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Prior to Workshop -
- Each registrant should read the attached Guidelines for Listing, Categorizing and Sharing Information on Plant Taxa Spreading from Cultivation at Public Gardens in North America (Guidelines).
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Available to Members only.
Since the Ontario Cosmetic Pesticide Ban of 2009, Royal Botanical Gardens (RBG) had struggled to maintain its Rose Garden to world class standards. Ontario's 2017 sesquicentennial celebration afforded the perfect...
Emerald ash borer (Agrilus planipennis) was first discovered in southeastern Michigan in 2002. Accidentally introduced on solid wood packing material from Asia, EAB has since spread to nearly all states within the native North American range of its...
Ash tree species in North America are under mortal threat from the Emerald Ash Borer (EAB), now in 35 states and five Canadian provinces. There are ongoing efforts to conserve this native tree species by producing genetically diverse, resistant...
Six elements are required in small amounts for the growth and development of plants. These are referred to as micronutrients: iron (Fe), manganese (Mn) copper (Cu), zinc (Zn), molybdenum (Mo), and boron (B). Only two of these, iron and manganese, are...
Needlecast and needle blight are terms applied to a variety of foliage disorders of many coniferous species. These diseases are usually more severe on young trees or on trees growing outside of their natural range. Disease severity and corresponding...
Sonic tomography, or the use of sound waves to detect decay in trees, is a relatively new technology available to arborists. This technology uses the differential speed of sound as it moves through solid wood, decayed wood, or hollow space to create a...
The horticultural trade relies on healthy plants to flourish. However, its very nature
means that it is also a key pathway for the introduction and spread of plant pests and diseases.
These pests and diseases threaten horticultural...
European ash is a significant tree commercially, ecologically, and culturally. It is currently
threatened by two invasive species, the fungus that causes ash dieback and
the emerald ash borer (EAB) beetle. We show that saplings of...
Oak decline is a slow-acting disease complex that involves the interaction of biotic and abiotic factors such as climate, site quality and advancing tree age. Oak decline occurs more commonly among red oak species, but white oaks are susceptible as...
Fall is a beautiful and often very busy season for Gardens and Arboretums, with many guests visiting to enjoy cooler weather, Fall colors, and other seasonal events. Fall is also a busy season for staff working outside in preparing the landscape for...
Interception of potential invasive species at ports-of-entry is essential for effective biosecurity
and biosurveillance programs. However, taxonomic assessment of the immature stages
of most arthropods is challenging; characters for...
Ice or snow loads can cause branch breakage or failure of entire trees and shrubs. Branches or entire trees that fall in storms can impact homes, vehicles, power lines and block roads. After a storm, the first priorities are safety and restoration of...
- Many exotic plant pests and pathogens are unknown prior to their establishment, making prevention and management difficult.
- Sentinel plantings to detect pests and pathogens prior to introduction provide information about the likelihood ...
The invasive hemlock woolly adelgid (HWA) has decimated hemlock stands across much of the eastern United States, and presents a significant threat to all eastern hemlock in Canada across Ontario, Quebec, New Brunswick, Nova Scotia, and Prince Edward...
Insect and disease infestations pose major threats to several North American forest tree species.
Scientists and managers from throughout the United States Forest Service developed a conservation priority-setting framework for forest tree...
Urban trees serve a critical conservation function by supporting arthropod and vertebrate communities but are often subject to arthropod pest infestations. Native trees are thought to support richer arthropod communities than exotic trees but may also...
Sunflower is a unique model species for assessing crop responses and adaptation to climate change. We provide an initial assessment of how climate change may influence the abiotic and biotic environment of cultivated sunflower across the world. We find...
The purpose of this document is to assist anyone planning and programming the management of invasive species on islands, with the aim of reducing the negative impacts of invasives on islands’ rich and fragile natural heritage, communities and...
The Plants for Planting Manual provides the background, procedures, and reference tables for regulating imported material of plants and vegetative parts that are for or capable of propagation, including buds, bulbs, corms, cuttings, layers, pollen,...
