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Virginia Cooperative Extension
Horticulture Classes

Weather reminder: If Prince William County Schools close early or are closed due to inclement weather, classes and programs will be cancelled and will be rescheduled. Please call 703-792-7747 for more information.

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 register online using our Horticulture Class Registration Form.

Saturday in the Garden - Taught by VCE - Prince William Master Gardener Volunteers at the Teaching Garden at St. Benedict Monastery, 9535 Linton Hall Road, Bristow, 20136. All programs are free and run from 9 a.m. - noon. Registration is requested. Please call 703-792-7747 or email

September 12 - Fall Chores in the Garden – Join Master Gardener Volunteers as they prepare for fall and winter in the garden. Topics for discussion include clean up, plant division, soil preparation. Fall Cover Crops in the Cooks Garden – Cover crops protect soil from erosion and enhance soil productivity and health, yielding better vegetables. Cooks’ Garden Master Gardeners show you how. Fall is also the time to plant trees - we will discuss choosing plants, and caring for your trees.  MGPW Plant Sale – Add some new plants to your fall garden! Proceeds support the Teaching Garden.

October 10 - Living Soil - Healthy soil is a web of life, retaining and cycling nutrients into the right forms at the right rates, building soil structure, suppressing disease-causing organisms, protecting plants, and decomposing toxic compounds. Learn about the necessary elements of a healthy soil web. Join the Cooks’ Garden team and learn seed saving tips.

Ask a Master Gardener your Gardening Questions - 

  • Manassas City Farmers’ Market - 9 a.m. to 1 p.m. (Saturdays beginning April 4)
  • Dale City Farmers’ Market - 9 a.m. to 1 p.m. (Sundays beginning April 5)

Call 703-792-7747 for more information.

Prince William County Fair - August 14 - 22, 2015 (10624 Dumfries Road,  Manassas, VA 20112)
Have your gardening, insect and wildlife questions answered by VCE Prince William Master Gardener Volunteers at the Prince William County Fair. Check out the Master Gardener booth in the Agri-Culture Barn. Visit the Prince William 4-H Children’s Barn for hand’s on activities. Please click here for the link to the Prince William County Fair Website.

12 Steps for a Greener Lawn
Saturday, August 29, 2015 10:30 am – 12:45 pm
Chinn Regional Library
13065 Chinn Park Dr, Woodbridge, VA 22192
Learn how to make the best use of valuable resources: your time and money while learning about turf fertilization, maintenance practices and timing that prevent problems and help protect your neighborhood streams, lakes, ponds and ultimately the Chesapeake Bay.
Free, but please register by calling 703-792-7477 or emailing

Root Appreciation Day – A Hands-On Workshop
Friday, September 11th, 9 am-2:30 pm, Registration will begin at 9 am, Event begins at 9:30 am.
5 County Complex Court, Woodbridge, 22193, Suite 202A
If you are a site plan reviewer, landscape architect, arborist, parks planner, grounds maintenance staff, environmental planner, property manager or engineer whose work includes making life and death decisions about trees, this hands on workshop is for you!  Join your colleagues for a great day of hands-on, dirty and satisfying work studying roots.  YOU will be a team member digging to excavate roots from a variety of tree species and sizes growing in common conditions of grass, mulch, near sidewalks, etc. After lunch, each team will present their findings and discuss implications.  Dress for getting dirty and for the weather.  Bring your own tools, such as a hand trowel, garden fork, long handled or short handled pointed shovel, stiff whisk or brush to expose finer roots, garden/work gloves, boots, water bottle, sunscreen, etc.  Pre-registration is required.  Register at
Limited enrollment with no “day of” registrations.  The registration fee for everyone is $5.00.  If you would like a box lunch provided the total registration fee is $15.00.  Registration will begin at 9 am, Event begins at 9:30 am.
Questions?  Becky Woodson, 434-220-9024  ISA credits requested but not yet approved.

Basics of Gardening
Powell’s Creek - McCoart Building
1 County Complex Court, Prince William, VA 22192
February 20, 27, March 12
SNOW DATE: March 19
9 am to 1 pm
Through instruction by Master Gardeners and Extension Staff, students will learn some of the science behind gardening, plant culture and pest and disease solutions. The series will focus on research-based knowledge of plant resistance, problem avoidance and the most effective control strategies.
Please call 703-792-7747 for more information and cost.

Sustainable Vegetable Gardening Series
Chinn Library
13065 Chinn Park Dr., Woodbridge, VA 22192
February 6, 13, March 5
SNOW DATE: March 26
10:30 am to 1:00 pm
Growing our own food, using nature as a guide and incorporating sustainable practices is good for our bodies and good for the earth.  These 3 classes cover the essential topics — planning the garden, using organic sustainable techniques to develop healthy productive gardens, and growing good garden soil.  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; but class is limited to 60, please register.  Taught by the Master Gardener Cook’s Garden Team.  Please call 703-792-7747 or email


Pruning Class
Teaching garden at St. Benedict Monastery

9424 Linton Hall Road, Bristow, VA 20136
 February 20, 2016
1:30 to 3:30 pm
Taught by Rachel Habig-Myers, MS, MPS.  Learn best practices for timing, techniques for pruning trees and shrubs.  This class includes a classroom and hands-on information.  Dress for the weather.  This class is free, but please register by calling 703-792-7747 or email Space is limited


Extension Horticulture Help Desk - Drop off samples at the office or leave a message about your insect disease or gardening question. Staffed by Master Gardener Volunteers. Call 703-792-7747 or email

Help us go GREEN & save more than just a tree! For FREE lawn, landscape, and garden updates register to receive notifications by email.

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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