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Gardening

2020 7th Annual Tree Diversity Conference

To protect our urban forests, which are threatened by pests and pathogens, a greater variety of tree species is necessary.

 

For our seventh annual conference we will continue to explore the relationships between landscape design, horticultural practices and the use of a greater variety of tree species.

 

Between them, our speakers this year boast an extravagant depth of experience ranging from worldwide plant exploration to landscape and garden design, promotion of new plant materials, administration of some of our country's most noted horticultural conferences and institutions and hands-on experience with plant testing and data collection.

 

Public $80, includes all programming and lunch

$70 Promo, includes all programming and lunch

*Promotional price available to all Members of Colorado Tree Coalition and American Society of Landscape Architects

 

 

Symposium will be held at Denver Botanic Gardens in Mitchell Hall.

 

Speaker Lineup

Peter Zale, Associate Director of Conservation, Plant Breeding & Collections, Longwood Gardens, Kennett Square, PA

 

Stephen Foltz, Director of Horticulture, Cincinnati Zoo and Botanical Gardens, Cincinnati, OH

 

Keith Warren, Director of Product Development (retired), J. Frank Schmidt & Son, Co., Boring, OR

 

Panayoti Kelaidis, Senior Curator and Director of Outreach, Denver Botanic Gardens, Denver, CO

 

Alan Rollinger, Landscape Architect & Designer, Denver, CO

A New Gardener Boot Camp

Are you a blank slate when it comes to starting your very own garden? Worried about ending the growing season with a pile of dead plants and sad vegetables? Join us at Denver Botanic Gardens for a full day event, packed with answers to all those looming and mysterious gardening questions. Get started on the right foot this year with all of our best beginner’s classes, carefully designed to equip you with all the tools you’ll need to master that garden once and for all!

 

Classes include:

 

Garden Planning 101… where do I start?

This beginner’s class will take you step by step through the process of laying out a plan of attack for your garden! Whether you are starting with a blank slate garden or working with an old outdated garden this class will give you the basics on where to start. It will discuss needs and planning tools for raised beds, container gardens and in-ground vegetable gardens. We will discuss the basics of garden locations, sun requirements, water needs, starting from seed, transplanting and the basics of planning the organization of perennials and annuals, trees and shrubs. This class is the perfect fit for anyone needing to understand how the garden works together as a whole.

 

Soils 101

Soils will always be the first place to start when building a beautiful garden. This class will cover the best management practices for building your soil for in-ground beds, containers and raised beds. It will discuss the basics of composting as well as demonstrate the value of soil testing.

 

Beginning Vegetable Gardening

If you have never planted edible plants or had little success at growing your own vegetables, our instructor will walk you through the ABCs from planning, soil preparation, crop selection, watering, fertilizing, pest protection, and harvesting your first vegetable garden. We will cover tips on the most popular vegetables to grow, including leafy salad greens, tomatoes, squash, peppers, and more. You'll leave with a comprehensive understanding of how to successfully do each gardening task, and take home a planting guide that will help you through the entire growing season.

 

Annuals and Perennials for Color in the Garden

Plants provide the backbone of the garden with vibrant colors, textures, and forms that weave together to create your own personal oasis. Learn the basics of perennials, annuals and biennials, how to make the best selections for your garden and how to best maintain your plants throughout the season. From the traditional to the unusual we will explore the limitless varieties of plants and send you into the growing season prepared.

 

These classes combined usually cost more than $200, but with New Gardener Boot Camp, the event will be $60 members, $80 non-members. Register early as space is limited.

 

Lunch included with registration

A New Gardener Boot Camp - Evening Series

Are you a blank slate when it comes to starting your very own garden? Worried about ending the growing season with a pile of dead plants and sad vegetables? Join us at Denver Botanic Gardens for two evenings packed with answers to all those looming and mysterious gardening questions. Get started on the right foot this year with all of our best beginner classes, carefully designed to equip you with all the tools you will need to master that garden once and for all!

 

This series occurs on two evenings, two boot camp classes will be covered each evening.

 

Classes include:

Garden Planning 101 - Where do I Start?

This beginner class will take you step by step through the process of laying out a plan of attack for your garden! Whether you are starting with a blank slate garden or working with an old outdated garden this class will give you the basics on where to start. It will discuss needs and planning tools for raised beds, container gardens and in-ground vegetable gardens. We will discuss the basics of garden locations, sun requirements, water needs, starting from seed, transplanting and the basics of planning the organization of perennials and annuals, trees and shrubs. This class is the perfect fit for anyone needing to understand how the garden works together as a whole.

Soils 101

Soils will always be the first place to start when building a beautiful garden. This class will cover the best management practices for building your soil for in-ground beds, containers and raised beds. It will discuss the basics of composting as well as demonstrate the value of soil testing.

Beginning Vegetable Gardening

If you have never planted edible plants or had little success at growing your own vegetables, our instructor will walk you through the ABCs from planning, soil preparation, crop selection, watering, fertilizing, pest protection, and harvesting your first vegetable garden. We will cover tips on the most popular vegetables to grow, including leafy salad greens, tomatoes, squash, peppers, and more. You'll leave with a comprehensive understanding of how to successfully do each gardening task, and take home a planting guide that will help you through the entire growing season.

Annuals and Perennials for Color in the Garden

Plants provide the backbone of the garden with vibrant colors, textures, and forms that weave together to create your own personal oasis. Learn the basics of perennials, annuals and biennials, how to make the best selections for your garden and how to best maintain your plants throughout the season. From the traditional to the unusual we will explore the limitless varieties of plants and send you into the growing season prepared.

These classes combined usually cost more then $200 but with New Gardener Boot Camp event will be $60 members, $80 non-members. Register Early as space is limited.

A Simple Guide to Planning a Seed Garden

 

Learn how planning ahead can yield big results from your harvest. The seed life cycle is already happening in your garden, so it is easy to integrate seed saving into your personal seed bank and keep plants - including vegetables, herbs and flowers - dynamic and adapting to your garden. This class breaks down the easy-to-save, intermediate-to-save and advanced-to-save varieties most commonly grown in home gardens.

The Parmenters will cover wet and dry seed saving, plant families, seed terms, resources, harvesting, storage, isolation distances, hand pollinating and more.

 

Price: $31, $26 member

Instructors: Penn and Cord Parmenter

 

Penn and Cord Parmenter are high altitude food and seed growers. In 1991, they began homesteading and growing on 43 acres in the Wet Mountains of South-Central Colorado at 8,120 ft. They apply a multitude of techniques to overcome the challenges of the high country. They are owners of Smart Greenhouses LLC, a sustainable greenhouse design company and Miss Penn s Mountain Seeds, providing regionally adapted seeds for extreme climates.

Amazing Vegetables A to Z: Extended Gardening

Rocky Mountain Gardening Elective

This is the class that will hone your skills as an amazing vegetable gardener. It is designed to take beginners to a new level and remind intermediate gardeners of the success strategies that always work when we go off course and forget the science of what got us to success in the first place. We will cover the science of vegetable gardening, do some myth busting, and provide you with some clear cut strategies to get the biggest harvest from the space you have.

The classes are 2 ½ hours each and are designed so that you can take the entire series or drop in for a refresher on the single class or classes that you want to brush up on. We will use a combination of hands on and lecture and demonstration to keep you engaged.

Please note: We will not cover gardening in containers in depth in this class. If that is your interest, please see Crops in Pots.

 

Session 3: Extended Gardening

Keeping the Garden going for 3 seasons and beyond is the theme of this session. We will cover the importance of Crop Rotation and how to do it. We will learn different ways to succession plant and how it can maximize the harvest. We will address season extension strategies to protect your crops. We will also cover the concept of companion planting and what is true and what is not.

 

Instructor: Patti O'Neal

Price: $35, $30 members

Special Instructions: You can sign up for each individual session, or sign up for all four classes in the series at a discount by signing up for "Amazing Vegetables A to Z Full Series".

 

Amazing Vegetables A to Z: Pests, Problems & Harvesting

Rocky Mountain Gardening Elective

This is the class that will hone your skills as an amazing vegetable gardener. It is designed to take beginners to a new level and remind intermediate gardeners of the success strategies that always work when we go off course and forget the science of what got us to success in the first place. We will cover the science of vegetable gardening, do some myth busting, and provide you with some clear cut strategies to get the biggest harvest from the space you have.

The classes are 2 ½ hours each and are designed so that you can take the entire series or drop in for a refresher on the single class or classes that you want to brush up on. We will use a combination of hands on and lecture and demonstration to keep you engaged.

Please note: We will not cover gardening in containers in depth in this class. If that is your interest, please see Crops in Pots.

 

Session 4: Pests, Problems, & Harvesting

The most common pests and diseases of the vegetable garden will be addressed, how to spot problems before they get away from you and good cultural practices to avoid problems, organics, watering, fertilizing and insect and disease controls. We will also discuss how to know when your veggies are ready for harvest.

 

Instructor: Patti O'Neal

Price: $35, $30 members

Special Instructions: You can sign up for each individual session, or sign up for all four classes in the series at a discount by signing up for "Amazing Vegetables A to Z Full Series".

 

Amazing Vegetables A to Z: Planting

Rocky Mountain Gardening Elective

This is the class that will hone your skills as an amazing vegetable gardener. It is designed to take beginners to a new level and remind intermediate gardeners of the success strategies that always work when we go off course and forget the science of what got us to success in the first place. We will cover the science of vegetable gardening, do some myth busting, and provide you with some clear cut strategies to get the biggest harvest from the space you have.

The classes are 2 ½ hours each and are designed so that you can take the entire series or drop in for a refresher on the single class or classes that you want to brush up on. We will use a combination of hands on and lecture and demonstration to keep you engaged.

Please note: We will not cover gardening in containers in depth in this class. If that is your interest, please see Crops in Pots.

 

Session 2: Planting

Planting is the focus of this session. How to decide what to plan, the seasons of the vegetable garden and getting the biggest bang for your gardening buck. We will cover cool season and warm season plants and the ones that grow best here in Colorado. Then take a look at seed starting and see a demonstration of starting seeds inside and direct sowing outside as well as transplanting. Then we will cover spacing strategies designed to give you the biggest harvest for the space you have available.

 

Instructor: Patti O'Neal

Price: $35, $30 members

Special Instructions: You can sign up for each individual session, or sign up for all four classes in the series at a discount by signing up for "Amazing Vegetables A to Z Full Series".

 

Amazing Vegetables A to Z: The Garden Build

Rocky Mountain Gardening Elective

This is the class that will hone your skills as an amazing vegetable gardener. It is designed to take beginners to a new level and remind intermediate gardeners of the success strategies that always work when we go off course and forget the science of what got us to success in the first place. We will cover the science of vegetable gardening, do some myth busting, and provide you with some clear cut strategies to get the biggest harvest from the space you have.

The classes are 2 ½ hours each and are designed so that you can take the entire series or drop in for a refresher on the single class or classes that you want to brush up on. We will use a combination of hands on and lecture and demonstration to keep you engaged.

Please note: We will not cover gardening in containers in depth in this class. If that is your interest, please see Crops in Pots.

 

 

Session 1: Raised Beds

Planning the best location, choosing in ground or raised beds and the advantages and disadvantages of each. We will look at re-purposing materials to create raised beds. We will cover soil building and choosing amendments. We will build around what has not worked for you in the past and set you on a course for improvement for your 2017 vegetable garden. Every season is a Do-Over!

 

Instructor: Patti O'Neal

Price: $35, $30 members

Special Instructions: You can sign up for each individual session, or sign up for all four classes in the series at a discount by signing up for "Amazing Vegetables A to Z Full Series".

 

Battling the Japanese Beetle

Rocky Mountain Gardening Elective

The Japanese beetle – found in many Front Range areas - is moving to new communities. This unwelcome beetle is concerning home owners with serious damage to plants. Instructor Betty Cahill takes the class through the management options for the Japanese beetle during its adult and larval stages. She provides tips on how to protect your favorite plants, including a plant list that Japanese beetles prefer and mostly avoid.

Instructor: Betty Cahill

Price: $31, $26 member

Beginning Bonsai

Are you mystified by the many centuries old Japanese tradition of bonsai? Join us for an entertaining and informative class with nationally recognized bonsai masters Harold Sasaki and Larry Jackel as they debunk the myths, fictions and misconceptions surrounding this living art form. Each participant receives a tree, pot, wire, soil and gravel in this hands-on experience of creating a finished bonsai, which you can home.

 

** this class sells out very quickly, class size is very small for hands on instruction and attention from instructors, please register early

 

Instructors: Harold Sasaki and Larry Jackel

Price: $105, $95 member, $30 materials fee included

Special Instructions: There will be a break for lunch, please bring lunch or there is a cafe onsite for you to purchase lunch.

 

*instructor change possible due to availability

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.

 

Instructor: Patti O'Neal

Price: $90, $80 members

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

 

Berries and Grapes for the Front Range

Rocky Mountain Gardening Elective

Berries are easy fruits to grow and make luscious-eating whether fresh, frozen or preserved. New developments are increasing the types we can grow here. Come find out the types of berries that do well in our climate and soil, what varieties are recommended, where to purchase and how to manage and prune for best results. Grapes for our area are also discussed.

 

Instructor: Carl Wilson, Denver horticulturist, speaker and retired CSU Extension Agent

Price: $33, $28 members

Best Long Blooming Perennials

Rocky Mountain Gardening Elective

When gardeners dive into the fascinating world of perennials, they are often disappointed to find that, unlike annuals, most perennials only bloom for a few weeks. However some perennials push the envelope. Learn about the long-blooming stars that flower tirelessly for over a month, often much more. Get to know peak performers for spring, summer, and autumn, and for various amounts of sunlight and moisture.

 

Instructor: Lauren Springer is a long-time instructor at DBG and internationally known garden designer, author, and speaker. She designed several gardens at DBG, including the popular WaterSmart Garden, and most recently the new native Visitors Center gardens at Chatfield Farms.

Price: $34, $29 members

Best Roses For Your Garden, New and Overlooked!

Which rose varieties should you grow in your garden? Canadian hardies? Species? Let one of our experienced rosarians with the Denver Rose Society guide you through the palette of choices. You’ll learn the difference between a species and a hybrid tea, and when to pick one over the other. Which climbers do well here, and why? We’ll focus on varieties that thrive along the front range and in the foothills, tempt you with the newest introductions, and share key advice on plant selection and best planting techniques.

 

Price: $31, $26 members

Instructor: Denver Rose Society Consulting Rosarian

 

Contain Those Perennials; But Not Yourself!

Rethink those container gardens! Yes, perennials can be used successfully in containers and provide long lasting color. Find out how to use them and which varieties are best suited for container gardening.

 

Price: $18, $16 member

Instructor: Debi Borden-Miller

 

Debi Borden-Miller worked at Welby Gardens for 28 years as a salesperson and in PR/marketing. She graduated from the University of Vermont with a bachelor’s degree in Plant and Soil Science. Since moving to Colorado from Vermont, she has worked at Fruehauf’s Garden Center in Boulder, Wilmore Nursery and Little Valley Wholesale Nursery before going to Welby.

Debi is currently a board member of the Colorado Garden & Home Show and represents the Colorado Nursery and Greenhouse Association on the management team of ProGreen Expo and serves on several committees of the CO Nursery and Greenhouse Association. She is past president & long-time board member of the Colorado Greenhouse Growers Association, and past president of GreenCo.

Creating a Hobby Greenhouse

Come learn how to take your master outdoor gardening skills to the next level and extend your growing season and increase your green thumb skills. Is the next step in your horticulture experience maintaining a greenhouse? Before building or buying a greenhouse, learn the benefits and the liabilities of owning a greenhouse.

This program covers common questions and ideas surrounding the addition of a season extension structure, such as a greenhouse, to your property. During this session, the location, costs, logistics and practicality of each structure and device will be covered. The course is designed to allow the participant to explore their options with the use of a greenhouse or other season extending structures.

 

Price: $31, $26 members

 

Special Instructions: Please bring paper and pen to write down notes. No experience with greenhouses is needed.

 

Instructor: Thaddeus Gourd attended New Mexico State University where he graduated with a B.S. degree in Pest Management and Horticulture. He earned a Master’s Degree with thesis study in Entomology at New Mexico State University and a Ph.D. in Plant Pathology with emphasis on plant parasitic nematodes at North Carolina State University. Thaddeus has worked over 19 years in the private sector of the plant science business and since 2000, has worked at Colorado State University Extension as an Agriculture Agent and Director for Adams County. He has extensive experience of horticulture, gardening, weed science, entomology, plant pathology and greenhouse management and has been involved in the practice of Integrated Pest Management for over 30 years.

Drip Irrigation for Home Gardeners

Rocky Mountain Gardening Elective

Drip irrigation is easy for home gardeners to purchase and install themselves. It conserves water and solves many awkward plant watering dilemmas around the home. Do you want to grow container plants but dread daily watering chores and arranging for someone to water when you are away? Sprinkler watering of vegetable and annual flower gardens can increase leaf diseases but how do you convert your garden to drip irrigation? Can you create a drip irrigation setup using an outdoor faucet? Answers to these questions and more will be found in this class presented by garden expert and retired CSU Extension Agent, Carl Wilson.

 

Price: $24, $21 member

Instructor: Carl Wilson

Fearless Shrub Pruning

Rocky Mountain Gardening Elective

Learn how to prune both deciduous and evergreen shrubs for long term plant health and appearance in this class. Various types of pruning and the situations where they are appropriate will be illustrated. An emphasis will be placed on flowering shrubs and how to prune them for best bloom. For people with overgrown shrubs, rejuvenation pruning to reduce size and reinvigorate growth will be of interest.

 

Price: $33, $28 member

 

Instructor: Carl Wilson, Denver horticulturist, speaker and retired CSU Extension Agent.

 

 

 

Flower Color - Uses, Meaning and Impact

This class will show you how to use flower color for the most impact. Learn how to use flower colors to affect emotions and create visual interest. Gain information about color combinations for seasonal interest and learn to think about flower color choices differently.

 

Price: $18, $16 member

Instructor: Debi Borden-Miller

 

Debi Borden-Miller worked at Welby Gardens for 28 years as a salesperson and in PR/marketing. She graduated from the University of Vermont with a bachelor’s degree in Plant and Soil Science. Since moving to Colorado from Vermont, she has worked at Fruehauf’s Garden Center in Boulder, Wilmore Nursery and Little Valley Wholesale Nursery before going to Welby.

Debi is currently a board member of the Colorado Garden & Home Show and represents the Colorado Nursery and Greenhouse Association on the management team of ProGreen Expo and serves on several committees of the CO Nursery and Greenhouse Association. She is past president & long-time board member of the Colorado Greenhouse Growers Association, and past president of GreenCo.

Garden Guru Tour

Immerse yourself in the Gardens with a horticulturist as your guide. Gain insight into living museum collections and walk away with gardening tips from an expert. Please note that every tour has its own emphasis and is led by a different horticulturist.

 

Thursday, February 6, 2 p.m.: “Orchids” with Nick Snakenberg, curator of tropical collections and associate director of horticulture

Tuesday, March 24, 10 a.m.: “Spring Garden Preparation” with Dan Johnson, associate director of horticulture, curator of native plants

Friday, June 19, 10 a.m.: “Plant Select®” with Sonya Anderson, horticulture specialist, Plant Select and pollinator gardens

Tuesday, July 7, 10 a.m.: “Annuals” with Bridget Blomquist, horticulture specialist - annuals

Wednesday, July 22, 10 a.m.: “Medicinal Plants” with Blake Burger, horticulture specialist

Tuesday, September 15, 9:30 a.m.: “Fall Garden Preparation” with Mike Bone, curator of steppe collections

 

Price: $17, $15 member

 

Special instructions: Tours can be both indoors and outdoors; dress accordingly for the weather. Water, sunscreen and sunglasses are recommended. Please bring booking confirmation. Meet guide in the lobby of the Boettcher Memorial Center after entering through the Gardens main entrance. Tours are one hour long.

 

Notes: Prices include admission to the Gardens. Tours with low registration are subject to cancellation. These tours are not available for private parties.

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