Bare Branches, Busy Roots: November Tree Care in the DMV
Below Ground: Why Fall Root Care Matters
November in the DMV is a month of transition. The last leaves come down and the first hard frosts arrive. Between Thanksgiving plans and holiday lights, the yard is easy to forget.
Your trees, though, are busy. Above ground they’re shutting down for dormancy. Below ground, roots keep growing until the soil cools to about 40°F. What happens this month shapes how well they ride out winter and how strongly they leaf out in spring.
In fall, trees shift energy from leaves to roots, which keep absorbing water and nutrients until the soil drops below about 40°F. A tree that enters dormancy with a healthy root system handles winter stress and spring leaf-out far better.
Construction, foot traffic and equipment compact the soil and squeeze out the air and water roots need. Use these weeks before the ground freezes to check the root zone:
- Look for compaction and drainage problems. Standing water, hard bare soil and exposed roots are warning signs. Aeration and vertical mulching can loosen compacted soil.
- Find the root flare. The trunk should widen visibly where it meets the ground. If it disappears straight into mulch or soil, the flare may be buried, which invites rot and girdling roots.
- Keep watering. Deeply soak new plantings and evergreens about once a week without rain, until the ground freezes.
One leaf caveat: healthy leaves can be mowed into the lawn, but leaves from trees with anthracnose, leaf spot or powdery mildew should be bagged. Those fungi overwinter in leaf litter, and home compost piles rarely get hot enough to kill them.
Above Ground: Dormant Pruning and Storm Prep
Crossing limbs, deadwood and cracked unions that hid all summer are suddenly visible. That’s one reason to prune during dormancy:
- Less stress. With metabolism slowed, trees handle cuts better and can start sealing wounds before spring.
- Less disease and pest pressure. Cold slows many pathogens and insects.
- Better spring growth. Removing problem wood now directs energy into well-placed new growth.
Timing still varies by species. Birch and maple can “bleed” sap if pruned too close to spring, so they’re better done earlier in winter.
Ice and heavy, wet snow are hardest on older trees with long lateral limbs and on weak branch unions. Before winter, walk your yard and look up for:
- Dead or hanging limbs, especially over roofs, driveways and walkways
- Cracks in the trunk or where branches meet it
- Mushrooms at the base or shelf fungi on the trunk, which can signal hidden decay
- A lean that’s new or getting worse
Hazardous limbs shouldn’t wait for routine pruning. For structurally weak trees, weight-reduction pruning or cabling and bracing can lower the risk of failure. Take this walk before you climb a ladder to hang holiday lights.
Invasive Plants: A Dormant-Season Job
English ivy and wisteria climb and weigh down trees and smother natives below. Virginia creeper can damage masonry. Bamboo spreads through shallow, wide roots, and Queen Anne’s lace scatters seed across beds.
Late fall is one of the best times to tackle them:
- Treatments work better. Plants are moving resources down into their roots, so systemic treatments travel where they’ll do the most good.
- They’re easier to find. With leaves down, vines climbing trunks and fences stand out.
- You stop next year’s crop. Clearing plants before they seed keeps them out of spring beds.
Check cleared areas again in spring for regrowth, contain bamboo with a root barrier, and replant open ground with natives so invasives have less room to return.
Questions? Our ISA Certified Arborists offer free consultations at (703) 260-9444 or hello@rtectreecare.com. Happy Thanksgiving from all of us at RTEC Treecare.
Your November Checklist
- Water new plantings and evergreens weekly until the ground freezes
- Bag leaves from trees with leaf disease
- Look up for dead limbs, cracks and fungi before storms arrive
- Pull or cut invasive vines while they’re easy to spot
- Protect young trunks from deer during rutting season
- Put a spring inspection on the calendar
Loved Your Experience With RTEC? Let Us Know!
Word of mouth means everything! If our team has taken great care of your trees or property, we’d be so grateful if you’d take a minute to share your experience with a Google review. It helps our neighbors find us and it means the world to our team.
★ Leave RTEC Treecare a Google Review
Questions? We’re Here to Help.
Whether you need a routine checkup for your trees, a plant health care consultation, or emergency tree services, the RTEC Treecare team is ready.
Thank you for being part of our first 30 years — here’s to many more.
