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Virginia Cooperative Extension
Horticulture Classes

Environment and Natural Resources (ENR) Classes

Virginia Cooperative Extension Horticulture classes are free (unless noted) and are open to the public. Pre-registration is required for classes. Note that class cancellations are determined by the weather and number of registrations. For more information or to register, call the Extension Master Gardener Help Desk at 703-792-7747 or email.  If you are a person with a disability and desire any assistive devices, services or other accommodations to participate in this activity, please contact Marie Welling, Prince William at 703-792-4731/TDD* during business hours of 9 a.m. and 5 p.m. to discuss accommodations 5 days prior to the event.
*TDD number is (800) 828-1120.

Basics of Gardening Series
February 11, 18, & 25
1:00 - 4:00 pm
Potomac Community Library, 2201 Opitz Blvd., Woodbridge, 22191
Through instruction by Master Gardeners and Extension Staff, students will learn some of the science of gardening, plant culture and pest and disease solutions. The series will focus on research-based knowledge of plant processes, problem avoidance, and the most effective control strategies.   THIS SERIES OF CLASSES HAS A WAITING LIST, Please contact the Extension Master Gardener Help Desk at 703-792-7747 or email to be added to the waiting list.

Date/Time Description
February 11
1:00—4:00 pm Getting Started – the Basics
February 18
1:00—4:00 pm Digging In – Lawns, Landscaping and Native Plants
February 25
1:00—4:00 pm Dealing with Problems – Weeds, Insects and Integrated Pest Management
March 11 SNOW DATE


Sustainable Vegetable Series
Central Community Library, 8601 Mathis Avenue, Manassas, VA 20110
10:30 am
March 18, 2017
March 25, 2017
Growing our own food, using nature as a guide and incorporating sustainable practices is good for our bodies and good for the earth.  These classes will cover the essential topics for sustainable vegetable gardening in Prince William County.  These practices are on display at our Teaching Garden and showcased in our Saturday in the Garden programs.  There is no charge for these classes; please register.  Taught by Virginia County Extension staff and Master Gardeners.  Please click here to register.


VCE-Prince William Well Water Clinic
Kick-off: March 27, 2017 at 7 - 8:30 pm, PWC Board Chamber in the McCoart Building, 1 County Complex, Woodbridge, VA  22192
Sample Drop off: March 29, 2017 6:30am-10am ONLY, at the VCE Office, 8033 Ashton Ave., Manassas 20109
Results Interpretation Meeting: May 8, 2017 from 7pm - 9 pm
PWC Board Chamber in the McCoart Building, 1 County Complex, Woodbridge, VA  22192
Do you know what’s in your drinking water? While public water supplies are tested daily for contaminants, most private water supplies, like wells and springs, are rarely tested. It is recommended that well owners test their water at least annually for bacteria and nitrates.  Regular well testing allows you detect problems early.   Basic well testing can cost over $250, but through the Virginia Household Water Quality Program (VHWQP) an array of tests only costs $55.
The goal of VHWQP is to improve the water quality of private water supplies by offering low cost water sampling and information about possible treatment options. 
The kick-off meeting introduces water quality concerns in our area; kits will be provided.  The interpretation meeting will explain the report, include a discussion and answer questions on dealing with water problems. For more information on this statewide program go to this link.
Samples are analyzed for the following: iron, manganese, nitrate, lead, arsenic, fluoride, sulfate, pH, total dissolved solids, hardness, sodium, copper, total coliform bacteria and E. Coli bacteria. 
How much does it cost? $55.  NO CASH PLEASE - CHECKS OR MONEY ORDERS ONLY!  Fee will be collected at the KICK OFF MEETING 3/27.  (If you can’t attend this meeting, please call 703-792-7747 for more information on how to pick up your test kit)

View the program flyer here

To register for this class, or to ask questions about the program, please call 703-792-7747 or

Please click here to register.
Water Samples must be dropped off on Wednesday March 29, between the hours of 6:30 and 10am at the VCE - Prince William Office, 8033 Ashton, Suite 105, Manassas, 20109.
If you are a person with a disability and require any auxiliary aids, services or other accommodations to participate in any of these workshops, please notify Virginia Cooperative at 703-792-4731/TDD PC 1-800-828-1120.

Horticulture Dayz,  March 8th and 9th, Northern Virginia 4-H Center
Enjoy two days of horticulture with educational presentations on turf and tree topics. This two-day training is designed for commercial landscapers, parks and rec staff, arborists, and nursery workers. This will be a chance to network and hear about current research and meet vendors and dealers of landscape equipment and supplies.
A new component this year, the Youth Career Day (March 9) will introduce youth ages 15 to 20 to the many rewarding careers available in the green industry.
Sponsored by the Northern District Horticulture Agents and Virginia Turfgrass Council

 2017 Horticulture Dayz flyer


Irises: Culture and Care in the Integrated Landscape
June 3, 2017, 10 am—12 noon
Historic Manassas Courthouse, 9250 Lee Ave., Old Town Manassas
Irises are among the easiest of perennials to grow, and they give an abundance of beauty with minimum care. Master Gardener Volunteer, Ross Eagles, iris enthusiast, and member of the American Iris Society will share his secrets!   This free class is for all ages, but please register so that we have sufficient materials, and in case there is a cancellation. 703-792-7747 or   Please click here to register


12 Steps for a Greener Lawn

Learn how to make the best use of valuable resources – your time and money – while learning about research-based best management practices for turf fertilization, maintenance practices and timings that prevent problems and help protect your neighborhood streams, lakes, ponds and ultimately the Chesapeake Bay.

Saturday, April 1st, 2017
Haymarket-Gainesville Library, 14870 Lightner Road, Haymarket
10:15am - 12:00pm

Saturday, June 10th, 2017
Chinn Park Regional Library, 13065 Chinn Park Drive, Woodbridge
2:00-4:00 pm

 Classes are free, but please register at 703-792-7747 or

 Please click here to register for either of the classes above


Saturday in the Garden Programs

Our free horticulture classes take learning out of the classroom and into the garden! 

Enjoy hands-on, practical, research-based information at our Teaching Garden programs at the St. Benedict Monastery, 9535 Linton Hall Road, Bristow, 20136. Classes are taught by VCE - Prince William Staff & Master Gardener Volunteers. All programs are held outside, are free and run from 9:00am - Noon. 

Please dress for weather.   Registration is requested to ensure adequate handouts and make notification of weather cancellations, please call 703-792-7747, email or please click to register here

Read more about this year's topics at the following link


Virginia Cooperative Extension complies with the Americans with Disabilities Act. If you are a person with a disability and require accommodations for a workshop, meeting or event, call (703-792-6285/TDD PC 1-800-828-1120) at least five days prior to the event.


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