
The health of Arlington and Alexandria’s urban forest depends on efforts across the community to plant and care for our trees. From time to time, our green canopy needs some TLC. Join Kirsten Conrad, Extension Agent for Arlington County and the City of Alexandria, to learn about common questions asked regarding tree root, leaf, and stem diseases and insect pests, and what is injurious to your trees and what is not. This program also will discuss best practices for tree planting and replacement and will offer easy, inexpensive, straightforward measures to help avoid tree problems and ensure that your trees have the best possible chance for success.
Speaker: Kirsten Conrad, Agriculture Natural Resource Extension Agent, Virginia Cooperative Extension
Zoom session, recorded September 10, 2021
Additional Resources
Master Gardeners of Northern Virginia
- Invasive Plants and Native Alternatives
https://mgnv.org/invasive-plants/ - Tried and True Native Plants for the Mid Atlantic
https://mgnv.org/native-plants/ - Best Bets: Plants for Particular Uses
https://mgnv.org/resources/best-bets/
Virginia Tech
- Boxwood Blight Task Force in Virginia links including Blight Resistant cultivars/types
https://ext.vt.edu/agriculture/commercial-horticulture/boxwood-blight.html - Spotted Lanternfly in Virginia
https://ext.vt.edu/agriculture/commercial-horticulture/spotted-lanternfly.html - 2021 Pest Management Guide for Home Grounds and Animals (Chapter 4)
https://resources.ext.vt.edu/contentdetail?contentid=2705&contentname=2021%20Home%20Grounds%20and%20Animals%20PMG%20-%20Home%20Ornamentals - Problem Free Trees for Virginia Landscapes
https://digitalpubs.ext.vt.edu/vcedigitalpubs/4993959195311462/MobilePagedReplica.action?pm=2&folio=1#pg1
Virginia Tech Dendrology website
- Tree Selection App:
https://dendro.cnre.vt.edu/dendrology/vtree.htm - Tree Selection Fact Sheets
https://dendro.cnre.vt.edu/dendrology/factsheets.cfm - Street Tree Selector
https://dendro.cnre.vt.edu/dendrology/treeselector.cfm - Virginia Big Trees
https://bigtree.cnre.vt.edu/
Sample Pests Fact Sheets
- 20 Questions on Plant Diagnosis
http://ohioline.osu.edu/hygfact/3000/pdf/PP401_03.pdf - Hemlock Wooly Adelgid
https://resources.ext.vt.edu/contentdetail?contentid=3068&contentname=Hemlock%20Woolly%20Adelgid - Southern Pine Beetle
https://www.fs.usda.gov/Internet/FSE_DOCUMENTS/fsbdev2_042840.pdf - Verticillium Resistant Plants list:
https://www.missouribotanicalgarden.org/gardens-gardening/your-garden/help-for-the-home-gardener/advice-tips-resources/pests-and-problems/diseases/cankers/verticillium-wilt.aspx - Hypoxylon Canker Information:
https://agrilifeextension.tamu.edu/library/landscaping/hypoxylon-canker-of-oaks/

Local Partners
- Plant Nova Natives Tree Campaign
https://www.plantnovatrees.org/ - Tree Stewards of Arlington/Alexandria
https://treestewards.org/ - Arlington Regional Master Naturalists
https://armn.org
Find an ISA Certified Arborist services:
- Good Tree Care.com
https://goodtreecare.com/ MAC- ISA - Trees are Good.org
https://www.treesaregood.org/ ISA