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Harlequins Gardens

Harlequins Gardens

Boulder's specialist in well-adapted plants

Harlequin’s Gardens reopens March 4, 2021

Gift Certificates can be purchased and mailed
year-round, even when we are closed!

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Home | Blog | Sustainability | Managing Weeds Organically

Managing Weeds Organically

Corn Gluten: made from corn it functions as an organic weed-and-feed. It works by keeping all seeds from germinating. Once a plant (or weed) begins to grow the Corn Gluten will not harm it. Very effective when used twice a year, in October and February. The effect lasts 6 months. The feed part is the 9% nitrogen fertilizing effect which thickens grass and stimulates the growth of all plants.

20% Vinegar: this natural acid will burn plant tissues it is sprayed on. Best to apply in bright sunlight and hot days. Spray thoroughly. Very effective on annuals; perennials may need more than one application. Be careful not to overspray on desirable plants as it is non-selective. Repeated use can acidify soils which in our alkaline soils is not usually a problem except for alkaline-loving plants like lilac.

Perfectly Natural Weed Killer: a blend of plant oils and clove oil. Best to apply in full, hot sun. Spray thoroughly. May need to be repeated on deep-rooted perennials. Be careful not to spray desirable plants.

Do not let weeds go to seed: “One year seeding; seven years weeding.”

Cover the ground: if there is bare ground, something will grow there. Cover the ground with plants or mulch to claim the space.

Tall plants out-compete weeds for light and other nutrients. Mow lawns 3” high (especially in summer) to strengthen the grass plants and shade-out weeds

Enrich the soil so the desirable plants grow strong and vigorously. Support soil life with compost tea and/or microbial inoculants so the beneficial bacteria and fungi will strengthen the plants. This will give more competition for weeds.

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Join our Email List to receive empowering gardening tips, ecological insights and to keep up on happenings at Harlequin’s—such as flash sales and “just in” plants.

We do not ship plants!

Our plants are for sale ONLY at our Boulder location. We DO NOT ship plants. Come visit us!

Hours by Season

Harlequin’s Gardens is closed for
the season until early March 2021.

Due to COVID 19 we require
All Customers to Wear a Mask
and practice Social Distancing

 

 

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Contact Us

303-939-9403 (Retail)
staff@nullharlequinsgardens.com

4795 North 26th St
Boulder, CO 80301

Join Our Email List!

Join our Email List to receive empowering gardening tips, ecological insights and to keep up on happenings at Harlequin’s—such as flash sales and “just in” plants.

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Please Note

We accept Cash and Checks AND Credit Cards. (now accepting Visa, Mastercard, American Express & Discover cards)

The plants we grow are organically grown. All the plants we sell are free of bee-killing neonicotinoid pesticides.