Pest control, flowering beauties




This is the season for pest problems (diseases, insects, fungus) and here at Harlequin’s Gardens we have products that have been proven successful for combating them in effective and environmentally safe ways!  Below are some of our favorite pest control products; come on in to see our full range of products, some of which are on sale at 50% off through Sunday, July 1! 

While you’re here, please utilize our reference library and knowledgeable staff to help with your plant and pest identification needs.    
  • When bringing a plant identification sample, please bring a sizable sample including numerous leaves, flowers, buds, etc.
  • When bringing a pest sample, again bring in a sizable plant sample and several bugs, eggs, etc.
  • We request that you bring all samples in clear plastic bags to avoid contamination of our plant stock.  Thank you!


Pure, cold press with active ingredient Azadirachtin, which is approved by the EPA.  Neem controls, stops feeding of and/or repels Aphids, Leafhoppers, Scale, Leafminers, Beetles, Spider Mites, Mealy Bugs, Thrips, Caterpillars, Weevils, Whitefly, Grasshoppers and fungal disease like Powdery Mildew.  It is not harmful to humans, animals, beneficial insects or the environment (not good over water with fish). 

Neem must be sprayed directly on pests to be effective for killing; it prevents molting and stops feeding, and works as a repellent. Spray in the early morning or evening.  Neem oil solidifies at 50˚, so thaw it in a warm water bath before mixing.  Then, mix it with one quart of warm water and ¼ teaspoon of mild dish soap, and shake occasionally to emulsify.  For very tough pests try 2 teaspoons per quart with ½ teaspoon soap (test on small area first).  Neem requires some care to use but is safe and very useful.


Organic protection & correction of fungus diseases. It has been tested commercially for over 9 years. This alternative to toxic fungicides has proved effective against powdery mildew, blackspot, rust & others. This product is perfectly safe for use on vegetables.  Local rosarians swear by it!  


Amazingly effective not only for aphids and mites, but even for blister beetles and potato beetles, that devour clematis, mirabilis, and anemome!  Veggie Pharm also acts as a repellent for insects and small animals.


Sadly Japanese Beetles have become an annual problem in Boulder and neighboring counties. We are now carrying Safer® Brand Replacement Bait to help you with the Japanese Beetle Battle.  This product uses a food and sex attractant to lure insects into the trap and disrupt the mating cycle of destructive Japanese Beetles. There are no sprays and has no mess, and under ordinary weather conditions, this bait should last about 12 weeks.

Trap Placement, Application Rate and Use:

  • Place traps as beetles emerge (late June in Colorado)
  • Place traps on the generally upwind side of vegetable gardens, flower gardens, ornamental shrub planting and other outside landscape planting attached by the beetles. Apply traps at the rate of one trap per 50 linear feet along two sides of plant perimeters. For example, if the site is 1-50 linear feet, place only one trap on each of the two sides. If the site is 51-100 linear feet, place two traps on each of the two sides, etc. Do not enclose the treated site with traps.
  • Place traps in sunny areas 3 to 5 feet above the ground.
  • Place traps at least 10 feet away from the planting as they may attract beetles to foliage if placed closer
  • Replace traps when full. If trap catches decline and beetles are still present, replace bait pack. Remove traps from site when beetles are no longer present.


Mikl recently wrote an excellent article detailing fireblight causes and the best ways to treat your affected plants.  Click here to read more!


These beautiful, useful and successful plants, including 2-gallon roses and shrubs are on sale through the weekend!!  And find Surprise sale items while you’re here.


Acer tataricum (Tatarian Maple), 2-gallon at $30 (regularly at $36)

Has those pretty red winged seed pods, like ‘Hot Wings’. 15′ tall, alkaline and drought-tolerant.  (Pictured left.)

Cercocarpus ledifolius, 2-gallon at $20 (regularly $26)

Large broadleafed evergreen shrub/small tree (12-20’ x 9-12’) native to the Southwest and Western foothills. Upright growth habit and small lance-shaped, dark green, leathery leaves with edges that curl under. White, fuzzy, curled “seed tails” in fall are both attractive and unusual. Grows well in full sun in low fertility, well-drained soil. Zone 4. Low water. Deer resistant.

Cercocarpus montanus, 2-gallon at $16 (regularly $26)

Native shrub (6-9’ x 3-6’) with dark gray-green, deeply veined leaves. Inconspicuous flowers produce fuzzy, twisted “seed tails” in fall, providing interest through the winter. This xeric plant grows here in our foothills, and thrives in full sun and well-drained soil. Zone 2.

Cotoneaster multiflora, 2-gallon at $16 (regularly $26)

Little known and underused cotoneaster (pronounced: co-tow-nee-aster),  with small white flowers in spring that mature to bright red fruit in fall. A large shrub (8-10’ x 10-12’) with graceful arching branches. Native to China. Zone 4. Plant in full sun with low-moderate water.

Golden Rain Tree, 2-gallon at $30 (regularly $35)

Drought-tolerant, 35′ tall, ornamental tree with clusters of yellow flowers in the summer followed by Chinese lantern-like pods.

Ligustrum vulgare ​Cheyenne Privet, 2-gallon at $16 (regularly $26), #5 at $29 (regularly $39)

An upright, rapid grower with dark green foliage and fragrant clusters of small white flowers in early summer. Takes shearing well which makes this an excellent, reliable shrub for screens and hedges. Grows to 9-12’ x 3-6’ Plant in full sun to part shade with low-moderate water. Zone 3.  (Pictured right.)

Lodense Privet, 2-gallon at $20 (regularly $26)

Very compact, dense, upright slow-growing shrub with glossy green foliage that holds on late into the season. Loose clusters of white flowers in early summer produce shiny black (possibly poisonous) fruit. Excellent as a low hedge. No significant fall color (yellow). Some potential for stem dieback during severe winters. Full sun to part shade. Zone 4.

Goldflame Spirea, 2-gallon at $20 (regularly $26)

The spring foliage of this 2-3′ x 2-3′ shrub is bright gold with red tips, turning gold-green in summer. Coppery-orange fall color. Dark pink flower clusters in summer. Terrific accent or border plant with many accenting color changes throughout the season. Zone 4.

Purple Lilac, 2-gallon at $20 (regularly $26)

Stout branches form an upright, vase-shaped shrub (10-12′ x 10-12′) producing fragrant purple flowers in large, pyramidal clusters in mid-spring. Leaves are thick and heart-shaped, with a lustrous blue-green color. Tolerant of alkaline soil and drought conditions. Zone 2.  (Pictured left.)

Physocarpus opulifolius ‘Nana’ (Dwarf Ninebark), 2-gallon at $20 (regularly $26)

Attractive plant with small green leaves on a dense, (4-6′ x 4-6′) bushy form. White flowers in May to June are followed by reddish seed heads. Useful as a hedge plant. Zone 2.

Siberian Pea Shrub, 2-gallon at $22 (regularly at $27)

An adaptable, tough, super-hardy shrub that resists deer, withstands heat and cold, sun or part shade, moderate or low water. Makes an excellent screen or hedge. The stems are an attractive bright green and have some spines, and foliage is finely textured. Pea-like yellow flowers in spring are followed by red-brown pods that make nutritious food for chickens. 10-15′ tall, zone 2.

Euonymus fortunei Minima, 1-gallon at $5 (regularly at $17)

Evergreen vine to 10′. Small leaves, drought-tolerant, and tough.

Crataegus ambigua (Russian Hawthorn), 3-gallon at $40 (regularly at $48)

A small, attractive, broad-headed tree with medium green, deeply lobed foliage. Masses of white flowers appear in late May, becoming abundant 1/2″ brilliant red fruits in mid- to late summer. Can be single or multi-trunked. Full sun. Drought-resistant. 15′ x 15′, zone 3.  (Pictured right.)

Hardy Boxwoods ‘Julia Jane’ and ‘Saskatoon’, 1-gallon at $15 (regularly at $20)

3’x3′ compact evergreen shrubs for shade. Low-water, deer-resistant.


2-gallon Roses in the Sale area are $20 (regularly $26) unless otherwise marked.

Darlow’s Enigma Shrub rose, 2-gallon at $20 (regularly at $26)

This 8-10′ x 6′ rose produces large quantities of small, white, very fragrant single blooms. Good repeat. (Pictured left.)

Baltimore Belle Climbing Rose, 2-gallon at $20 (regularly at $26)

10′ climber with double, light-pink to white, sweetly fragrant flowers in the spring. Vigorous and tough.

Martin’s Pink Climbing Rose, 2-gallon at $20 (regularly at $26)

The beautiful, soft pink, double flowers are fragrant. A vigorous, 10′ rambler. Spring-blooming.

The Gift Shrub rose, 2-gallon at $20 (regularly at $26)

3′ x 4′, clouds of small white flowers. Profuse-blooming. Tough as nails!

FREE package of mycorrhizae with every purchase over $50!

We are Closed on Independence Day!

In a long standing tradition, Harlequin’s Gardens celebrates Independence Day by taking the day off and being

closed on Wednesday, July 4.


We’ve completely restocked our glove rack in all styles, colors, and sizes (especially small sizes) Come in and see which ones are a match for you!


If you’re struggling to find a way to create a support for your vine, your outdoor mist system, or holiday lights, check-out our Plant Anchor System.  It works on masonry, wood, stucco, glass, plastic, steel and concrete – without nails, or screws!  It’s pretty amazing!


We have some great annuals in stock, many of which are on sale at $1.50 each – wow!

Come in and see our selection!


Many gardeners think of Spring as the height of the ornamental gardening season. Sure, so many of our best-known flowering plants – Tulip, Crocus, Daffodil, Primrose, Peony, Lilac, Forsythia, Oriental Poppy, Basket of Gold, Bearded Iris, are at their showiest in spring. But as we pass to the other side of the Summer Solstice, a whole new palette of blooms arises, including many Natives, lots of Prairie-dwellers and Steppe plants, and hardy plants from South of the Border, bringing bold color and attracting more and different beneficial insects and pollinators to the garden.
Here is the beginning of our list of July beautiesFor the full list of those July flowers to inspire you, Click here, or visit the nursery for the list! 
  • Acanthus balcanicus (Bear’s Breech)
  • Achillea (Yarrow)
  • Aconitum  (Monkshood)
  • Agastache aurantiaca ‘Coronado’
  • Agastache aurantiaca ‘Coronado Red’
  • Agastache ‘Blue Boa’
  • Agastache foeniculum (Anise Hyssop)
  • Alcea (Hollyhock)
  • Allium caeruleum/azureum
  • Allium flavum
  • Allium senescens  (Pictured right)

Pictured below are some of our current flowering beauties.​


Top Row: Oenothera macro. ‘ Silver Blade’, Clematis ‘Warsaw Nike’, Rosa Pink Drift
Second Row: Acantholimon hohenackeri, Rosa Morden Sunrise, Berlandiera lyrata – Chocolate Flower
Third Row: Penstemon virgatus – Wand bloom Penstemon, Sedum ‘Blue Spruce’, Phlomis cachmeriana
Fourth Row: Rosa ‘Abraham Darby’, Corydalis lutea, Lilium regale – Regal Lily

Upcoming Classes List

We offer empowering classes with great teachers throughout the season.  Coming soon will be more of our class offerings.  Our teachers have spent years honing their skills in Colorado and will help guide you to success. We are charging $15 to support our speakers and Harlequin’s educational direction. It is best to pre-register for these classes both in case they fill up or too few people register, and we have to cancel. Pre-payment assures your place in the class.  Pre-registration is appreciated and highly recommended for all classes with a quick call to 303-939-9403.  (This list is also available on our website.)

Sun, Jul 15 at 1 PM – TIPS & TRICKS OF XERISCAPE with Mikl Brawner

Gardening with less water is not that hard if you know how! There are tricks that will improve your success. Mikl’s will pass on his 30 years of xeriscape experience.   $15

Sat, Jul 21 at 1 PM – BASIC LANDSCAPE DESIGN with Elaine Walker

Elaine is a landscape architect who will show you the elements of designing areas of your property. Learn how to observe your site, identify goals, take a site analysis, create a comprehensive design, and how to approach installation in manageable pieces.   $15

Sun, Aug 5 at 1 PM – PRUNING FOR STRENGTH, HEALTH, AND BEAUTY with Mikl Brawner

Learn how to train young trees, restructure shrubs and trees damaged by storms, and to prune roses. Mikl has over 35 years of experience in pruning. (Repeated on Sep. 16.)   $15


Don’t miss our 8th annual ‘Taste of Tomato’ festival & tasting event along with Boulder County CSU Cooperative Extension!  There are always exciting new varieties to taste and learn about. The location is not yet decided. Check our website for details and entry information.


Join Zach for a class about the many ways you can incorporate mushrooms and fungi in your garden and lifestyle. You will learn the basic techniques for growing mushrooms, how to encourage fungal activity in your soil, and about the health-giving properties that you can experience from eating more mushrooms!   $15

Sun, Aug 26 at 1 PM – LOW TECH GREENHOUSE DESIGN & OPERATION with Mikl Brawner

Mikl has been researching, building, and using simple greenhouses for 20 years. This class will focus on five designs on site at the nursery.   $15

Sun, Sep 9 at 1 PM – HOW TO MULCH with Mikl Brawner

Weedbarrier, wood chips, straw, fine gravel, bark? Which mulches should be used and where? Why is mulching so important? What’s wrong with redwood and cedar? Mikl will discuss these questions and suggest solutions.   $15  (Photo Credit: The Rock Place)


In this class, you will learn the basics of mushroom identification and what you should know before going out on a hunt. We will also introduce a variety of local mushrooms and their identification features. A good class for beginners as well as those who have done some foraging before.   $15

Sun, Sep 16 at 1 PM – PRUNING FOR STRENGTH, HEALTH, AND BEAUTY with Mikl Brawner

Learn how to train young trees, restructure shrubs and trees damaged by storms, and to prune roses. Mikl has over 35 years of experience in pruning. (Repeat of Aug 5.)   $15


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We’re looking forward to seeing you this week!
In gratitude,
Eve, Mikl and the super hard-working Staff at Harlequin’s Gardens