine grass) will naturally fill in bald spots as it spreads laterally. However, clump-forming grasses will not spread. 

In the fall, you should aerate the soil, overseed the bare spots, kill weeds, mow the lawn low, and rake your leaves. By boosting your lawn’s health in the fall, your grass will be stronger throughout the winter and come back healthier in the spring. You should also trim your perennials so that they withstand the winter and are ready for new growth in the spring. 

Mowing is one of the most important ways to maintain your lawn because it encourages grass to grow horizontally, creating a fuller, more uniform yard. On top of mowing your lawn, you’ll want to routinely fertilize your lawn, water it regularly, and take care of pests the moment they arise. 

The Portsmouth, NH homeowners’ guide to lawn fertilization and treatments

From average costs to expert advice, get all the answers you need to get your job done.

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