Events/Educational Programs

January 20, 27 and February 3, 10 – Class: History and Principles of Landscape Design. Presented by Staci Jasin; 1:00 – 4:00 pm EST. As horticulturists and landscape designers, we need a strong foundation in the cultural history and theory of landscape to fully understand our work in the garden. In this course, we will explore Eastern and Western garden design, including long-practiced principles that encourage sustainable and ecological approaches in the landscape design field. This history survey will include visual presentations, readings, projects, and discussion. Read more and register.

January 6 and February 2 – Uh-Oh . . What;s That? A Pest & Disease Survival Guide. 7-8 PM via ZOOM. Diseases – What is a plant disease? How do I know if what I see are signs or symptoms? What’s causing this? How does the weather factor in? Do we need to spray, or can we avoid plant diseases? Nancy Gregory equips us with the information we need in our garden toolbox. UDBG Members: $15/class; $50 for series. Nonmembers: $20/class; $70 for series (Diseases and Insects). To register and pay for classes via our online form CLICK HERE or call (302) 831-2534 or email to register

January 28 & February 4 – Uh-Oh . . What;s That? A Pest & Disease Survival Guide. 7-8 PM via ZOOM. Pests – Scouting for insect pests is an important part for successful IPM in horticulture, so what do you look for?  Join Dr. Brian Kunkel as we cover how plants normally look compared to plants with issues.  We will also discuss the presence of insects that require little intervention compared to those that need a strong management plan UDBG Members: $15/class; $50 for series. Nonmembers: $20/class; $70 for series (Diseases and Insects). To register and pay for classes via our online form CLICK HERE or call (302) 831-2534 or email to register

January 26 – RESEARCH INTO LANDSCAPE. Steven Handel & Larry Weaner. 1-4:30 PM. Ecologists at universities, professional societies, and other scientific institutions commonly engage in research to better understand how plants operate in the wild. Unfortunately, landscape designers rarely access the resulting data or use it to enhance their projects. In this presentation, ecologist Stephen Handel and landscape designer Larry Weaner will present detailed case studies where research data was directly applied to the planted landscape. Examples will vary in scale from restoration to residential, and illustrate the concrete benefits that can be derived when designers seek out information from the highly relevant world of ecological restoration. $78. To register:

January 26 – Dealing with Drought: A Workshop for Landscapers, Gardeners and Property Managers, 6:00pm – 8:00pm. Webinar: The drought of 2020 will have long term impacts on the health of landscape plants, trees and shrubs. This webinar will discuss the effects of drought on plants and will give strategies for managing and adapting to drought in the landscape. Cost – $20. Register This webinar will include:

• Applied approaches to drought management in urban landscapes- Dr. Raul Cabrera, Extension Specialist in Nursery Production & Management, Rutgers University

• Legal issues of taking water for landscape use- Ted Diers, Watershed Management Bureau Administrator, NH Department of Environmental Services

• How drought affects plants- Dr. Muhammad Shahid, Greenhouse & Nursery Production State Specialist/Extension Associate Professor, University of New Hampshire

• Drought: Charting the environmental factors- Dr. Cheryl Smith, Plant Health State Specialist, University of New Hampshire

• Moisture sensing technology and its use in irrigation- Jeremy Delisle, Fruit & Vegetable Production Field Specialist, University of New Hampshire

• Selecting drought tolerant plants for NH landscapes- Emma Erler, Education Center Program Coordinator, University of New Hampshire

January 27 – Webinar: Expanding Biodiversity  Attracting Birds to Your Yard. Presented by Becky Laboy, 12:00 – 1:00pm EST. As a long-time birding enthusiast, Becky Laboy is passionate about creating bird-friendly landscapes. Her passion for birds dovetails nicely with Becky’s other passion, native plants. Native plants are the key to attracting birds. Native plants provide the food, shelter, and nesting places essential to the survival of birds. In this presentation, Becky will discuss different plant species native to the “northeast” that are appropriate for back (and front!) yards, and will point out the many ways these species provide essential services to birds. Read more and register.

January 27 – Common Invasive Plants and how to get rid of them, 12-2 ET. There are 3 presenters in the webinar: Common invasive plants and how to get rid of them: Andrew Rorhbaugh, Botanist, Pennsylvania Department of Conservation & Natural Resources, Bureau of Forestry; Assessing and Prioritizing Natural Areas for Invasive Species Management and Restoration Erin Stockschlaeder, Ecologist/Natural Capital Protection Program Manager, Fairfax County Park Authority; and Incorporating Invasive Species in Natural Resources Decision Making Ryan Colliton, Principal Natural Resources Specialist – Vegetation Ecologist, Montgomery Parks. Zoom Passcode: 691138

January 27 – March 24 – Winter Gardening Webinar Series,  6-7PM ET, hosted by University of ME and University of NY Extensions. Topics include pruning, Indoor lighting, Garden design and more.

January 29 – Get Ready for Spring Greenhouse Program, 8:30-12noon, fee. Every season comes with its own challenges. Join them for a virtual education program that will provide you with updates and tips for managing pests in spring greenhouse crops. Topics are: Pesky Pythium, Pest Management Update and Using BioPesticides to manage greenhouse pests.

February 3 – Webinar: The American Oaks – Diversity, Ecology, and Identification Presented by Tim Boland; 12:30 – 1:30pm ESTJoin Tim Boland to learn about the great diversity of oaks found throughout North America and locally in New England. He will paint a picture of the genus Quercus, including its fascinating evolutionary history and moving forward in time will address challenges posed by climate change. He will also illuminate the deep connection oaks have to humanity across the world, and explain why they are widely considered to be the ecological glue that holds plant communities together. Read more and register.

February 1 – February 22 – Online Class: NGICP National Green Infrastructure, Presented by Trevor Smith, 35-Hour Class – Offered on 7 Afternoons 12:00pm-5:00pm EST, Monday 2/1/21, Wednesday 2/3/21, Monday 2/8/21, Wednesday 2/10/21, Monday 2/15/21, Wednesday 2/17/21, and Monday 2/22/21. Learn Stormwater Solutions – Expand Your Opportunities. Designed to meet international best-practice standards, the certification advances the establishment of sustainable communities by promoting Green Infrastructure (GI) as an environmentally and economically beneficial stormwater management option, supporting the development of proficient green work-forces, and establishing a career path for skilled GI workers. The program provides the foundational understanding needed to properly design and oversee construction, inspection, and maintenance of green stormwater infrastructure. This program provides candidates with the technical skills necessary to successfully incorporate GI into projects. LA CES and NOFA CEUs. Read more and register.

February 2 – March 30 – Plant Production Lunch and Learn webinar series, fee; The UNH Cooperative Extension Landscape and Greenhouse Team is hosting a “Plant Production Lunch and Learn” webinar series (nine webinars – for further detail visit the link below). You can attend as many or as few as you like. Register and select the sessions you would like to attend. You will receive an email with a link to the webinar.

February 4  – Ecology-Based Landscape Design – for Eastern & Midwestern U.S.An Intensive Course. FOUNDATIONS OF ECOLOGY-BASED DESIGN Larry Weaner *Recommended prerequisite for Days 2, 3, & 4 (2/11, 2/18, 2/25) .  Our opening presentation will examine the vegetative patterns and ecological processes of spontaneous plant communities. Each characteristic will be followed by an example of its direct incorporation into a landscape project. Processes described will include disturbance, competition, vegetative pattern, ecological succession, and ecological stability. Ecological plant traits will include habitat fidelity, growth pattern, spatial and temporal niche, and proliferation strategies. 1:00 – 4:30 PM. 4-Day Bundle: $295 | Individual Days: $88. To register:

February 5 and 12 – Class: Garden Design for Child Development, Presented by Staci Jasin, 10:30 – 1:30pm EST. Whether in a home setting or a schoolyard habitat, children’s gardens require not only an understanding of basic landscape design but also special consideration of the development of children for their safety, engagement, and socialization. In this class, you will learn how to design a children’s garden that appeals to all five senses, evokes playfulness and learning, and instills a love of nature that will grow into stewardship and environmental sensitivity. Read more and register

February 7, 14, 21 – Class: Plant Nutrients, Presented by George LoCascio,  10:30 – 12:00pm EST. What are mineral nutrients and how do plants use them? What are the signs of deficiencies and toxicities? In this course, you will learn some mineral nutrient foundations through an overview of soils, chemistry, and plant anatomy. We will explore how plants acquire, use, and translocate mineral nutrients. We will also learn skills to identify how mineral nutrients are impacting a plant’s health and how to remedy plants suffering from improper nutrition. Read more and register.

February 8 – Webinar: Regenerative Design – How Living in Agreement with Nature Helps Organizations Thrive, Presented by Claude Stephens, 1:00 – 2:00pm EST. Human impact on planet earth is at least three million years deep but it wasn’t until the advent of agriculture some 11,000 years ago that the ways we conduct our daily living began creating dramatic shifts in the biological functions that sustain us. This program will explore how adapting an ecological framework that acknowledges biological limits supports healthy design. By living in agreement with nature we can create better stories, more sustainable economies, and stronger community relationships. Read more and register.

February 10 – FOSTERING SPONTANEOUS REGENERATION OF NATIVE SPECIES: RELEASING THE POTENTIAL with Daniela Shebitz, Emile DeVito, Kelly Gutshall, & Justin Spangle. Part One | A New Jersey Pine Barrens Case Study – Daniela Shebitz, Emile DeVito. 1 – 4:30 PM. Through this presentation, we will discuss how in communities without invasive species, restoring a natural hydrological or fire regime can be enough to foster spontaneous native species regeneration from existing plants and seed banks. We will illustrate how native wetland communities were restored, without planting, on a series of retired cranberry bogs. Atlantic white-cedar (Chamaecyparis thyoides) swamps were used as a reference site, and we found that all sites where natural systems were re-established were recovering strong native plant communities, regardless of the level of previous disturbance and restoration activities. Part Two | Restoring Floodplains and Releasing the Hidden Seed Legacy – Kelly Gutshall, Justin SpanglerOur seemingly pristine streams and woodlands are teeming with clues of the dramatic alterations that resulted from massive deforestation and a dependence on a water powered industrial past. Before restoring our streams and floodplains, we must understand how this legacy continues to challenge our water resources with issues we are facing today… flood resiliency, water quality, and biodiversity. These challenges also offer opportunities for spontaneous regeneration of threatened and endangered species of plants and harbor animals dependent on these sensitive ecosystems. $78. To register:

February 10 – Webinar: Oak Red-List Project – Main Threats to Oaks and Saving Oaks from Extinction, Presented by Murphy Westwood,  12:30 – 1:30pm EST. Oaks are sometimes referred to as the “tree of life” for providing food and shelter for a multitude of wildlife species. Murphy Westwood, director of global tree conservation for The Morton Arboretum in Illinois, refers to oaks as the “kingpins in the forest.” But today oaks are in trouble. Dr. Westwood will discuss the economic, ecological, and cultural value of oaks, and will explain the threats each species faces and the conservation efforts underway to save them, including the establishment of the Global Conservation Consortium for Oak, a recent global initiative to coordinate conservation efforts across sectors and regions to ensure no oak species goes extinct. Read more and register

February 11 – Ecology-Based Landscape Design – for Eastern & Midwestern U.S.An Intensive Course. THE OPEN LANDSCAPE: MEADOWS, OLD FIELDS, & SHRUBLANDS. Larry Weaner. 1:00 – 4:30 PM. While meadows are in high demand, effective protocols for designing and implementing them are in short supply. Here we will delve into the nitty gritty of meadow design: site analysis, species selection, seed mix formulation, live plant inclusion, planting and management. The inclusion of shrub thickets and drifts will also be covered, including the arrangement of clonal vs. clump forming species, and the use of shrublands as ecological and visual “connective tissue” between meadow and woods. $88. To register:

February 12 – NURSERY TO DESIGN: PLANT PURCHASING AND SITE LAYOUT FOR NATIVE LANDSCAPE PROJECTS with Bob Swain, Jim MacKenzie, & Bill Carter. 1 – 4:30 PMThe ecology-based landscape movement is slowly changing the way plants are being grown, procured and planted. This includes alterations in species, propagation technique, size, packaging, site layout, and the expanded use of seed. In these presentations a nursery grower, seed producer, and landscape contractor will illustrate what designers and planters need to know about new developments in how to handle plants and seeds before and after arriving at a project site. $78. To register:

February 14 – “Prairie-Side Chats”  (PART 3) GEROULD WILHELM, PH.D.:INTERVIEWED BY LARRY WEANER. 1-2:30 PM.  Dr. Wilhelm is one of America’s foremost botanists. He co-authored the definitive volume, Flora of the Chicago Region (2017), developed the widely used “Floristic Quality Assessment” method for plant community analysis, founded the innovative non-profit “Conservation Research Institute,” and performed innovative research on the relationships between cultural practice and landscape ecology. His academic accomplishments are complemented by the many projects he shepherded to fruition as a principal with the pioneer landscape architecture firm Conservation Design Forum in Lisle, Illinois. Dr. Wilhelm’s sharp intellect, nonconformist perspectives, and vast field experience are sure to produce a stimulating, enlightening, and even paradigm-altering session.
$38. To register:

February 16 – Waiting in the Wings: Trees and Shrubs Trying to Break into the Biz. 7-8 PM via ZOOM. Today’s Garden Stars get top billing for many reasons—proven performance, widespread acclaim, and sometimes just name recognition.  However, we should not overlook the unsung talent ready to tackle the same roles and dazzle even the most jaded plant lovers.  Jason Veil, curator of Ohio State University’s Secrest Arboretum talk will highlight a cast of not-so-famous horticultural understudies that deserve a shot at the big time. UDBG Members: $10, Nonmembers: $15. To register and pay for classes via our online form CLICK HERE or call (302) 831-2534 or email to register

February 16 – FIRE AND THE LANDSCAPE: SAFETY, ECOLOGY, AND CULTURAL PRACTICE Eric Knapp & Margo Robbins. Applicable regions: Western and Southwestern US. 12 – 3:30 PM. Part One | Living With Fire – Eric Knapp Ecologist Eric Knapp will discuss redesigning the near-home landscape to improve the odds of wildfire survival based on his recent analysis of why some homes burned, and some didn’t during the “Camp Fire” wildfire in Paradise, California. He will demonstrate how designers can use plant selection, plant arrangement, prescribed burning, and other approaches to avoid denuding the landscape in the name of fire safety. Part Two | The Benefits of Cultural Fire – Margo Robbins As Co-Founder and Executive Director of the Cultural Fire Management Council (CFMC), co-lead for the Indigenous People’s Burn Network, and Yurok tribal member, Margo Robbins is uniquely positioned to demonstrate the benefits of fire as a land restoration tool, and how controlled burns can help protect communities from wildfire. In this presentation she will show how a community group in northern California brought fire back to the land in a highly positive way. $78. To register:

February 16 – Winter Turfgrass Webinar Series – Second Session. Online program from 10 AM to 12 noon. Fee: $15. Nutrient Management and Pesticide Applicator credits will be offered. Register at

February 18 – Bowman’s Hill Wildflower Preserve’s 21st Annual Land Ethics Symposium. 8 AM – 1 PM. Come celebrate the 21st year of this not-to-be-missed symposium geared towards landscape architects, designers, contractors, land planners, municipal officials and homeowners. The symposium’s focus: how to create ecologically sound and economically viable landscapes through the use of native plants and sustainable practices. This year, expect lively dialog on topics ranging the restoration of the American chestnut to the future of urban park design. Continuing education credits will be available .2021 Speakers include: Dr. Bill Powell — SUNY College of Env. Sci. and Forestry, American Chestnut Research & Restoration Project; Tom Smarr — Executive Director of Jenkins Arboretum,The Future of Urban Parks: The Challenges of
Responsible Design & Management;
Tim Majoros — Pennsylvania Horticulture Society
The Navy Yard: A Philadelphia Redevelopment Success Story; Baldev Lamba (panel moderator) — Temple University, Panel: The Intersection of Ecology and Art in Landscape Design. Bowman’s Hill Wildflower Preserve <>

February 18 – Ecology-Based Landscape Design – for Eastern & Midwestern U.S.An Intensive Course. THE CANOPIED LANDSCAPE: WOODLANDS, EDGES, AND HEDGEROWS. Larry Weaner. 1:00 – 4:30 PM. Establishing woodlands is as much the design of a process as a planting plan. Guided succession can foster the orderly transformation from an open field to a multi-tiered forest through planting, managed natural recruitment, or a combination of the two. Under existing canopy, where few herbaceous species can be established through direct seeding, we will discuss the planting of small “seed source colonies,” and the management strategies that can encourage their proliferation into the larger landscape. Field techniques that are unique to woodlands such as selective height mowing, sunlight manipulation, assisted seed dispersal, and others will also be described in detail. $88. To register:

February 25 – Ecology-Based Landscape Design – for Eastern & Midwestern U.S.An Intensive Course. THE PLANTS: MEADOWS, SHRUBLANDS, & WOODLANDS Ian Caton & Larry Weaner. 1:00 – 4:30 PM. In this session, native plant authority Ian Caton will examine some of the native species that exemplify the ecological characteristics described in the previous sessions, and illustrate how this information can inform the process of selecting and arranging individual plants. He will also present a group of “workhorse species” that combine reliability and weed suppression with attractive aesthetic character. Larry and Ian will then engage attendees in a conversation that explores their shared experiences and answer attendee questions. Larry will conclude by describing the heightened experience that an interactive relationship between people and plants can engender for both designers and their clients. $88. To register:

March 5 – NATIVE GREEN ROOFS: NATURAL APPLICATIONS FOR ARTIFICIAL CONDITIONS with Ethan Dropkin & Laura Hansplant. 1 – 4:30 PM. By drawing inspiration from plant communities with similar conditions, we can create green roofs that are ecologically complex, highly resilient, and provide significant ecological benefits. Maintenance requirements, typically high on traditional roof gardens, can also be reduced. This session will use case studies to illustrate ecological, horticultural, and engineering techniques for designing green roofs as high-performing elevated habitat. $78. To register:

March 10 – Part One | Specifications for Restoration-Scale Projects – Rebecca Kagle, Andrew Korzon. 1 – 4:30 PM. Many ecology-based field techniques run counter to traditional practices and are unfamiliar to even highly experienced contractors. Consequently, highly precise specifications are crucial. This presentation will cover the documentation of field procedures unique to ecological design and restoration such as phased planting, meadow seeding, and weed control procedures. We will also discuss organizational formats for specifications that distinguish between short-term and long term management and balance the need for both detail and usability. Part Two Reconstructing Tallgrass Prairie in Urban and Suburban Spaces: Two Case Studies – Scott Woodbury Tallgrass prairie reconstruction from seed on damaged urban and suburban soil is a practice poorly understood by most landscape personnel. A seeding specification can lay out a blueprint for planning, site preparation, installation and maintenance, but it is dependent on an engaged and informed team of people, from leaders to weeders. Seeded landscapes are so complex that simple mistakes can be made that result in significant setbacks or failure. This session will focus on how to plan, implement, and manage successful commercial seeded projects. $78. To register:

March 15 – “Prairie-Side Chats” (PART 4) DARREL MORRISON, FASLA:INTERVIEWED BY LARRY WEANER.  1-2:30 PM.  As a longtime leading proponent of native landscape design, Darrell Morrison has had a profound influence on countless landscape architects and designers. His former students from the state Universities of Wisconsin and Georgia, to Columbia University have fanned out across the country to multiply that influence. He has also designed some of America’s most notable ecology-based projects including at the Lady Bird Johnson Wildflower Research Center in Austin, Texas, The Brooklyn Botanic Gardens, and the now iconic grasslands at The Storm King Art Center in New Windsor, NY. $38. To register:

Longwood Gardens offers many continuing education classes appropriate for the nursery and landscape industry.  To see their offerings, visit

Mt Cuba Center offers lots of great classes for gardeners and professionals.  To see their offerings visit







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