Colorado's Greenest Thumb LLC creates and maintains beautiful outdoor spaces for Castle Rock homeowners with care and local know-how.
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Colorado's Greenest Thumb LLC has been providing professional landscaping services in Castle Rock for over a decade. Rooted in this community, we focus on designing elegant outdoor living areas that increase home value and curb appeal. Whether starting a yard from scratch or enhancing existing spaces, we balance creativity with practical know-how. Our full yard maintenance keeps your landscape looking its best year-round.
Work With Us →Fully licensed and insured for your peace of mind.
We show up when we say we will, every time.
98+ five-star reviews on Google.
Low-impact products that protect your family, pets, and lawn.

Custom plans to create elegant, functional outdoor living spaces from the ground up.

Enhancing and updating existing landscapes to improve beauty and usability.

Installation, repair, and seasonal blowouts to keep irrigation systems running efficiently.







We walk the property with you, listen to what you want, and outline the best approach — completely free.
You receive a detailed, itemized quote within 24 hours. No hidden fees, no surprises.
Our licensed crew arrives on schedule and transforms your yard with precision and care.
We walk you through the finished work and set up maintenance so your yard stays beautiful year-round.
We had an amazing experience working with Colorado’s Greenest Thumb! A few months ago, he transformed our dirt backyard into a beautiful, functional space that our dog, toddler, and the rest of our family can truly enjoy. He laid new grass, installed edging and rock, and even created a small patio area that’s perfect for relaxing outside. He took care of all the HOA paperwork for us, which made the process so easy, and he completed the job on time and exactly as promised. The whole experience was smooth, professional, and stress-free. Our backyard has become one of our favorite parts of the house thanks to his work. We highly recommend Colorado’s Greenest Thumb to anyone looking to turn their yard into a beautiful, family-friendly outdoor space!
I worked with Ben and he was great! He was able to blow out my sprinklers in less than 15 minutes at half the price than other competitors. Very happy in my decision to go with Colorado’s Greenest Thumb and will be calling them again soon!
I’m not one to leave a review however Ben and his team are great! They replaced all our sprinklers, laid mulch and blew out our sprinklers. Fair price and great work.
We had a great experience working with Ben. He gave us a very reasonable estimate, was flexible with scheduling, and provided plans and a contract very quickly. He was also able to answer questions and make changes from our HOA in a timely manner. We're in a new build, so he transformed our rectangle of dirt and weeds into a beautiful lawn with decorative rocks and flowers, plants, and trees that will support and attract pollinators. He communicated any changes or weather delays right away and they were here every morning like clockwork until the job was done. We'll absolutely have them back for sprinkler maintenance and future landscaping improvements.
We had an amazing experience working with Colorado’s Greenest Thumb! A few months ago, he transformed our dirt backyard into a beautiful, functional space that our dog, toddler, and the rest of our family can truly enjoy. He laid new grass, installed edging and rock, and even created a small patio area that’s perfect for relaxing outside. He took care of all the HOA paperwork for us, which made the process so easy, and he completed the job on time and exactly as promised. The whole experience was smooth, professional, and stress-free. Our backyard has become one of our favorite parts of the house thanks to his work. We highly recommend Colorado’s Greenest Thumb to anyone looking to turn their yard into a beautiful, family-friendly outdoor space!
I worked with Ben and he was great! He was able to blow out my sprinklers in less than 15 minutes at half the price than other competitors. Very happy in my decision to go with Colorado’s Greenest Thumb and will be calling them again soon!
I’m not one to leave a review however Ben and his team are great! They replaced all our sprinklers, laid mulch and blew out our sprinklers. Fair price and great work.
We had a great experience working with Ben. He gave us a very reasonable estimate, was flexible with scheduling, and provided plans and a contract very quickly. He was also able to answer questions and make changes from our HOA in a timely manner. We're in a new build, so he transformed our rectangle of dirt and weeds into a beautiful lawn with decorative rocks and flowers, plants, and trees that will support and attract pollinators. He communicated any changes or weather delays right away and they were here every morning like clockwork until the job was done. We'll absolutely have them back for sprinkler maintenance and future landscaping improvements.
We had an amazing experience working with Colorado’s Greenest Thumb! A few months ago, he transformed our dirt backyard into a beautiful, functional space that our dog, toddler, and the rest of our family can truly enjoy. He laid new grass, installed edging and rock, and even created a small patio area that’s perfect for relaxing outside. He took care of all the HOA paperwork for us, which made the process so easy, and he completed the job on time and exactly as promised. The whole experience was smooth, professional, and stress-free. Our backyard has become one of our favorite parts of the house thanks to his work. We highly recommend Colorado’s Greenest Thumb to anyone looking to turn their yard into a beautiful, family-friendly outdoor space!
I worked with Ben and he was great! He was able to blow out my sprinklers in less than 15 minutes at half the price than other competitors. Very happy in my decision to go with Colorado’s Greenest Thumb and will be calling them again soon!
I’m not one to leave a review however Ben and his team are great! They replaced all our sprinklers, laid mulch and blew out our sprinklers. Fair price and great work.
We had a great experience working with Ben. He gave us a very reasonable estimate, was flexible with scheduling, and provided plans and a contract very quickly. He was also able to answer questions and make changes from our HOA in a timely manner. We're in a new build, so he transformed our rectangle of dirt and weeds into a beautiful lawn with decorative rocks and flowers, plants, and trees that will support and attract pollinators. He communicated any changes or weather delays right away and they were here every morning like clockwork until the job was done. We'll absolutely have them back for sprinkler maintenance and future landscaping improvements.
We had an amazing experience working with Colorado’s Greenest Thumb! A few months ago, he transformed our dirt backyard into a beautiful, functional space that our dog, toddler, and the rest of our family can truly enjoy. He laid new grass, installed edging and rock, and even created a small patio area that’s perfect for relaxing outside. He took care of all the HOA paperwork for us, which made the process so easy, and he completed the job on time and exactly as promised. The whole experience was smooth, professional, and stress-free. Our backyard has become one of our favorite parts of the house thanks to his work. We highly recommend Colorado’s Greenest Thumb to anyone looking to turn their yard into a beautiful, family-friendly outdoor space!
I worked with Ben and he was great! He was able to blow out my sprinklers in less than 15 minutes at half the price than other competitors. Very happy in my decision to go with Colorado’s Greenest Thumb and will be calling them again soon!
I’m not one to leave a review however Ben and his team are great! They replaced all our sprinklers, laid mulch and blew out our sprinklers. Fair price and great work.
We had a great experience working with Ben. He gave us a very reasonable estimate, was flexible with scheduling, and provided plans and a contract very quickly. He was also able to answer questions and make changes from our HOA in a timely manner. We're in a new build, so he transformed our rectangle of dirt and weeds into a beautiful lawn with decorative rocks and flowers, plants, and trees that will support and attract pollinators. He communicated any changes or weather delays right away and they were here every morning like clockwork until the job was done. We'll absolutely have them back for sprinkler maintenance and future landscaping improvements.
We had an amazing experience working with Colorado’s Greenest Thumb! A few months ago, he transformed our dirt backyard into a beautiful, functional space that our dog, toddler, and the rest of our family can truly enjoy. He laid new grass, installed edging and rock, and even created a small patio area that’s perfect for relaxing outside. He took care of all the HOA paperwork for us, which made the process so easy, and he completed the job on time and exactly as promised. The whole experience was smooth, professional, and stress-free. Our backyard has become one of our favorite parts of the house thanks to his work. We highly recommend Colorado’s Greenest Thumb to anyone looking to turn their yard into a beautiful, family-friendly outdoor space!
I worked with Ben and he was great! He was able to blow out my sprinklers in less than 15 minutes at half the price than other competitors. Very happy in my decision to go with Colorado’s Greenest Thumb and will be calling them again soon!
I’m not one to leave a review however Ben and his team are great! They replaced all our sprinklers, laid mulch and blew out our sprinklers. Fair price and great work.
We had a great experience working with Ben. He gave us a very reasonable estimate, was flexible with scheduling, and provided plans and a contract very quickly. He was also able to answer questions and make changes from our HOA in a timely manner. We're in a new build, so he transformed our rectangle of dirt and weeds into a beautiful lawn with decorative rocks and flowers, plants, and trees that will support and attract pollinators. He communicated any changes or weather delays right away and they were here every morning like clockwork until the job was done. We'll absolutely have them back for sprinkler maintenance and future landscaping improvements.
We had an amazing experience working with Colorado’s Greenest Thumb! A few months ago, he transformed our dirt backyard into a beautiful, functional space that our dog, toddler, and the rest of our family can truly enjoy. He laid new grass, installed edging and rock, and even created a small patio area that’s perfect for relaxing outside. He took care of all the HOA paperwork for us, which made the process so easy, and he completed the job on time and exactly as promised. The whole experience was smooth, professional, and stress-free. Our backyard has become one of our favorite parts of the house thanks to his work. We highly recommend Colorado’s Greenest Thumb to anyone looking to turn their yard into a beautiful, family-friendly outdoor space!
I worked with Ben and he was great! He was able to blow out my sprinklers in less than 15 minutes at half the price than other competitors. Very happy in my decision to go with Colorado’s Greenest Thumb and will be calling them again soon!
I’m not one to leave a review however Ben and his team are great! They replaced all our sprinklers, laid mulch and blew out our sprinklers. Fair price and great work.
We had a great experience working with Ben. He gave us a very reasonable estimate, was flexible with scheduling, and provided plans and a contract very quickly. He was also able to answer questions and make changes from our HOA in a timely manner. We're in a new build, so he transformed our rectangle of dirt and weeds into a beautiful lawn with decorative rocks and flowers, plants, and trees that will support and attract pollinators. He communicated any changes or weather delays right away and they were here every morning like clockwork until the job was done. We'll absolutely have them back for sprinkler maintenance and future landscaping improvements.
We offer new landscape builds, yard renovations, full landscaping maintenance, sprinkler services, and seasonal cleanups. Contact us today for a free estimate and to discuss your project.
To request a free quote, simply call us, visit our website, or fill out the contact form. We proudly serve Castle Rock and nearby areas and will respond promptly.
With a 4.8-star rating across 98 Google reviews, customers consistently praise our timely work, fair pricing, and the beautiful transformations we deliver.
We primarily serve Castle Rock and surrounding communities including Castle Pines and nearby neighborhoods.
Yes, we offer free estimates and consultations. Schedule yours by calling or contacting us online today.
Get a free landscaping quote for your Castle Rock property — no pressure, no hassle.
Have a project in mind? Fill out the form and we'll get back to you with a custom quote — usually same day.
We'd love to hear about your project.