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Best Classes & Workshops
in Seattle
Instructor: Bess Bronstein
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Japanese Garden Pruning
UW Botanic Gardens @ Virtual Classroom
This class will cover pruning Japanese upright maples (fan pruning), Japanese laceleaf maples (shell pruning), pruning pines (cloud pruning) and shearing masses of lower story plants. This lecture series is designed for those who work in landscape maintenance. Each lecture provides information on tools and techniques for quality pruning with better long-term results and customer satisfaction.
$35
Foliar Pests and Diseases
UW Botanic Gardens @ 2300 Arboretum Drive E, Seattle, WA
This class will introduce you to common foliar pests and diseases often seen in spring in the Pacific Northwest, including rusts, mildews, anthracnose, bacterial blights, tent caterpillars, mites, lacebugs, root weevils, and aphids. Plant Health Care (PHC) approaches to management, including acceptable Integrated Pest Management (IPM) methods will be covered. The course will include field diagnosis practice, as well as an indoor lab session for everyone...
$125
Conifer Pests and Diseases
UW Botanic Gardens @ 2300 Arboretum Drive E, Seattle, WA
This session will focus on insect pests and diseases that impact the health of landscape and native conifers in our region, including rusts, twig and needle blights, needle casts, scales, adelgids, bark beetles, and moths. We will examine samples in the classroom and the field. Plant Health Care (PHC) approaches to management, including acceptable Integrated Pest Management (IPM) methods will be covered. We will do diagnosis practice both in the...
$125
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All About Conifers
All About Conifers: Tree Identification, Management and Landscape Use Conifers provide the structural framework for many gardens, serving as specimen trees, focal points, screens, and hedges. Unique growth habits along with contrasts of foliage color and texture can provide year round interest in any size garden. In the dark days of winter a golden cypress can light up the garden with colorful foliage, and a prostrate weeping hemlock can soften...
Plant CSI: Leaf Spots, Curl, Galls, and Holes
UW Botanic Gardens @ 2300 Arboretum Drive E, Seattle, WA
Plant CSI: Leaf Spots, Curl, Galls, and Holes - Foliar Pests & Diseases Become a Plant Crime Scene Investigator (CSI)! Learn about key plant diseases and insect pests that can cause problems for favorite trees and shrubs in the landscape. Why does it seem like overnight your favorite shrubs and trees get so many leaf spots? Should your kinnikinnick leaves be so thick, curly and red? And what insect is eating your rhododendrons and azaleas?...
$70
Plant CSI: Cankers, Conks, and Rots - Decay Pathogens
UW Botanic Gardens @ 2300 Arboretum Drive E, Seattle, WA
Learn how to identify and manage fungal decay diseases that affect native tree species in the Pacific Northwest. Gain essential skills in recognizing decay pathogens for proper tree health assessment and structure evaluation. Discover effective Plant Health Care (PHC) approaches and Integrated Pest Management (IPM) methods for disease management.
$70
Fruit Tree Pruning
UW Botanic Gardens @ 3501 NE 41st St, Seattle, WA
Learn the basics of fruit tree pruning. Covers apple, cherry, plum, and pear trees. This lecture series is designed for those who work in landscape maintenance. Each lecture provides information on tools and techniques for quality pruning with better long-term results and customer satisfaction. This class takes the confusion out of pruning common fruit trees.
$35
Shrubs III: The Puzzlers and Consequences
This class teaches us how to prune rhododendron, hydrangea, callicarpa, Viburnum bodnantense and abelia. Included in this two-hour slideshow are basic pruning techniques techniques, common pruning mistakes and corrective pruning. This lecture series is designed for those who work in landscape maintenance. Each lecture provides information on tools and techniques for quality pruning with better long-term results and customer satisfaction....
Plant CSI: What Happened to My Flowering Cherry Tree?
Become a Plant Crime Scene Investigator (CSI)! Learn about key plant diseases and insect pests that can cause problems for favorite trees and shrubs in the landscape. There is nothing quite as exciting as a flowering cherry tree (Prunus spp.) beginning to bloom after a long cold winter. So it is quite disappointing to see flowers and leaves start to suddenly wilt, or oozing from cankers on the stems and trunks. Prunus species and varieties are...
Plant CSI: Why Does my Japanese Maple Look so Bad?
Become a Plant Crime Scene Investigator (CSI)! Learn about key plant diseases and insect pests that can cause problems for favorite trees and shrubs in the landscape. Japanese maples (Acer palmatum) are wonderful specimen trees in the landscape, showing off many form and color variations. Yet often stems will die back, and sometimes even large limbs or an entire tree will die. It sometimes appears to happen overnight! This online course...
Tree Pruning I
This is a two hour slideshow on tree pruning (not including fruit or nut trees). How to prune a tree limb will be covered, including branch collar identification and the basics of compartmentalization. Also discussed--early training of trees, included bark, double leaders, ANSI tree pruning standards, crown cleaning, crown raising, utility line clearance pruning, mature tree pruning. Mal-pruning will be shown and defined (tree topping, lion's tailing,...
Tree Pruning II
Beyond basic tree pruning is a world of related tree information which is not generally known to the public. This class presents the basics of Hazard Tree Evaluation (same as Risk Assessment), construction damage to trees, and rehabilitative pruning for previously mal-pruned trees. This lecture series is designed for those who work in landscape maintenance. Classes last two hours and are held on Tuesdays. Each lecture provides information...
Shrub Pruning III
This class teaches us how to prune rhododendron, hydrangea, callicarpa, Viburnum bodnantense and abelia. Included in this two-hour slideshow are basic pruning techniques, common pruning mistakes and corrective pruning. This lecture series is designed for those who work in landscape maintenance. Classes last two hours and each lecture provides information on tools and techniques for quality pruning with better long-term results and customer...
Conifer Pruning
This is a two hour slideshow on conifer pruning. Conifers play by different rules than their flowering friends. This class will cover timing and where to make cuts that will help conifers stay vibrant. Taught by Bess Bronstein This lecture series is designed for those who work in landscape maintenance. Classes last two hours and each lecture provides information on tools and techniques for quality pruning with better long-term results and customer...
Plant CSI: What's Wrong with my Apple Tree?
UW Botanic Gardens @ Virtual Classroom
There is nothing better than taking the first juicy bite of a delicious apple picked right off of the tree. But then you notice the holes and dark areas on the fruit, and spots on the leaves, and the bark seems to be peeling off. What’s happening? This course will cover common insect pests and diseases of apple trees, including apple scab, apple anthracnose, powdery mildew, nectria canker, codling moth, apple maggot, aphids, tent caterpillar and...
$35
Plant CSI: What's Wrong with my Conifer?
UW Botanic Gardens @ Virtual Classroom
This course will help you identify common conifer diseases and insect pests including rusts, twig and needle blights, needle casts, adelgids, and moths. Why is your juniper turning brown? Should that pine have orange needles? And why does my hemlock look like it has been covered in lint? There are a number of common insect pests, diseases and abiotic problems that impact the health of both native and landscape conifers in our region. This course...
$35
Plant CSI: Diagnosing Plant Problems in the Autumn
UW Botanic Gardens @ 2300 Arboretum Drive E, Seattle, WA
Plant CSI: Diagnosing Plant Problems in the Autumn Landscape Autumn provides us with the opportunity to look at overall plant health as temperatures cool, leaves change color and fall, and the days shorten. In particular, we can often see signs of tree and shrub decays as well as overwintering insect pests that are not present at other times of the year. This is also a great time to work on management techniques to help prevent a repeat of some...
$35
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