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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

July 11 - Composting - Learn how to make “black gold” by turning grass, leaves and clippings into dark brown, crumbly, sweet-smelling soil conditioner. Compost also holds moisture and nutrients for the garden so flowers and vegetables are more beautiful and abundant. Join Joe and the Master Gardener Compost team for the full story on compost. Starting Fall Vegetable Garden – Now is the time to plan to have fall salad greens and sweet root crops growing for weeks beyond the first frost. Get tips from Cooks’ Garden Master Gardener Volunteers to help you extend your vegetable season long beyond the heat of summer.

August 8 - What’s that Weed? - Get help for identifying those troublesome weeds in your lawn and garden. Sniff your way through the Fragrance garden with Ruth Johnston as she shares wisdom and experiences with plant selection and care in this beautiful garden bed.

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. 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, 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.

The Bird with the Sky on it's Back by Brian and Marci Swanson
Saturday, July 18; 10:30 am at Central Library
8601 Mathis Avenue, Manassas, VA 20110
People have loved Bluebirds since they saw them on their farms in earlier centuries. Loss of habitat almost doomed them until far sighted folks began to put up nest boxes for them. The result has been a great comeback for the beautiful Bluebird.
Marci and Brian Swanson have been putting up nest boxes for 20 years and have been active in several Bluebird societies, including the one here in Virginia. Their program will talk about how to attract Bluebirds to your garden, what to feed them if you wish, and the biggest threat they face.

Please reserve your space at the Extension Horticulture Help Desk 703-792-7747 or

If you are a person with a disability and require any auxiliary aids, services or other accommodations to participate in this activity, please notify Virginia Cooperative Extension at 703-792-6285/TDD PC 1-800-828-1120

Introduction to the Prince William County Master Gardener Program
Find out about becoming a Master Gardener Volunteer with Virginia Cooperative Extension.  Please plan to attend one of the information sessions:
Monday, August 3 - 6:30-8 pm - Development Services Building Room 202 A & B - 5 County Complex Court, Prince William, 22192
Tuesday, August 4 - 6:30-8 pm - McCoy Room at Sudley North Government Building 7987 Ashton Avenue, Manassas 20109
Free, but registration is necessary, please call 703-792-7747 or email

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.

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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