Get back to the good stuff of life, and let us take care of your lawn.

Choose “That Weed Guy” – a LOCAL, FAMILY-OWNED company for your lawn care and see what you’re missing with the “big” guys.


Crystal Lake, IL

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Why Choose Us?

At That Weed Guy we help give your lawn the best chance possible against all that nature throws at it.

  • Personal, friendly service.
  • High quality results.
  • Proactive attention right from the start.
  • Local, family-owned company.
  • Technicians have direct contact with the owner.

A Lawn Care Program Designed for Your Lawn

Whether it's shady, sunny, sloped, or flat, your lawn deserves to be lush and healthy. We can improve the beauty of your lawn with our time-tested Lawn Care programs and Liquid Aeration. We can protect your lawn from pests with our Grub & Insect control. We can even keep your Small Trees and Shrubs looking good with our fall deep root feeding. 

Lawn Fertilization & Weed Control

Balanced fertilization, broadleaf weed control, and crabgrass preventer applied at the most ideal times throughout the season.

Liquid Aeration

Liquid aeration loosens topsoil and encourages deeper rooting to allow for greater oxygenation of the root zone.

Grub & Insect Control

Although you may not see them, in most lawns, grubs are lurking beneath the surface, chewing on the roots of your grass.

Get your free quote

There is absolutely no obligation. It is quick and easy. We only need your address to measure your lawn. Add in your basic contact info so we know who and how to send the quote to. Get the LOCAL, FAMILY-OWNED difference today!

We Proudly Serve the Following Areas in Illinois

Crystal Lake
Prairie Grove
Fox River Grove
Lake in the Hills

Island Lake
Oakwood Hills
Spring Grove

Holiday Hills
McCullom Lake
Bull Valley
Wonder Lake

What Our Customers Are Saying

This company is AMAZING!!! The people are great they explained everything very thoroughly! Prices are SO reasonable! I have told everyone I know about this company my yard was covered in weeds you could not even really see the grass! (I attached a picture to this site) He came and sprayed, and after just the first spray they were all gone!!! I will definitely be using this company for all my lawn care, highly recommend!!!

Bailey B.

Google Review, 5 Stars

Started using their service last year, referred by my neighbor who used them for years. Great customer service, very helpful and my lawn looks great. Thank you!

Ann A.

Google Review, 5 Stars

Awesome customer service and their treatments worked wonders on my lawn. Highly recommend that weed guy for all your lawn care needs!

Megan G.

Google Review, 5 Stars

That Weed Guy came highly recommended. Unfortunately I live outside their current service area. Despite this, the person I spoke with took time to discuss my concern and make suggestions. She was kind, helpful, and did not rush the conversation, even though I was not going to be a "paying customer". That kind of excellent customer service tells me this is a business that cares!

Mila A.

Google Review, 5 Stars