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Rocky Mountain Gardening



Cancellation Policy: Cancellations more than one week prior to a class are subject to a 15% cancellation fee. Cancellations with less than one weeks notice are non-refundable; please consider your payment a donation to the Gardens.


3-1/2 Season Vegetable Garden: Extending the Garden Season in Colorado

Rocky Mountain Gardening Elective

This class will help you to develop your skills in succession planting and extending the growing season to get 11-12 months from your vegetable garden. Learn the importance of plant family names and how to group them successfully and rotate them, cool and warm season crops and when and if you can replant for another season of certain crops. We will also cover techniques and materials to extend the season successfully so you can plant early in spring and keep certain crops going until late fall and into winter.


Members $39, Non-Members $44


Instructor: Patti O'Neal



Beginning Rocky Mountain Gardening

Rocky Mountain Gardening Elective


This is a course for the beginner or for newcomers to the Front Range Gardening Community. We will hit all the basics of what you really need to know to adjust your gardening skills to our climate or to begin your gardening success here on the Colorado Front Range.

If you have never gardened here before or are looking for more success, this is the class for you!

Learn the basics of gardening in our finicky climate and the skills necessary to become an enthusiastic gardener. Annuals, perennials and vegetables will be discussed, along with trees and shrubs for our climate, elevation and varying soils.


We will discuss plant selection, planting and troubleshooting. Leave with the knowledge and resources you need to plant the garden you have always wanted.


Subsequent weeks will focus on the elements, water needs, fertilizers and organic gardening.


Please bring a glass jar of soil to class. (Must be see through glass jar to study layers of your own backyard native soil)


$80 member, $90 non-member.


Instructor: Patti O'Neal


Best Fall Planted Bulbs for Perennializing

Rocky Mountain Gardening Elective


Want more than one year of spring bloom from your fall-planted bulbs? Come learn about the best bulbs and varieties for year after year of bloom in our area. Whether for perennial beds or naturalized landscapes, you will learn planting and cultural tips for maintaining long life. Discussion includes how best to use bulbs and design considerations with other plants and elements in the landscape.


Sign up now to discover the best cultivars of tulips and other bulbs that perennialize on the Front Range before purchasing bulbs to plant this fall. Taught by Carl Wilson, Denver horticulturist, speaker and retired CSU Extension Agent.


$26 member, $31 non-member


Instructor: Carl Wilson

Botany for Gardeners

Rocky Mountain Gardening Required Course Group I

This class provides an overview of basic plant biology, including structure, development, transpiration, photosynthesis and plant chemistry.

Students will gain essential knowledge for acquiring high-level pruning skills, for designing gardens based on specific plant requirements of the Rocky Mountain region, and for understanding interactions between plants and their microenvironments.

Required Text- Botany for Gardeners by Brian Capon, found online or in most book stores.


$213 member, $255 non-member.


Instructor: Sheridan Samano


Colorado Ecosystems

Rocky Mountain Gardening Required Course Group II

Study the native ecosystems of Colorado that range from plains grasslands to the alpine tundra, mountain meadows to sub-alpine forests. Learn to gauge your elevation and location by looking at the plant communities around you and explore the complex relationships between the plants and wildlife of Colorado.

$78 member, $88 non-member.

Instructor: Sheridan Samano



How to Plant a Tree: Tree and Shrub Selection and Planting

Rocky Mountain Gardening Elective


Trees and shrubs are one of the greatest investments we can make in our property and if cared for properly, can increase the value of our homes ten-fold or more. They are also a big investment and one that we often relegate the important decisions about to others.

How do you know what to plant where, when the best time to plant is for evergreens or deciduous trees and shrubs or the difference in planting strategies for a balled and burlapped specimen or a containerized plant?

Do you know what to look for when you go to the nursery to select a tree or how to dig a proper hole and amend it correctly to insure the best root spread in the appropriate amount of time? Should it be pruned after planting and how? And do you know how to properly care for your investment to avoid transplant shock or winter dessication injury?

We will cover all these concepts and more to make you more confident when choosing or planting trees and shrubs in your landscape or when supervising contractors who will do the job for you.


$39 member, $44 non-member


Instructor: Patti O'Neal


Principles of Pruning

Rocky Mountain Gardening Required Course Group I

Pruning practices have evolved with advances in science, technology and tools. Improper trimming and cutting can damage your trees and shrubs, and make them more susceptible to damage from our unpredictable fall and spring snows. Enhance the beauty and strength of your trees by learning when, why and how to prune. You will be introduced to the theory of pruning and the tools you need.

There will be a 1-hour break for lunch. The last hour and a half of the class will feature a hands-on demonstration of proper pruning practices.  

Dress for an outdoor class. Bring water, a bag lunch and sunscreen.


$95 member, $105 non-member.


Instructor: Tim Buchanan


Putting Your Rose Garden to Bed


Just about everyone grows a rose bush or two.Congress designated the rose as America s national floral emblem in 1986.The popularity of growing roses began thousands of years ago and continues today.The rose growing series offered by American Rose Society Consulting Rosarians and experts from the Denver Rose Society will cover how to grow healthy, easy care beautiful roses for years to come. The series covers secrets to successful rose growing, no pain pruning, versatile shrub roses, fragrant roses, and winter care. Choose one class or take them all and come away with confident rose growing skills and greater appreciation for the  Queen of Flowers. 



Putting your Rose Garden to Bed

Preparing your roses for winter is the key to growing those fabulous flowers in the spring. Learn why fall and winter care keeps your roses healthy from year to year and how to prepare new rose beds for spring planting. Get tips on early transplanting or rearranging the rose bed. A recommended list of roses that do well along the Front Range and higher altitudes will be included to take home.



$27 member, $32 non-member.


Instructor: Peggy Williams




Seven Principles of Water-Smart Gardening

Rocky Mountain Gardening Required Course Group I

Gardening remains high and dry in the Rocky Mountain region! Water-Smart Gardening is an environmentally friendly way to create a beautiful home landscape that will thrive under low water conditions. Join this class to learn the principles of Water-Smart Gardening and some of the many plants that you can incorporate into your yard.


$55 member, $62 non-member.


Instructor: David Winger

Tree ID and Selection

Rocky Mountain Gardening Required Course Group II

Trees are a fundamental part of any landscape design, but tough climate and soils in our state make tree selection and growth challenging. This seminar provides an overview of shade, ornamental and conifer trees, both common and unusual, that can be grown in Colorado.

Individual trees will be discussed in the classroom using slides and samples, followed by a field trip to Regis University to see trees in a park-like setting where they have been able to attain mature size. Cultural and maintenance requirements will be covered.


$135 member, $161 non-member.


Instructor: Tim Buchanan




Understanding Front Range Soils

Rocky Mountain Gardening Required Course Group I

Soil is the bottom line in starting your garden successfully, and the properties of Front Range soils present unique challenges. By learning some simple physical and chemical properties of soil, including parent material and its formation, you can gain a better understanding of how plants grow in it and what to consider in plant selection and landscape design.

Class will be 9:00 a.m. to 3:30 p.m. with a 1/2 hour lunch break; please bring a sack lunch.


$85 member, $92 non-member.


Instructor: Jean Reeder



What Made My Good Plant Go Bad?

Rocky Mountain Gardening Elective



Did the glorious beauty promised by the garden catalog, nursery salesperson or garden designer fall flat when your tree's leaves started to look like hanging shreds of green tissue or your shrub assumed a ghostly shroud of white covering its leaves?


You may be surprised that insects and diseases are NOT the main cause of problems in the garden.Because of this, you have more control over how many of those problems you may get. This course will focus on the root causes that attract those pests to your garden in the first place and what to do about it.


This hands-on class will give you an overview of the most common types of plant problems and what you can do to prevent their yearly reoccurrence.


Note: This class is a lecture and hands on lab. You may bring a sample of a plant or turf you want diagnosed to class. Registration confirmation will include info on how to take a good sample.



$39 member, $44 non-member.



Instructor: Patti O'Neal

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