Welcome to Denver Botanic Gardens' online registration and ticket purchasing site

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 course is designed for the Front Range gardener beginner. The basics of what is needed to adjust gardening skills from other climates to the Front Range’s finicky climate are covered. If you have never gardened here before or are looking for more success, this is the class for you! Learn the skills necessary to become an enthusiastic gardener. Annuals, perennials and vegetables are discussed, along with trees and shrubs that thrive in our climate, elevation and varying soils. Plant selection, planting and troubleshooting is discussed.

Subsequent weeks 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

Companion Planting

Have you heard of the Three Sisters of the garden? According to Iroquois legend, corn, beans, and squash are three inseparable sisters that only thrive when planted together. Companion planting has occurred throughout the history of the earth. Nature knows how to grow by bringing complementary plants together and keeping antagonists apart. You can do the same in your garden and greatly increase the health and well-being of your plants as well as the yield. Roses love garlic and tomatoes love basil and there is usually more than one reason why. Come and learn the science and the lore and make companion planting a natural part of your garden. If you are a vegetable gardener, companion planting can help keep the food fully organic. Crop rotation and soil building, a vital part of companion planting, are also covered. From ancient techniques to recent experiments and 17 years of personal experience growing food, herbs and flowers together, Penn and Cord Parmenter discuss a range of beautiful, diverse and stunning combinations. Don't miss this one - it's never too late to plant companions!

 

Instructors:

Penn and Cord Parmenter.

Penn and Cord Parmenter are high altitude food growers. They live in the Wet Mountains in South Central Colorado and they apply a multitude of techniques to overcome the challenges of the high country. Their totally sustainable greenhouse provides food year round for them and their three boys.

 

Converting Lawn to Xeriscape

Do you want to beautify your landscape and save water at the same time?

 

We will address some design ideas and go into detail about how to replace some of your Kentucky bluegrass lawn with Water-Smart perennial and ornamental grasses. We’ll get into soil types and irrigation adjustments requirements as well.

 

$20 member, $24 non-member

 

Instructor: Curtis Manning

 

Photo: Winger Photography

Follow-on Vegetable Gardening

 

Do you plant start-of-season vegetables only to end up with vacant ground later in summer and fall? The late summer and fall/winter seasons can be productive for vegetable gardeners in-the-know for planting follow-on crops and for improving garden and soil health. This class will show you the possibilities including cut-and-come-again crops, quick maturing varieties, season extension, winter and cover crops, garden health improvement tips and more. Come learn what to plant in mid-summer and how to manage a Front Range vegetable garden through fall and winter. Presented by Carl Wilson.

Instructor: Carl Wilson

$26 member, $31 non-member

 

Image: Courtesy of interchangeableparts (Flickr)

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

 

Rocky Mountain Gardening Elective

Trees and shrubs are one of the greatest property investments and can greatly increase a home’s value. Trees are also expensive, so learn how to determine what species is best for your yard, where and when to plant it plant and how to care for it. Evergreens, deciduous trees and shrubs have varying preferred planting times and care strategies.

This class also shares tips on what to look for when you go to the nursery, how to dig a proper hole to insure the best root spread in the appropriate amount of time and when and how to prune. Also learn how to properly care for your tree to avoid transplant shock or winter desiccation injury. This class can make homeowners more confident when choosing or planting trees and shrubs or when supervising contractors.

 

 

$39 member, $44 non-member

 

Instructor: Patti O'Neal

 

In the Field - Plant Conservation and Monitoring

 

 

 

Never-Fail Perennials

Rocky Mountain Gardening Required Course Group II

Learn to choose and plant a wide variety of easy-to-grow plants for years of low-maintenance enjoyment.

Shalene will demonstrate how to plan your perennial garden for a continuous succession of bloom. The final class will be a walk in the Gardens to view examples of perennials discussed in class, as well as a time for additional questions and discussion.

 

$122 member, $145 non-member.

 

Instructor: Shalene Hiller

 

 

 

 

 

Passive Solar Greenhouse Growing

Rocky Mountain Gardening Elective

Penn and Cord Parmenter have been growing food in their passive solar sustainable greenhouse for 12 years. Their expertise is shared in this class to help take some of the mystery out of something that should be easy and yet can seem so hard. Matching appropriate plants to the microclimates within the greenhouse is crucial. Often the plants are the best teachers in the greenhouse and together participants learn how to work within the unique greenhouse eco-system.

Favorite foods, herbs and flowers are discussed as well as forcing plants for seed production, over wintering potted plants and succession planting for a year round harvest.

The Parmenters share tips for keeping the greenhouse organically under control from bugs and disease. Preventative methods and what to do when an outbreak strikes are discussed.

Penn and Cord lead busy lives with three kids and a business and yet they manage to grow food year round in their greenhouses. When life gets in the way and you’re thinking of turning your greenhouse into a shed, don’t despair because there are answers for successful greenhouse growing.

 

$26 member, $31 non-member

 

Instructors: Penn and Cord Parmenter

 

 

See also "Sustainable Greenhouse Design" - offered on the same weekend!

 

 

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

 

 

 

Saving and Adapting Seed to High Altitudes

Rocky Mountain Gardening Elective

Historically amateur gardeners and farmers have been responsible for the vast bio-diversity we’ve enjoyed over the decades by saving and developing their own food seed.

As that bio-diversity is being lost, the time has come for us to learn how to save our own seed again. This is not only economical but since seed has a built in self-replicating program and an ability to adapt to the surrounding environment, saving seed is crucial to the movement toward self-sufficiency and sustainability. Colorado is particularly full of microclimates, so adapting seed to your unique climate is especially helpful for the wild and varied extremes we all endure.

We will cover vegetables, herbs and flowers and take a look at the world seed situation and what you can do about it in your own backyard. This class is intended to inspire you to make full use of the abundance given to you from your own garden.

We will discuss Seed Lending Libraries, Seed Banks, Living Seed Banks, Seed Swaps and how to take care of the seed you save. We will demonstrate seed saving techniques in both wet and dry methods.

Rejoin an ancient ritual that is still in our DNA and our memories – our grandparents saved seeds and theirs before them. Re-connecting to this most important part of gardening is an incredibly rewarding experience – especially when you are helping to develop stronger, more vibrant seed. This class applies to all elevations.

 

$26 member, $31 non-member

 

Instructors: Penn and Cord Parmenter

 

 

Super Small Space Vegetable Gardening - In Containers

This class is great for apartment, condo and patio home dwellers who are short on outdoor space. Learn about the bounty of vegetable and herb container garden options. It is possible to grow vegetables without a plot of soil.

 

Learn about good container culture, soil, light, water, organic fertilizers, pesticides, frost protection, along with the best sized containers and how to create vertical support. You can even learn how to create mixed containers of vegetables, flowers and herbs.

 

 

$32 member, $37 non-member.

Instructor: Patti O'Neal

Photo: suzettesuzette (Flickr)

 

 

 

Sustainable Greenhouse Design

Rocky Mountain Gardening Elective

 

Have you ever wondered if a greenhouse that needs NO supplemental heating or cooling could be made? The answer is yes!

No more over-heating and freezing in all-glazed greenhouses. The sustainable design balances the use of thermal mass, glazing, insulation and sun angles to achieve the stabilization needed in our extreme climate without the use of fossil fuels. Learn how to design a sustainable greenhouse from the ground up, using salvaged or new materials to achieve the look and performance you want. You can also use these techniques to improve an existing greenhouse.

This class is a comprehensive look at how passive solar greenhouses work and covers topics such as how to orient the building, basic principles of passive solar design including the use of stored water as thermal mass, simple math formulas to help guide your design, a materials list and drawings and calculations for a 13’ x 15’ greenhouse.

In 2000, the Parmenters built their first greenhouse out of 90% recycled materials on top of an 8,120 ft. elevation decomposed granite mountain. Since then, they have designed and built many more and are ready to share what they have learned about state-of-the-art materials and cost-saving strategies. Lose yourself in a year round garden sanctuary.

 

 

$150 member, $160 non-member

 

Instructors: Penn and Cord Parmenter.

Penn and Cord Parmenter are high altitude food growers. They live in the Wet Mountains in South Central Colorado and they apply a multitude of techniques to overcome the challenges of the high country. Their totally sustainable greenhouse provides food year round for them and their three boys.

 

 

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

 

 

 

Troubleshooting in the Vegetable Garden: If A Tomato Could Talk

Rocky Mountain Gardening Elective

 

If your vegetables could talk, they would tell you exactly how to care for them properly to prevent disease or insect invasion. The next best thing is for you to participate in this class and learn what insects and diseases attack your vegetable gardens and containers and what you can do about it.

Learn about organic and inorganic management strategies, how they work and how to correctly apply them. This class stresses integrated pest management, a concept that uses the least invasive methods of pest control first to keep food safe and delicious.

 

$26 member, $31 non-member.

 

Instructor: Patti O'Neal

 

Water Wise Landscape Planning for Non-Designers

This class will show you how to begin planning a landscape better suited to a dry climate AND your needs. While low water use plants are great, they’re only as good as how you use them in the garden. This class explains how to think through your landscape before you plant to insure success and a put-together look. It will help if you want to plant a landscape yourself or before hiring a designer/contractor to do the work for you. Take home materials give you a way to follow-through with the beginning thoughts you have in class and make your plan.

 

Instructor: Carl Wilson

$46 members, $50 non-members, includes a $5 materials fee

 

Image: Courtesy of Winger Photography

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? You may be surprised that insects and diseases are NOT the main cause of problems in the garden. Gardeners have more control thank they may think over how many plant problems. This provides an overview of the most common plant challenges and what you can do to prevent their annual recurrence. The course focuses on the root causes that attract pests and disease to your garden in the and what to do about it.

 

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 includes info on how to collect a good sample.

 

 

 

 

 

$39 member, $44 non-member.

 

 

Instructor: Patti O'Neal

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