As summer winds down and fall starts painting the mountains of Western North Carolina in bold color, gardeners may start noticing some changes that can feel… alarming. Evergreens turning brown? Hostas riddled with holes? Roses still under siege from beetles? What’s happening out there?
Before you panic or load up the sprayer, take a deep breath. Most of what you’re seeing this time of year is part of a natural rhythm—and you’re not alone. These late-summer and fall changes can be confusing, especially if you’re relatively new to gardening in the Asheville area. But the good news? Much of it is normal.
Let’s walk through what’s typical, what’s not, and how to approach garden issues with a nature-based strategy.
Although called “evergreens,” it is not uncommon for conifers such as pine, spruce, arborvitae, and others to shed many of their needles in the fall. The needles will turn yellow or brown.
Evergreens Turning Brown in Fall? Don’t Worry—They’re Not Dying
Let’s start with the one that worries people the most: evergreens shedding needles or dropping leaves.
We get it. You planted that blue spruce, arborvitae, or rhododendron for its year-round color—and now it’s turning yellow or brown and shedding. But here’s the reassuring truth: This is completely normal.
Evergreens such as:
- Eastern white pine (Pinus strobus)
- Colorado spruce (Picea pungens)
- Arborvitae (Thuja species)
- Rhododendrons (Rhododendron spp.)
- Hollies (Ilex species)
…don’t keep their needles or leaves forever. They just don’t lose them all at once like deciduous trees do.
So, What’s Actually Happening?
- In fall, many needle-leaved evergreens shed their oldest (interior) needles. This often looks like browning or yellowing deep inside the plant while the outer needles stay green.
- In spring, many broadleaf evergreens, like rhododendrons and hollies, drop their older leaves as new growth pushes out.
It might look a little messy, but this is just how evergreens renew themselves. Those inner needles are often shaded out and no longer helpful for photosynthesis, so the plant lets them go.
Shedding Helps, Too
Think of it like the evergreen getting ready for winter. Holding onto every old needle would make the plant heavier—and more vulnerable to damage when snow or ice arrives. Shedding lightens the load.
Shedding Can Vary
Some trees and shrubs shed more depending on the year’s conditions. Drought stress, heatwaves, and temperature swings (all common in WNC’s changing climate) can cause a heavier-than-usual shed.
When Evergreen Shedding Might NOT Be Normal
While interior needle loss in the fall is typical, tip browning or dieback (where the ends of the branches are turning brown or drying out) can be a sign of a larger issue.
A few culprits include:
- Drought stress (especially if new plants didn’t get enough water)
- Fungal diseases like diplodia tip blight or kabatina blight (especially in pines and junipers)
- Pests damaging root systems or boring into stems
If you’re seeing whole sections of a plant die back from the outside in—especially outside the normal fall window—it’s worth a closer look. Check with your us here at the garden center or a local extension office. (The North Carolina Extension Gardener Plant Toolbox is also a fantastic online resource.)
This dogwood tree is experiencing leaf senescence, when the leaves turn color in the fall. Grey or dulling leaves can be a part of this process, especially as temperatures cool and daylight hours shorten. It may also indicate fungal disease, so monitor and bring in a leaf if you’re concerned.
What About All the Other Late-Season Problems?
Fall can be a tricky time for gardens, and plenty of other issues pop up at that time. Here’s a quick rundown of what’s common in Asheville-area gardens in the fall:
- Hostas with gaping holes? Probably slugs or snails.
- Hydrangea leaves looking tattered? Could be from leaf spot or chewing insects, but likely nothing fatal.
- Dogwood leaves turning grayish and sickly? That’s a normal senescence response, not necessarily disease. (Word for the day: Senescence. That’s a process where leaves age or stop growing, often as part of a natural cycle—like colors changing and shedding in fall—or in response to environmental stress.)
- Red buckeyes looking tired and brown? This native beauty tends to go dormant earlier than others.
- Maples and cherry trees with yellowing or dropping leaves? Totally normal at this time of year.
- Perennials flopping all over the place? It’s been a long season—some cutting back and staking can help next year.
Look for lacewings in your garden; these can serve as a natural pest control for you! Attract them with host plants that include cilantro, dill, fennel, yarrow, cosmos and sunflower.
How to Keep Your Garden Healthy, Naturally
If you’re tempted to blast everything with a chemical treatment, pause for a moment. Most of these problems don’t require drastic measures—and that’s where Integrated Pest Management (IPM) comes in.
What Is IPM?
Integrated Pest Management is a balanced approach to garden care that uses thoughtful planning, regular observation, and targeted action. It helps you reduce pest problems while protecting pollinators, pets, and people.
Here’s how it works:
1. Start With Smart Choices (Cultural Controls)
Healthy gardens begin with good planning:
- Choose plants that are zone-appropriate for Asheville and the WNC mountains (zones 6b–7a).
- Put the right plant in the right place—don’t put a full-sun plant in the shade or vice versa.
- Pick disease-resistant varieties when possible.
- Rotate crops in your veggie beds to keep soil healthy and pests guessing.
- Avoid overwatering, and water early in the day at soil level, not overhead.
- Prune dead or damaged wood—this removes pest habitat.
- Use mulch wisely—two to three inches is plenty.
2. Hands-On Garden Help (Mechanical Controls)
Sometimes the simplest fix is… your hands.
- Hand-pick Japanese beetles off your roses and dunk them in soapy water.
- Blast aphids with a strong hose spray.
- Use netting to protect berries or tender plants from critters.
- Regular weeding removes competition and improves airflow.
3. Let Nature Do the Work (Biological Controls)
Your garden already has allies—invite more of them in!
- Plant flowers like dill, fennel, yarrow, asters, and milkweed to attract beneficial insects.
- Learn to recognize lady beetles, lacewings, and parasitic wasps—they eat the pests!
- Avoid using broad-spectrum insecticides that wipe out your garden helpers.
4. Pesticides: The Last Resort
Yes, there are times when you might need to treat a problem chemically—like if a prized hedge or screen is being decimated. If so:
- Choose the least toxic option available.
- Apply when pollinators are not active (early morning or evening).
- Spot treat the affected areas only.
A Garden Doesn’t Have to Be Perfect
Your garden doesn’t have to be a magazine spread. A few chewed leaves, a little shedding, some flopping perennials—that’s the sign of a living, breathing landscape. One that feeds bees, shelters birds, and weathers the seasons.
Fall is a season of transition—for your garden and for you. As the garden rests, so can you.
So if your evergreens are shedding or your hydrangeas look a little ragged, don’t worry. It’s all part of the cycle. You’re doing just fine—and so is your garden.
Want more help identifying what’s going on in your garden this fall? Bring us photos or samples of the plants you’re concerned about. We’re always happy to take a look!
