Orange Jelly Spot in November: What Homeowners Should Do Now

If you've noticed small, gelatinous orange growths appearing on tree bark or woody debris in your yard lately, you're not imagining things. Orange Jelly Spot — a moderate-severity fungal issue — is entering peak activity this month, and homeowners across a wide swath of the country should be paying attention right now. Check our seasonal forecast for a full picture of what's active in your area this fall.

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Why November Matters for This Threat

Fungal issues don't follow the same logic as insects or diseases that fade with the first frost. Orange Jelly Spot has a typical activity window spanning February through June and again September through November, making late autumn one of its most significant periods of the year. As deciduous trees shed their leaves and woody material accumulates on the ground, conditions can become favorable for fungal activity — particularly when November brings the cool, wet weather patterns common across much of the U.S.

It's worth emphasizing that this activity window is an estimate based on observational data, and local conditions will always play a role in timing. That said, November consistently falls within the range when this fungus tends to show up in the wild. This month, the combination of fallen debris, moisture, and cooling temperatures creates conditions worth monitoring closely.

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What to Look for Right Now

Orange Jelly Spot is visually distinctive. As its name suggests, look for small, bright orange, jelly-like or gelatinous spots on bark, branches, stumps, or woody debris. These growths are the fruiting bodies of the fungus and are often most visible after rainfall or during periods of high humidity.

Walk your property with fresh eyes this month — now that leaf canopy has thinned or dropped entirely, bark surfaces that were hidden all summer are suddenly exposed and easier to inspect. Pay particular attention to:

• Fallen branches and woody debris on the ground
• The lower bark and root flare of established trees
• Stumps and decaying wood near the base of living trees
• Previously stressed or damaged trees, which may be more vulnerable

If you're unsure whether what you're seeing matches this fungus, use our diagnosis tool to get a clearer picture before taking action.

See full details on Orange Jelly Spot for reference photos and additional identification guidance.

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Where It's Active

This November, Orange Jelly Spot has been documented across 15 states: Maine, Washington, Connecticut, Pennsylvania, Tennessee, New Jersey, Georgia, Massachusetts, California, New York, Colorado, Michigan, Minnesota, North Carolina, and Ohio. That's a broad geographic spread, covering the Northeast, Southeast, Midwest, Pacific Northwest, and parts of the West.

If you're in any of these states, consider this your signal to take a closer look at your trees and woody landscape features this month.

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What to Do This Month

The good news: there are concrete steps you can take right now to manage this threat and limit its spread.

1. Sanitation and Pruning This is your most important task in November. Remove and destroy all infected branches, leaves, and fallen woody debris from your property. Don't compost material that shows signs of fungal growth — bag it and dispose of it. Improving air circulation by thinning dense areas of canopy growth can also reduce favorable conditions for the fungus.

> Important: Sterilize your pruning tools between cuts and between trees. A diluted bleach solution or isopropyl alcohol works well. This prevents inadvertently spreading fungal material from one area to another.

2. Soil and Moisture Management Many fungal pathogens — including this one — thrive in persistently wet conditions. As you head into late fall:

• Check drainage around the base of trees and correct any standing water issues
• Avoid overwatering if you're still running irrigation
• Apply mulch (2–4 inches, kept away from the trunk) to reduce soil splash, which can spread spores

3. Fungicide Application If you've identified an active infection, a systemic or contact fungicide applied at the first sign of infection can help. Repeat applications may be necessary during extended periods of wet weather. Always follow label rates and application timing carefully. When in doubt about product selection, consult a professional.

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When to Call an Arborist

Not every fungal sighting requires professional intervention, but there are situations where it's the right call:

• You're seeing widespread fruiting bodies across multiple trees or large sections of bark
• A high-value or structurally important tree is showing signs of infection
• You're unsure of the identification and want confirmation before treating
• Previous self-treatment hasn't resolved the issue

An ISA Certified Arborist can assess the full picture — including whether the fungus is a symptom of a deeper structural or health issue in your trees — and recommend a targeted management plan.

Find a certified arborist near you to get a professional assessment before the season closes out.

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Stay ahead of seasonal threats all year long with our seasonal forecast, updated regularly with current activity data.