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Putting the Color in Colorado!

2 Garden Centers In The Denver-Metro Area

O'Toole's Garden Center's mission is to cultivate beautiful gardens, happy employees and thriving communities. Visit O'Toole's for the plants, the products, and the expert advice you need to grow the garden of your dreams. O'Toole's is proud to be a local, family owned business with over 40 years of heritage. We offer high quality garden products at affordable prices, so everyone can enjoy spending time together outside with friends and family. Let's grow together!



Featured Plant & Product

Pumpkins

Pumpkins have arrived! Local pumpkins, mums, hay bales, and corn stalks are here now. Come pick your favorites this week.

WaterSaver Winterizer

This late fall lawn feeding is the most important of the year and is often overlooked. 100% organic, non-burning DPW based lawn food. It also contains mycorrhizae which is a beneficial microorganism that help roots absorb more water and nutrients from the soil.

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40% Off All Trees, Shrubs, Roses, and Citrus Plants 20% Off All Other Plants

Valid through October 31

Now through October 31st, save 40% off on all trees, shrubs, roses, and citrus plants. Save 20% off on all other plants. (Just a heads up: indoor houseplants and succulents aren't included in this one.)

50% Off All Pennington Grass Seed

While Supplies Last

Now is the perfect time to re-seed your lawn. Pennington Grass Seed is 50% off. While supplies last. Stock up and save!


Plant Nerd Rewards Club
Plant Nerd Rewards Club

1. Join Free – Sign Up Today. No Cost Ever.
2. Earn Points – 1 Point per $1 Spent.
3. Redeem – 100 Points = $5 Off Next Purchase.

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Gift Cards

Consider a gift card for birthdays, Mother's Day, or the Holidays. Shop together, plant together and watch together as your gift grows and blossoms into the future!

Shoppers browsing rows of tomato plants at TomatoMania at O'Toole's Garden Center
Tomatomania 2026

Tomatomania was back at O’Toole’s for year two, with 100+ varieties across both stores and a whole lot of first-timers, new neighbors, and tomato lovers. Watch the recap.

Neptune’s Harvest at O’Tooles Garden Center: Soil Health, Water Retention, and Family Tradition

Patrick: I’m Patrick from O’Tooles Garden Center. I’m here with Ann from Neptune’s Harvest. Ann: So I just flew in from Massachusetts, and I heard you were in a drought, but clearly I brought some weather for you guys. Patrick: For us here in the arid west, water is always really important. Moisture Retention and Soil Health Ann: Water is …

All Blog Entries
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2020 Garden Giveaway Winners!

September 18, 2020
It was so inspiring to see all the creativity and gardening passion out there! Check out the winners of our 2020 Garden Giveaway! Read Full Blog Entry…
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Ask a Gardener – Japanese Beetle
June 11, 2020
Japanese Beetles damage plants as both adults and larvae. Adults feed on soft leaf tissue, leaving skeletonized foliage. Larvae feed on roots, especially turf grass, leaving dead, brown patches in the lawn. Cech out this blog entry for tips and products to address both the larvae and the adult bugs. Read more