Soil temperature—not the calendar—is the real signal for when seeds will sprout. Soil warms up far more slowly than the air. Many garden crops can be direct-sown this month when your soil is sufficiently warm to support germination and ensure survival of tender seedlings. Prominent among these are all the vegetables in the group known as Cucurbits, including cucumbers, melons, summer and winter squashes, pumpkins and gourds. [Read More]

Natural and Sustainable Gardening
Harlequin’s Gardens is a family nursery and garden center in Boulder, Colorado dedicated to natural and sustainable gardening for our region.
We specialize in native plants, organic vegetable and herb starts, xeriscape, hardy roses, Colorado-adapted and unusual perennials, fruit trees and berry bushes, groundcovers, hardy cacti, and seeds.

Earth-Friendly Products
We also offer Earth-friendly products to support your plants: soil-building products, composts, mulches, fertilizers; books by local authors; non-toxic pest-management supplies; and good advice.
Harlequin’s Gardens has a country charm and is famous for our customer service, our display gardens and the selection and success of our plants.

Join Our Virtual Garden Tour!
For over a quarter century Harlequin’s Gardens has shared plants, Eco-products, and advice for organic methods of gardening with our community. We are proud of the success so many have had and want to create a forum for all to share their results. So, we’re creating a “Virtual Garden Tour” for our community to share not just photos of their gardens but also a little about gardening goals, styles and experiences–especially sustainable approaches. [Read More]


