Horticulture Classes

Develop the vital skills needed to protect and manage landscapes, maintain healthy trees, design attractive gardens, and produce landscape plants. Many horticulture students start their own businesses or pursue rewarding careers in a breadth of areas, including landscaping companies, nurseries and garden centers, public parks, botanical gardens, and private estates. Enroll in a single class or pursue a Horticulture Certificate.

Click here for an overview of the Certificate Program.


October

This class will take place online. Registered students will receive login instructions.
Designed for students who want a user–friendly introduction to plant science, this course surveys the major groups of plants—flowering plants, conifers, ferns, and bryophytes—focusing on plant more...
222HRT300CO 10/23 Sa 10:30am-12:30pm Paradiso
ONLINE

Through course study and hands-on pruning, you will learn the best tools, techniques, and timing to use when you prune to help shrubs, conifers, broadleaves, evergreens, and deciduous plantsthrive. Explore how woody plant structure andphysiology influence pruning. You'll learn how more...
222HRT321B 10/26 Tu 10:00am-1:00pm Logan
NYBG

Note the "Location" of each section, as we have in-person and online options. Price differences may apply. Confirmation emails contain specific class instructions.
Explore how to create a healthy garden while supporting biodiversity and conserving resources. We'll discuss ways more...
222HRT395A 10/30 Sa 10:00am-12:00pm Conaway
NYBG

November

This lecture will take place online. Registered students will receive login instructions.
Oaks support more species of life than any other tree genus in North America, sustaining everything from acorn-collecting woodpeckers to caterpillars that dazzle like jewels. In more...
222HRT817O 11/02 Tu 11:00am-12:00pm Tallamy
ONLINE

This class will take place online. Registered students will receive login instructions.
Study the entire cannabis growing cycle, including best practices for critical harvest and post-harvest procedures, and how artificial lighting and carbon dioxide enrichment can help maximize more...
222HRT156AO 11/03 We 6:00pm-8:00pm DeBacco
Crosson
ONLINE

This class will take place online. Registered students will receive login instructions.
Join the cut flower farming revolution! Discover the basics of how to design, plant, grow, and harvest a cutting garden that will be productive throughout the more...
222HRT142AO 11/04 Th 6:00pm-8:00pm Breyer
ONLINE

This class will take place online. Registered students will receive login instructions.
Graphics are essential in developing and communicating your ideas. Practice various graphic techniques on a range of materials and equipment and learn how to organize and more...
222LAN311A 11/09 Tu 6:15pm-9:15pm Poccia
ONLINE

December

This class will take place online. Registered students will receive login instructions.

As urban populations expand and access to arable land and potable water shrinks, agri-entrepreneurs are turning to innovative systems to grow food indoors without soil-aeroponics, aquaponics, more...
222HRT155AO 12/09 Th 6:00pm-7:00pm Yurgalevitch
Mejia
Amu
DeBrota
ONLINE

Horticulturist Wambui Ippolito shares how immigrants from all over the world have brought beloved plants with them to the United States-from Spaniards and Hungarians who introduced grapes for viticulture to enslaved Africans whose rice seeds and agricultural expertise were appropriated more...
222HRT818 12/10 Fr 11:00am-12:30pm Ippolito
NYBG

January

Explore a holistic approach to keeping trees healthy and vigorous. Topics include planting and transplanting, pruning, fertilization, root systemmanagement, common problems, tree defenses, and lightning protection. Samples of tree problems, supplies, and tools are exhibited.

Required Text
Harris, more...
223HRT422S 01/05 We 3:00pm-5:00pm Hall
NYBG

Prepare for the Core (Basic) and Category 3 (Ornamentals and Turf) exams that New York State Department of Environmental Conservation requires of all pesticide applicators. We'll cover the handling,use, storage, and application of pesticides; safety and environmental considerations; and insect more...
223HRT357S 01/06 Th 4:15pm-8:45pm Spencer
NYBG

This class will take place online. Registered students will receive login instructions.
Soil is a dynamic, living organism and the very foundation of sustainable horticulture and agriculture. This course focuses on the texture, structure, density, and color of more...
223HRT301CO 01/08 Sa 10:30am-12:30pm Bulpitt
ONLINE

This class will take place online. Registered students will receive login instructions.
Whether you are a budding arborist or weekend woodcutter, knowing how to use your chainsaw safely and maintain it properly are keys to success. This lecture-demonstration more...
223HRT308O 01/08 Sa 10:00am-12:00pm Picciano
ONLINE

This class will take place online. Registered students will receive login instructions.
Study the entire cannabis growing cycle, including best practices for critical harvest and post-harvest procedures, and how artificial lighting and carbon dioxide enrichment can help maximize more...
223HRT156BO 01/10 Mo 6:00pm-8:00pm DeBacco
Crosson
ONLINE

This class will take place online. Registered students will receive login instructions.
Designed for students who want a user–friendly introduction to plant science, this course surveys the major groups of plants—flowering plants, conifers, ferns, and bryophytes—focusing on plant more...
223HRT300DO 01/10 Mo 6:00pm-8:00pm Schondorf-Seghrouchni
ONLINE

This class will take place online. Registered students will receive login instructions.
Graphics are essential in developing and communicating your ideas. Practice various graphic techniques on a range of materials and equipment and learn how to organize and more...
223LAN311BO 01/10 Mo 6:00pm-9:00pm Poccia
ONLINE

This class will take place online. Registered students will receive login instructions.
Join the cut flower farming revolution! Discover the basics of how to design, plant, grow, and harvest a cutting garden that will be productive throughout the more...
223HRT142BO 01/11 Tu 6:00pm-8:00pm Breyer
ONLINE

Learn the basic techniques of winter tree identification using dormant-season characteristics. Buds, bark, fruit, and growth habits on deciduous plants as well as unique aspects of conifers are taught. Specialized techniques and tools of the trade are discussed. Dress for more...
223HRT440 01/11 Tu 1:00pm-3:00pm Logan
NYBG

This class will take place online. Registered students will receive login instructions.
Study theories and principles that have shaped the design of landscapes from antiquity to the present. Explore Eastern and Western garden traditions. Survey all types of more...
223LAN301BO 01/11 Tu 6:15pm-9:15pm Bunnell
ONLINE

Through course study and hands-on pruning, you will learn the best tools, techniques, and timing to use when you prune to help shrubs, conifers, broadleaves, evergreens, and deciduous plantsthrive. Explore how woody plant structure andphysiology influence pruning. You'll learn how more...
223HRT321C 01/14 Fr 10:00am-1:00pm Logan
NYBG

Learn how to nurture the soil so it can sustain your plants. Go beyond basic soil chemistry, by understanding the ionic exchange capacities of soil, as well as how a soil's pH affects what nutrients are available to plants. Explore more...
223HRT302 01/19 We 2:00pm-5:00pm Lozefski
NYBG

Note the "Location" of each session, as we have in-person and online options. Price differences may apply. Confirmation emails contain specific class instructions.
Graphics are essential in developing and communicating your design ideas. Practice various graphic techniques and learn more...
223LAN311C 01/21 Fr 10:00am-1:00pm Poccia
NYBG

This class will take place online. Registered students will receive login instructions.
Designed for students who want a user–friendly introduction to plant science, this course surveys the major groups of plants—flowering plants, conifers, ferns, and bryophytes—focusing on plant more...
223HRT300EO 01/22 Sa 10:30am-12:30pm Day
ONLINE

Through course study and hands-on pruning, you will learn the best tools, techniques, and timing to use when you prune to help shrubs, conifers, broadleaves, evergreens, and deciduous plantsthrive. Explore how woody plant structure andphysiology influence pruning. You'll learn how more...
223HRT321D 01/22 Sa 1:00pm-4:00pm Bishop
NYBG

This blended class meets online for some sessions and on NYBG grounds for others. Registered students will receive login instructions and a syllabus with specifics.
Learn how to manage annual and perennial gardens using a variety of more...
223HRT344O 01/26 We 10:00am-12:00pm Hanson Moore
ONLINE

This class will take place online. Registered students will receive login instructions.
Soil is a dynamic, living organism and the very foundation of sustainable horticulture and agriculture. This course focuses on the texture, structure, density, and color of more...
223HRT301DO 01/27 Th 6:30pm-8:30pm F.
ONLINE

Learn how to design, install, and maintain conventional, specialty drip, and micro-drip irrigationsystems. Drip systems are useful for rooftop and terrace gardens, planters, raised beds, and many landscape and nursery production systems. We will cover basic hydraulics and review the more...
223HRT323 01/27 Th 10:00am-4:30pm Dobossy
NYBG

February

Note the "Location" of each session, as we have in-person and online options. Price differences may apply. Confirmation emails contain specific class instructions.
Designed for students who want a user–friendly introduction to plant science, this course surveys the major more...
223HRT300F 02/01 Tu 10:30am-1:10pm O'Brien
NYBG

This class will take place online. Registered students will receive login instructions.
Learn the principles and techniques of plant propagation by seed and cuttings. Explore the basics of sexual and asexual propagation, with attention to fruit development, seedling more...
223HRT411BO 02/01 Tu 6:00pm-8:00pm TBA
ONLINE

This class will take place online. Registered students will receive login instructions.

As urban populations expand and access to arable land and potable water shrinks, agri-entrepreneurs are turning to innovative systems to grow food indoors without soil-aeroponics, aquaponics, more...
223HRT155BO 02/03 Th 6:00pm-7:00pm Yurgalevitch
Mejia
ONLINE

Learn the identification, classification, and landscape use of native and non-native conifers that thrive in the northeastern United States. Major plant groups studied include Chamaecyparis, Picea, and Pinus. Gain a working knowledge of the best species and cultivars of conifers more...
223HRT333 02/03 Th 10:00am-12:00pm Ruggiero
NYBG

Through lectures, laboratories, and field trips, learn how to work with plants that are difficult to propagate by seed or cuttings. Subjects include advanced seed propagation and techniques of grafting, budding, and micro-propagation. Learn about tissue culture at the Garden's more...
223HRT412 02/03 Th 5:00pm-8:00pm Weinstein
NYBG

Note the "Location" of each session, as we have in-person and online options. Price differences may apply. Confirmation emails contain specific class instructions.
Learn the principles and techniques of plant propagation by seed and cuttings. Explore the basics of more...
223HRT411C 02/07 Mo 10:30am-1:30pm Ruggiero
NYBG

This class will take place online. Registered students will receive login instructions.
Learn the fundamental principles of design in this studio-oriented course, including site analysis, schematic and finished planting plans, and various garden styles. Study the effective use more...
223HRT551O 02/07 Mo 6:00pm-8:50pm Salembier
ONLINE

This class will take place online. Registered students will receive login instructions.
Explore how to create a healthy garden while supporting biodiversity and conserving resources.We'll discuss ways to minimize water usage, effectively handle stormwater, create a healthy soil more...
223HRT395BO 02/08 Tu 6:00pm-8:00pm Conaway
ONLINE

This lecture will take place online. Registered students will receive login instructions.
Building upon a millennia-old tradition of environmental stewardship, Indigenous peoples have developed innovative systems to manage the forests that remain under their sovereign control in ways more...
223HRT812O 02/09 We 11:00am-12:00pm Dockry
ONLINE

This class will take place online. Registered students will receive login instructions.
Explore how to grow plants without soil using hydroponics, which promotes fast growth and requires less water and space than conventional gardens. You'll learn what systems more...
223HRT141O 02/15 Tu 6:15pm-8:15pm Kutz
Lodvikov
ONLINE

Through course study and hands-on pruning, you will learn the best tools, techniques, and timing to use when you prune to help shrubs, conifers, broadleaves, evergreens, and deciduous plantsthrive. Explore how woody plant structure andphysiology influence pruning. You'll learn how more...
223HRT321E 02/15 Tu 10:00am-1:00pm Logan
NYBG

This class will take place online. Registered students will receive login instructions.
Join the cut flower farming revolution! Discover the basics of how to design, plant, grow, and harvest a cutting garden that will be productive throughout the more...
223HRT142CO 02/17 Th 6:00pm-8:00pm Breyer
ONLINE

Learn native and non—native broadleaved evergreens; become familiar with their cultural requirements, identification features, and landscape uses. Learn how to incorporate this important group of plants into both naturalistic and formal landscapesettings. Major plant groups studied include Ilex, Rhododendron, Buxus, more...
223HRT332 02/25 Fr 10:30am-12:45pm Simeone
NYBG
223HRT332A 02/25 Fr 1:30pm-3:45pm Simeone
NYBG

March

Note the "Location" of each session, as we have in-person and online options. Price differences may apply. Confirmation emails contain specific class instructions.
Designed for students who want a user–friendly introduction to plant science, this course surveys the major more...
223HRT300G 03/07 Mo 10:00am-12:40pm Naghshineh
NYBG

This course is designed for horticulturists, gardeners, or designers who want to learn to identify and classify familiar and unusual spring-, summer-, and autumn-flowering bulbs. We will also focus on understanding their biology. Prerequisite: Introduction to Plant Science

Materials Needed
Assorted more...
223HRT342 03/09 We 10:00am-12:00pm McDowell
NYBG
223HRT342S 03/10 Th 4:30pm-6:30pm Hagen
NYBG

Learn how trees survive the many perils of the urban environment. Soil compaction, construction damage, and land development practices can lead to tree decline and early mortality in trees. Examine the biology of trees, and learn how they respond to more...
223HRT426 03/12 Sa 11:00am-2:00pm Picciano
NYBG

This class will take place online. Registered students will receive login instructions.
Join the cut flower farming revolution! Discover the basics of how to design, plant, grow, and harvest a cutting garden that will be productive throughout the more...
223HRT142DO 03/14 Mo 6:00pm-8:00pm Breyer
ONLINE

This class will take place online. Registered students will receive login instructions.

This course is designed for horticulturists who maintain or direct the maintenance of outdoor landscapes. We'll review methods of calculating areas, application rates for fertilizers, and more...
223HRT356O 03/14 Mo 5:00pm-7:00pm Weinstein
ONLINE

Examine the most important factors in the management and maintenance of commercial and residential landscapes using sustainable techniques. Learn to develop programs that reduce adverse effects on the environment, including alternative approaches to conventional lawn management. Focus on how to more...
223HRT443 03/17 Th 4:30pm-7:30pm Laswell
NYBG

This class will take place online. Registered students will receive login instructions.
Study theories and principles that have shaped the design of landscapes from antiquity to the present. Explore Eastern and Western garden traditions. Survey all types of more...
223LAN301DO 03/21 Mo 6:15pm-9:15pm Bunnell
ONLINE

This class will take place online. Registered students will receive login instructions.
Study the entire cannabis growing cycle, including best practices for critical harvest and post-harvest procedures, and how artificial lighting and carbon dioxide enrichment can help maximize more...
223HRT156CO 03/23 We 6:00pm-8:00pm DeBacco
Crosson
ONLINE

Note the "Location" of each section, as we have in-person and online options. Price differences may apply. Confirmation emails contain specific class instructions.
Soil is a dynamic, living organism and the very foundation of sustainable horticulture and agriculture.This course more...
223HRT301E 03/23 We 10:30am-1:30pm Lozefski
NYBG

Note the "Location" of each section, as we may have in-person and blended options. Confirmation emails contain specific class instructions.
Examine the use of plants in the landscape with an emphasis on choosing the right plant for the right more...
223HRT358C 03/26 Sa 10:00am-12:40pm D'Antonio
NYBG