Whether grown from seed or transplanted as seedlings, native woody species can adapt to changing conditions and challenging environments, benefitting urban communities and rural developments or woodlots by filling in empty spaces and protecting and bringing nutrients back to the soil.

Join dahlia lover and horticulturist Courtney Locke to learn the best methods for growing these stunning gems. We’ll cover all aspects of locating, planting, and growing dahlia tubers, including purchasing, site planning, soil preparation, staking, feeding, pest protection, and (finally!) cutting and enjoying these sumptuous flowers. Learn how to identify the parts of a tuber, the different types of dahlia flower forms, and determine the best fit for your garden. As CMBG’s official dahlia grower, Courtney knows first-hand the exceptional cultivars that produce the jaw-dropping blooms that are truly worth the wait.

In this panel presentation, four CMBG horticulturists will review their top five perennials, from longtime favorites to new darlings from the 2021 growing season. With so many beautiful perennials at CMBG, each showing off unique foliage, flowers, structure, and wildlife benefits at various times of the year, it’s difficult to choose which ones to feature—but these top-20 are a good place to start!

Choosing native plants for your landscape should be fun and creative, not daunting or complicated! When you consider plants in simple groupings, or guilds, it becomes a lot easier to design a landscape with appealing texture, color, and wildlife value throughout the seasons. Native plant guilds draw inspiration from naturally occurring plant communities in habitats like coastal plains, forests, wetlands, or mountain tops. Leave this introductory webinar inspired, with plant lists for various light and soil conditions or landscape functions and the tools necessary for selecting your own plants for beauty and biodiversity.

Whether designing one garden or several, the first step is to understand the history and significance of garden design before diving into its fundamentals. Irene Barber, landscape designer and the Gardens’ Adult Education Program Manager, will introduce students to garden themes from different cultures and civilizations, all of which relate to the principles and elements of design relevant today.

Geography and cultural history are pertinent factors for decisions made in garden design, particularly in New England’s unique and diverse landscapes, from river valleys to rolling fields to narrow, rocky corridors. Students will understand how to establish a sense of place and belonging, wherever their prospective garden is to be located. No matter what cultural elements and influences you want to incorporate, this class will help you get creative while staying true to a sense of place.

Whether as a refresher or a first foray into pruning, students gain confidence in this workshop and demonstration covering pruning fundamentals. Learn to know what, how, and when to prune, even if you’ve attempted it in the past with unsuccessful results, or you've been too afraid to try for fear of damaging your plants. We'll discuss appropriate tools, timing, goals, and techniques to assist you in your dormant pruning projects. Demonstrations will include fruit trees, berry bushes, some semi-herbaceous, and cover the timing for shrubs such as lilacs, rhododendron, and more.

Please note this class requires participants to show proof of having received all eligible Covid-19 vaccinations, as recommended for their age by the CDC, in order to participate. Because of the dynamic nature of this situation, we ask that you agree to abide by potential future changes in CMBG’s Covid-19 policy designed to address evolving public health recommendations.

Beginning a base plan for a plan-view design of your garden may not be the most exciting part of the process, but it is an all-important one! Join us as we discuss everything from how and what to measure for a new garden to translating that information into a scaled drawing on paper. Once a base plan is established, the designer can get creative, tracing over it until they are happy with (and excited about!) their design, the topic of discussion in the next class: Dreams to Design. Students will be responsible for their own design materials, supply list available upon registration.

In this panel presentation, four CMBG horticulturists will review their top five annuals, from longtime favorites to new darlings from the 2021 growing season. With so many beautiful annuals at CMBG, each showing off unique foliage, flowers, and structure, it’s difficult to choose which ones to feature—but these top-20 are a good place to start!

Tuesdays, March 22 and 29 | Countless new terms and often-conflicting advice can make gardening intimidating, not only for newcomers, but also for those who have been gardening for years. In this course, we’ll set gardeners up for success in the potentially overwhelming world of horticulture. Using practical, real-life examples and engaging activities, we'll review how plants are named and classified, basic plant anatomy, and how environmental factors can influence plant growth.

Soils, mulches, and amendments are fundamental for growing plants successfully indoors or out, but it’s easy to become confused, overwhelmed, or unsure. In this webinar, we’ll review what’s what, addressing in-ground and above-ground applications pertinent to vegetable, woodland, or container gardens. We’ll also discuss the variety of manufactured soil and soilless blends, mulches, amendments like composts and mineral additives, the basics of the soil chemistry and biology, and making sustainable choices.

Whether designing a secret garden or an extensive wildflower garden, it’s critical to run an assessment of the setting—built features, where water flows, and how much sun hits the area between growing months. We'll discuss what a site assessment and inventory looks like and how sketching this information gives designers a visual diagram, providing a clearer understanding of any variables to consider. The more informed you are as a designer, the better a designer you’ll be! Students will be responsible for their own design materials, supply list available upon registration.

Orchids are amazing plants—and an engrossing indoor hobby for us northern gardeners. In this fun and enlightening class, learn from CMBG horticulturist Courtney Locke how to successfully grow orchids year-round as houseplants. With so much advice out there, it’s inevitable that confusion would arise. Learn from a true orchid grower and enthusiast, and soon you’ll be on your way to nurturing these intoxicating plants in a variety of arranged containers.

When designing a new garden, it’s tempting to dive right in and start selecting plants – it’s what we plant nerds love best! But we’re doing more than creating a space to show off favorite flowers—we’re creating one that also incorporates and considers circulation, function, character, and scale. Join us as we train our brains and sketching hands, learning how to use graphic and conceptual tools to think bigger about the possibilities of place-making.

From gardening to landscape projects, the right tool makes the process easier, less strenuous, and more efficient. A chef wouldn’t use a butter knife to slice a roast, and a carpenter wouldn’t secure an inch-thick board with a half-inch nail! In this behind-the-scenes look at the CMBG horticulture staff's favorite tools, you'll learn why certain tools are appropriate for certain jobs. We’ll also discuss the more effective and ergonomic options out there—it might be time to replace that splintering, 30-year-old spade you're still using!

Once we’ve got the bigger picture of our garden spaces in mind, we can start shaping them with program and structure. In garden design, structure is more than a row of shrubs, a fence, or a wall at your property line – it’s how you shape a space, create a sense of enclosure, and lead the eye to landscape destinations.

In this session, we’ll look at palette and plant choices, focusing on personal and environmental considerations, and take our design dreams and translate them onto paper. Utilizing the base plans created in an earlier session, we’ll look at the current garden space, visualize what we want it to become, and articulate that onto paper in several conceptual drafts.

Whether you're working on a new garden design or revising an existing space, this final installment of our garden design series will address both the large-scale process and the detailed specifics of your personal design. We’ll work together in a collaborative workshop, presenting and providing constructive feedback on students' unique design efforts.

Choosing native plants for your landscape should be fun and creative, not daunting or complicated! When you consider plants in simple groupings, or guilds, it becomes a lot easier to design a landscape with appealing texture, color, and wildlife value throughout the seasons. Native plant guilds draw on inspiration from natural plant communities in habitats like coastal plains, forests, wetlands, or mountain tops.

Rock garden and alpine plants are wonderful additions to any garden, bursting with fine details particularly suited to up-close viewing. Join us for an introduction to the wide array of rock or alpine plants, their sizes, environmental adaptations, origins, and other horticultural details. Most importantly, students will be guided through the process of planting their own miniature rock or alpine garden using a specially selected garden container they can take home. All supplies provided.

Please note this class requires participants to show proof of having received all eligible Covid-19 vaccinations, as recommended for their age by the CDC, in order to participate. Because of the dynamic nature of this situation, we ask that you agree to abide by potential future changes in CMBG’s Covid-19 policy designed to address evolving public health recommendations.

Whether you’re an experienced fern gardener or you’re interested in getting better acquainted, join horticulturist and Fernwood Nursery owner, Rick Sawyer, out in the Gardens to learn more about these staple Maine beauties. Ferns are truly an essential plant in any New England garden, so if you don’t already have a minimum of five different ferns, then it’s time to join us and decide what new acquisitions to make.

Whether you live in an apartment building, on a suburban lot, or a rural property, this class will get everyone composting! Food waste makes up 1/3 of the trash produced in the average American home, and yet there's so much we can do to prevent this from happening. From indoor vermiculture to outdoor compost bins, you can collect and convert waste into plant-growth gold. Join Don Morrison, Master Gardener and compost aficionado, to learn about the different methods, containers, and materials needed to successfully compost food waste and garden debris. Believe us—there’s a method for every lifestyle!

Please note this class requires participants to show proof of having received all eligible Covid-19 vaccinations, as recommended for their age by the CDC, in order to participate. Because of the dynamic nature of this situation, we ask that you agree to abide by potential future changes in CMBG’s Covid-19 policy designed to address evolving public health recommendations.

This one-day class will cover extensive ground on the insects, diseases, and deficiencies found on plants in the landscape. Applying principles of integrated pest management (IPM), the course will help students identify, monitor, and prevent poor plant health and, when necessary, deal with treatments. State Horticulturalist Gary Fish will emphasize preventative measures and help students determine the methods to mitigate further plant-pest problems.

When selecting landscape plants, flowers tend to get most of our attention. But when flowers start to fade, what’s better than being able to shift our attention to a fabulous foliage display? There are so many options, from a variety of colors and textures to leaf shape and qualities—tiny succulent-like leaves to enormous papery-thin specimens. In this field-study class, Director of Horticulture, Andy Brand, takes students around the Gardens to see and learn all about the features of foliage and their ecological adaptations. Come ready to take pictures because we’re certain you’re about to make your next horticultural discovery, perfect for the garden or woodland.

Please note this class requires participants to show proof of having received all eligible Covid-19 vaccinations, as recommended for their age by the CDC, in order to participate. Because of the dynamic nature of this situation, we ask that you agree to abide by potential future changes in CMBG’s Covid-19 policy designed to address evolving public health recommendations.

Put on your Sunday best, folks, because these plants are dressed to impress! They might be hard to find, hard to grow, or hard to afford, but these? You’ve gotta have ’em—CHOICE perennials that will make you the envy of your local garden club! Come join horticulturist and plant breeder Dan Robarts and explore these maddeningly limited plants—the native, exotic, wild, or advanced hybrids that will dress your gardens to the nines! Sun, shade, wet, or dry, Dan will have his thinking cap (complete with feather) on, espousing the greatness of so many wonderful horticultural selections, you’ll beg him to put a sock in it. They may be elusive, but don’t get a bee in your bonnet. Dr. Robarts will score a true hat trick, with propagation, acquisition, and cultivation tips to make these plants a reality for your gardening endeavors.

Please note this class requires participants to show proof of having received all eligible Covid-19 vaccinations, as recommended for their age by the CDC, in order to participate. Because of the dynamic nature of this situation, we ask that you agree to abide by potential future changes in CMBG’s Covid-19 policy designed to address evolving public health recommendations.

In this field-study class, Jeff O'Donal, nurseryman and conifer grower, will explore the extensive world of conifers, including native and non-native species, specimen plants and those great for naturalizing into our native landscapes. Diverse, conifers grow in all sorts of shapes and sizes, and the needle species offer so many options: variations of gold and blue, soft or coarse textures, varieties of needle lengths, deciduous or evergreen, fragrant or neutral—there’s something for every style and landscape, from gardens to containers.

Our gardens and gardening practices are intrinsically tied to nature. This class will guide students through the best design and management strategies that work in unison with nature, encouraging and embracing biodiversity and sustaining healthy, low-maintenance gardens. Anna Fialkoff, Program Manager at Wild Seed Project, offers an overview of plant selection and processes for achieving beautiful gardens requiring minimal manual labor.

What exactly is a specimen tree? Good question! Specimen trees are trees that fulfill specific garden design goals, such as providing focal features, provoking emotional responses, or contributing to specific themes, just to name a few. The trees can be small, large, narrow, or broad, cascading or twisted in habit, or provide foliar accents in an otherwise monochromatic setting. In this class, landscape designer and horticulturist Irene Barber will take students on a landscape-design tour around the Gardens to learn about specimen trees to consider adding to a new or existing garden back home.

Please note this class requires participants to show proof of having received all eligible Covid-19 vaccinations, as recommended for their age by the CDC, in order to participate. Because of the dynamic nature of this situation, we ask that you agree to abide by potential future changes in CMBG’s Covid-19 policy designed to address evolving public health recommendations.

Join Andy Brand, the Gardens’ Director of Horticulture, on a walk to identify native edible plants living in their desired natural habitats, then learn how to incorporate these edibles into your home garden. Rather than foraging, this class focuses on the opportunity to grow these native edibles sustainably at home, leaving the foraging to the wildlife who need these plants for survival.