(403) 990-0885

greenguardlawn@gmail.com

Green Guard
Lawn Fertilization & Weed Control Calgary

Enjoy a Healthy, Weed-Free Lawn All Season Long With A Local Calgary Company—Serving For Over 10 Years

woman and dog enjoy weed free lawn
beautiful lawn after fertilizer and weed control applications
lawn chairs on fertilized grass with no weeds
calgary man mowing the lawn for lawncare maintenance
calgary lawn fertilization and weed control example yard
boy eats watermelon on lawn
calgary house with weed control and lawn fertilizer treatment
weed control allows calgary family to enjoy their lawn
bubbles float across green grass after lawn fertilizer applications
family enjoys green fertilized grass with weed control treatment
picnic basket on green weed-free lawn
nice lawn for yoga after weed control and fertilization

Every Visit Is Photo-Verified!

We Send You Pictures of Your Lawn Being Treated

lawn sign from green guard lawn fertilization and weed control

About Green Guard Lawn

Green Guard Lawn Fertilization & Weed Control is proudly owned by Brian Swain, a lawn care expert with more than 10 years of hands-on experience here in Calgary. Brian started Green Guard because he noticed something was missing: many lawn companies were rushing through jobs without really caring about the details or the clients.

Green Guard does things differently. We value clear communication, respect for your time, and delivering results that make a real difference. Our goal isn’t to become Calgary’s biggest lawn company—we strive to become your trusted partner in maintaining a lush, healthy lawn.

spraying weeds for weed control

Every Visit Is Photo-Verified!

We Send You Pictures of Your Lawn Being Treated

At Green Guard, trust is at the core of everything we do. When you invite us onto your property, you count on us to take care of your lawn—and we take that responsibility seriously.

That’s why, during every visit, we send you photo proof of your lawn being treated, even if you’re not home. You’ll never have to wonder if or when we showed up. Instead, you’ll clearly see the treatments being done and know what treatments your lawn has received.

These verification photos give you peace of mind and keep you informed about your lawn’s progress through the season. You get a visual timeline that shows your lawn’s improvement from month to month, so you can feel confident about your investment. Because we take the extra time for this step, you can always trust your lawn is receiving the careful, thorough service it deserves.

difference between lawns with and without weed control services in calgary
applying weed control treatment to calgary lawn
applying fertilization treatment to calgary lawn
contrast between lawns with and without weed control and fertilization
calgary weed control services are applied to grass
calgary fertilizer services applied to grass

Why Choose Green Guard Lawn?

  • Local Knowledge That Counts: With 10+ years caring for Calgary lawns, we know exactly what works in our unique climate.
  • Honest, Clear Communication: We don’t use confusing terms or complicated explanations. You always know exactly what service you’re getting and why.
  • Attention to Detail: Instead of rushing through your lawn like the bigger companies, we take the time to do the job right. That means better results and fewer callbacks.

Photo Verification Every Visit: Unlike other companies, you’ll see what we’ve done, even if you’re not home, making sure you get what you pay for.

lawn sign from green guard lawn fertilization and weed control
Green Guard Lawn Fertilization & Weed Control | Calgary, Alberta

Our Lawn Services

Keeping Calgary Lawns Green, Healthy, and Weed-Free

Green Guard’s lawn services are built specifically for Calgary’s tough growing conditions. From invasive weeds and compacted soil to unpredictable weather, each of our specialized treatments directly addresses real challenges local homeowners face. No fluff—just reliable solutions and noticeable results.

Weed Control

Weeds don’t just look bad—they steal water, nutrients, and space from your grass. Green Guard’s treatments quickly eliminate stubborn weeds like dandelions and chickweed, giving your lawn room to grow thicker and healthier. Our seasonal packages include unlimited weed control.  Additionally, Calgary’s city bylaws require homeowners to manage invasive weeds. Green Guard proactively helps you stay compliant, giving you peace of mind and a beautiful, weed-free lawn all season.

Overseeding

Overseeding applies fresh grass seed directly onto your lawn, filling patchy areas and boosting grass density. Green Guard strategically includes overseeding in our lawn care packages because it naturally helps grass resist weeds, disease, and Calgary’s harsh weather. By applying high-quality seed at optimal times, your lawn becomes thicker, greener, and more resilient. Overseeding is one of the most effective ways to rejuvenate your grass, giving you a visibly healthier lawn year-round.

 

Mosquito and Tick Control

Mosquitoes don’t just ruin your outdoor fun—they also pose potential health risks. Green Guard applies an effective, all-organic repellent to mosquito and tick-prone areas on your property. Regular applications significantly reduce pest populations, so you can comfortably enjoy your yard without worrying about bites or  insect borne diseases (Zika, Lyme disease, and West Nile virus). Our natural mosquito control treatments are safe for kids, pets, and your landscape, giving you a worry-free outdoor experience.

 

Fertilization

Fertilization is essential for maintaining a healthy, vibrant lawn in Calgary’s challenging climate. Green Guard applies specialized fertilizers tailored to your lawn’s specific seasonal needs, promoting deeper roots, thicker growth, and improved drought resistance. Unlike generic treatments, our combination of slow-release and fast-acting fertilizers provides steady nourishment throughout the entire season, making your grass healthier, greener, and stronger.

 

Liquid Aeration

Traditional mechanical aeration risks damaging sprinkler systems and can unintentionally transfer pests like chinch bugs between properties. That’s why Green Guard uses liquid aeration, an innovative and safer approach that loosens compacted soil without heavy equipment. Liquid aeration increases oxygen, water, and nutrient penetration deep into the root zone, creating stronger, more resilient grass. There’s no need to mark sprinkler heads, and it allows us to thoroughly treat even small or hard-to-reach yards, providing superior results without risks or hassle.

Super Biostimulant

Calgary lawns often struggle with extreme weather conditions, from droughts to rapid temperature shifts. Green Guard’s Super Biostimulant treatment helps grass efficiently absorb water and essential nutrients even under stressful conditions. Think of it as a revitalizing boost—it opens the pores of your grass blades, allowing them to take in nourishment more effectively. Packed with micronutrients, this unique treatment promotes sustained healthy growth, resulting in visibly greener, stronger, and more vibrant grass all season.

Testimonials

What do our customers think?

This was my first year using Green Guard and I must say a very pleasant experience.They always kept in touch the day before my scheduled appointment and other than due to rain they always showed up as scheduled. They always take a photo when they are there and send it to you when complete,top notch service! I would highly recommend Brian and his staff to get your lawn looking great again!
I have used Green Guard for the last two years and will continue to use them in the future. My lawns which used to look tired and had more weeds than grass, are now lush and green and weed-free. Excellent service at a competitive price.
Green Guard is my go-to lawn care professionals..........they are courteous, communicative, on-time and responsive.I've tried the other lawn companies and Green Guard beats them all!!My lawn is always emerald green and totally weed free. I live on a main thoroughfare, with many neighbors strolling by stop to comment on my lawn........ Green Guard, is, and always will be, "my lawn guy"!!
We are really appreciate Brian and his team hard work. Our yard never looked better, we were fitting with the weed over couple of years we couldn't get rid of it. Brian and his team fixed in no time. I would recommend Green Guard for everyone. Thanks again.
Best service, Brian is taking care of my lawn for last 3 years and is very well kept. All thanks to him and his team.
We’ve only used Green Guard lawn services for a year and already we’ve seen great results! Brian and his team are knowledgeable and friendly. We would definitely recommend them!
Our lawn has never looked better! Brian and the team at Green Guard have done a fantastic job with the grass and are a pleasure to deal with. Highly recommend using their services!
We've used Brian for many years and our lawn is better than ever. He saves us so much time and prevents a couple nasty weeds from taking over!
We have used Green Guard for a number of years now. We’ve always been very happy with their service and communication is great! Love supporting those local business and our lawn has never looked better!
I'm really pleased with Green Guard. I had lots of weeds in the lawn last year so decided I needed to get some professional help. This year, my lawn is thick and green despite water restrictions, and very few weeds (if any). I love that the company reminds you a few days ahead when they are coming with any instructions. They are really responsive to emails and I couldn't be happier! Highly recommend. And, I am getting compliments on the lawn so others are noticing!
Brian and his team were awesome , they let me know when to expect them, and emailed if there were any changes. My lawn looks great! Can't wait to get service again this year!
Green Guard is a terrific company who is diligent in working with property owners to keep their lawns healthy and looking beautiful. I like to support locally owned companies and they are great at communicating with their customers. I always enjoy touching base with their 'front-end' staff at the beginning of the spring & summer season.
Green Guard has been amazing to work with! I used them for weed and fertilization on my lawn and all spring and summer I didn't have any pesty weeds and my grass was very lush and green.They were also very communicative, always on time and met their schedules.I will be using their services next year!
This is our first year working with Green Guard Lawn and we’re very happy with their service! They brought our front yard back to life, our yard was full of weed with almost no grass and they did an amazing job getting rid of the weed and giving us some advice on how to keep a healthy yard. In addition to this, Green Guard Lawn has one of the best prices in Calgary!!
2023 was our first year using Green Guard for a lawn service and we are thrilled with the results. Our lawn is looking the best it has in years with the weeds reduced it is growing in thicker and stronger than ever. I love that they tell us exactly when they are coming and send us a picture once they are here confirming their visit and service.We will for sure continue using them and are super thrilled to be supporting a small local company.
Are you looking for a local family owned and loved lawn care company that cares about you and your lawn? Look no further. Brian and team are so friendly, thorough, informative, responsive, professional and deliver what they promise. I wish I had before and after photos of our yard that went from gross to lush in one summer! They showed up when scheduled and if the schedules changed due to weather, you knew immediately. There was no guess work. We are already signed up for next season. 5 stars all the way!
I am quite pleased with the fertilization services provided by Green Guard. Prior to hiring Green Guard, I had several weeds and uneven growth of grass in my lawn. I noticed significant improvement with balanced growth of grass and reduced weeds soon after Brian completed the first couple of fertilizer and weed control applications. Brian was proactive and prompt in his communication and schedule and provided a follow up text message with a picture of the lawn after each application. I highly recommend Green Guard for lawn maintenance and improvement.
Green Guard is a great company, I have been working with them for a couple of years, great on time service and fair pricing. My yard has loved the services of Green Guard and looked lush green throughout the summer.I would recommend this company without any hesitation.All the best Brian, would love to use your services next year.
Green Guard Lawn is an excellent company. You always receive a detailed email from Brian Swain letting you know what to expect, etc. He is also very quick to get back to you with answers should you have any questions. Receiving a text and a photograph of the work being done is a bonus, and greatly appreciated. I would definitely recommend Green Guard for their Professionalism, good value and great quality work. Thank you for providing an incredible service!
This was my second year with Green Guard and I had absolutelyno hesitation in booking them again for next year! I am in a townhouse complex where we have a company who comes to cut our grass -- of course this means that their machines often transfer weeds etc from other areas, but with Green Guard I enjoyed a dandelion-free summer! With the water restrictions this summer, I didn't water my lawn at all -- and I still had lush green grass. If you are looking for great lawn care, this is the best company around!
Green Guard Lawn has provided excellent fertilization services to us for the last three years, and I am thrilled with the results. My lawn is lush, green, and free of weeds. The team is courteous and responsible, and fosters a friendly and confident customer relationship. They tailor their treatments to my lawn's needs, and their deep knowledge and expertise are remarkable. I never worry about missing a treatment, thanks to their consistent schedule. I highly recommend this company if you want a green, weed-free lawn.
Green Guard Lawn is a terrific company to deal with. We've been dealing with them for I believe 4-5 years now and we can proudly say we have the best lawn on our street, maybe community. Green and lush. Our neighbors started using their services because our lawn shows itself the results. Great guys to deal with and happy to be a customer of theirs.
Brian and his team do a great job and have been looking after my lawn for the past couple years. From their advanced notice advising when they will be coming to the pictures taken after the service is complete. The service is excellent and with a competitive price Green Guard will continue to be involved at my acreage to control the dandelions and provide the proper treatments to my lawn at the proper concentrations. Highly recommend!
We would highly recommend this service. The service was high quality at a reasonable cost. There were parts of our lawn that I thought we would have to replace due to stubborn weeds and poor growth. Brian restored our lawn to an almost new condition and we are very happy with what we see.
We have been in this home for 15 years and the previous two summers have been very tough on our lawns. We decided to use Green Guard this year in hopes they could rejuvenate our grass and help with all the weeds! We are very pleased with their service. Our grass has never looked this nice. We also like that if you are not home when they do their service they will text you pictures/video of their applications. We have already told them we would like their service again next year.
This was my first year using Green Guard and I must say a very pleasant experience.They always kept in touch the day before my scheduled appointment and other than due to rain they always showed up as scheduled. They always take a photo when they are there and send it to you when complete,top notch service! I would highly recommend Brian and his staff to get your lawn looking great again!
I have used Green Guard for the last two years and will continue to use them in the future. My lawns which used to look tired and had more weeds than grass, are now lush and green and weed-free. Excellent service at a competitive price.
Green Guard is my go-to lawn care professionals..........they are courteous, communicative, on-time and responsive.I've tried the other lawn companies and Green Guard beats them all!!My lawn is always emerald green and totally weed free. I live on a main thoroughfare, with many neighbors strolling by stop to comment on my lawn........ Green Guard, is, and always will be, "my lawn guy"!!
We are really appreciate Brian and his team hard work. Our yard never looked better, we were fitting with the weed over couple of years we couldn't get rid of it. Brian and his team fixed in no time. I would recommend Green Guard for everyone. Thanks again.
Best service, Brian is taking care of my lawn for last 3 years and is very well kept. All thanks to him and his team.
We’ve only used Green Guard lawn services for a year and already we’ve seen great results! Brian and his team are knowledgeable and friendly. We would definitely recommend them!
js_loader

Lawn Fertilization Packages

Something for Everyone & Every Lawn in Calgary!

The Treatment Your Lawn Needs

Our lawn care packages are priced based on lawns up to 3,000 sq ft—perfect for most yards across Calgary’s neighbourhoods. If your lawn is larger, we’ll provide a custom quote that matches your specific needs. If your lawn is smaller (under 800 sq ft), you’ll also receive a small-sized lawn price adjustment, ensuring you always pay a fair price tailored to your lawn size.

Bronze

Green & Weed Free!

— grass areas only —

Season Long Package

$287

+GST

  • Verified Service
  • 3 Fertilizer Treatments
  • 2 Weed Control Treatments
  • 2 Iron Supplements for Turf Health
  • 2 Super Biostimulant Treatment (sea kelp, humic, and more)
  • Unlimited Weed Control

 

Silver

Thicker & Healthier!

Season Long Package

$410

+GST

  • Verified Service
  • 5 Fertilizer Treatments
  • 2 Weed Control Treatments
  • 2 Iron Supplements for Turf Health
  • 2 Super Biostimulant Treatment (sea kelp, humic, and more)
  • Liquid Aeration
  • Unlimited Weed Control
  • FREE Vegetation Control on Hardscaped Areas

Gold

Nicest Lawn On The Block!

Season Long Package 

$510

+GST

  • Verified Service
  • 6 Fertilizer Treatments
  • 3 Weed Control Treatments
  • 3 Iron Supplements for Turf Health
  • 3 Super Biostimulant Treatments (sea kelp, humic, and more)
  • Overseeding
  • Liquid Aeration
  • Unlimited Weed Control
  • FREE Vegetation Control on Hardscaped Areas

Custom Quotes

 

Contact Us

Custom quotes are perfect when standard packages don’t quite match your lawn care needs:

  • Acreages that need special treatment schedules.

  • Front-yard-only treatments for homes that keep backyards untreated.

  • Single treatments for a quick lawn refresh.

  • Problem lawns, when you’re not sure exactly what’s needed.

Tell us about your lawn’s unique situation, and we’ll build a customized, photo-verified plan designed specifically to bring out your lawn’s best.

Courtesy Calls or Unlimited Weed Control  (for packages only):

If you have concerns about the weed control treatment please let us know. As we all know the weather in Alberta is unpredictable and despite our careful planning Mother Nature has her own ideas. If your lawn receives heavy rainfall within a few hours of its application please let us know and we are happy to come back.

We do not charge for extra weed control treatments in our packages that list “unlimited weed control”.

Our Other LAWN services

Our Latest Lawn Care Services

New Services for Even Healthier Lawns Across Calgary

Power Raking (Dethatching)

Power raking removes the buildup of dead grass (“thatch”), helping your lawn absorb nutrients better and reducing the risk of chinch bugs. It’s especially beneficial after Calgary’s long winters when lawns struggle to bounce back.

Drought Treatment

Our drought treatment improves your soil’s ability to absorb and retain water, maximizing the effectiveness of every drop—critical during Calgary’s hot, dry stretches and potential watering restrictions. Your lawn stays greener with less watering effort, giving it a better chance to thrive even in challenging conditions.

Lawn Restoration Assessments

If your lawn has seen better days and needs more than our standard packages provide, we’ll personally visit your property to evaluate exactly what’s needed. We’ll give you straightforward advice about the treatments required. There is an assessment fee, but when you move forward with our recommendations, we’ll apply that directly to your service.

Customized Lawn Care Solutions

Sometimes your lawn needs something extra—whether it’s managing tough pests like chinch bugs or mosquitoes, treating ants or spiders, or addressing hard-to-control weeds on driveways and pathways. Green Guard’s specialty treatments are designed to address those unique Calgary lawn challenges clearly and effectively, keeping your property healthy from edge to edge.

Other Lawn Care Services

We offer a range of add-on  services to support  our customers with an easy, worry-free experience for even more of their lawncare needs. These services can be customized to your specific needs.

Power Rake

 

starting from:

$140

+GST

  • Chinch Bug Deterrant

 

Liquid
Or
Deep core mechanical Aeration

starting from

$ 70

+GST

quoted per situation

Chinch Bug Treatments

 

starting from

$319

+GST

  • 2 Treatments

Mosquito & Tick Control

No More Mosquitoes or Ticks here!

If combined with a lawn package

$287

+GST

  • Verified Service
  • 5 Treatments of Organic Repellent of Mosquitoes & Ticks

Other Fertilization & Weed Control Services:

Lawn Restorations

 

ask for a quote

 

Drought Treatment

reduces the amount watering needed

starting from:

$ 65

+GST

Other Insects

Ants – Spiders – Box Elder bugs

ask for a quote

 

Irrigation Blowouts

 

starting from

$ 55

+GST

Chinch Bug Control

Ant Control

Pathway & Crack Treatments

Prohibited Plant Control

Green Guard Lawn Fertilization & Weed Control FAQ

How quickly will weeds disappear after treatment?

After your weed control treatment, weeds typically start wilting within a few days within 7–14 days. You’ll notice gradual results rather than instant removal because the weeds need time to naturally break down.

Is weed control safe for kids and pets?

Yes, our weed control treatments are safe once dry, usually about two hours after application. As an extra precaution, we always send you photo verification with a timestamp, so you’ll know exactly when the treatment happened and when it’s safe to enjoy your lawn again.

How often do you treat my lawn during the season?

Treatment frequency depends on your chosen package. Typically, we treat your lawn every 4–6 weeks throughout Calgary’s growing season to keep your grass consistently healthy, weed-free, and looking its best.

Why does my lawn need fertilizer treatments?

Calgary’s rapidly changing weather—from dry, sunny periods to sudden cold snaps—puts extra stress on lawns. Fertilizer treatments provide vital nutrients to strengthen your lawn’s root system, keeping your grass thick, healthy, and green even through Calgary’s temperature swings.

Why do you use liquid aeration instead of traditional aeration?

We switched to liquid aeration because it eliminates pest transfer, protects sprinkler heads, and allows us access to tight spaces and smaller yards. As always, each liquid aeration treatment is verified with photo proof, ensuring you see exactly what we’ve done for your lawn. We are fans of Liquid Aeration but was also offer Deep Core Mechanical Aeration if that is your preference.

When is the best time to overseed my lawn?

The ideal time for overseeding in Calgary is spring or early fall. Overseeding helps fill in bare patches and thickens your lawn, making it stronger and more resilient against weeds and diseases.

How do your mosquito control treatments work?

We use an all-organic mosquito repellent that’s safe and effective.Insert Regular applications throughout the season target mosquito breeding areas, allowing you to comfortably enjoy your yard without those pesky interruptions.

Do I need to be home during treatments?

Nope, you don’t need to be home during your treatment. To keep you informed, we’ll email you a verified photo each time we visit, showing exactly what we’ve done. This transparency means you’ll always know your lawn has been treated properly, even if you’re away or at work.

Can I get a custom lawn care or weed control package?

We’re always ready to design a package that matches your exact lawn care needs. Owner Brian Swain personally ensures each customized solution addresses your specific lawn concerns, whether it’s front-yard-only care, acreage management, or other unique lawn situations.

What if the weather interrupts my scheduled treatment?

Calgary’s weather can change suddenly—whether it’s unexpected rain, hail, or even snow. If weather interrupts your treatment, simply let us know, and we’ll promptly return at no extra cost. Your lawn’s health is our priority, and we never let unpredictable weather get in the way.

Contact Us

We can’t wait to hear from you!

Buy Local Buy Canadian

Serving Properties in Calgary

Contact Us

Leave a message for us and we will get in touch as soon as we can!

"*" indicates required fields

Address
Full Name*
This field is for validation purposes and should be left unchanged.

healthy lawn with fertilizer and weed control package
application of weed control and lawn fertilizer in calgary