TreeIssues

North Dakota

23 active alerts in this region

TreeIssues monitors plant and tree health threats across North Dakota. Below you will find current alerts for pests, diseases, fungi, and invasive species that have been detected in the state. Alerts are sourced from USDA, USFS, and North Dakota state agricultural agencies. Each alert includes severity ratings, affected species, symptoms, and recommended treatments.

Dutch Elm Disease

CRITICAL
Disease

A devastating vascular wilt disease spread by elm bark beetles that has killed millions of American elms since the 1930s. The fungus blocks water-conducting vessels, causing rapid wilting. It fundamentally changed the American urban landscape.

Affecting 45 regions

Emerald Ash Borer

MODERATE
Insect

An invasive wood-boring beetle native to Asia that has killed hundreds of millions of ash trees across North America since its discovery in Michigan in 2002. Larvae feed on the inner bark, disrupting nutrient and water transport.

Affecting 36 regions

Asian Longhorned Beetle Damages hardwood trees by tunneling deep into trunks and branches

MODERATE
Insect

Asian Longhorned Beetle Damages hardwood trees by tunneling deep into trunks and branches - identified by USDA APHIS as a pest threat.

Affecting 50 regions

Vashti Sphinx

MODERATE
Insect

Vashti Sphinx observed in the wild. Research-grade iNaturalist observation.

Affecting 1 region

Western Conifer Seed Bug

MODERATE
Insect

Global is over and want to continue including drawings just for regular observations with photo as primary. Is this permitted in non- project observations?

Affecting 18 regions

Red-banded Leafhopper

MODERATE
Insect

Spent pretty much all day today at the car dealership to get a new vehicle -- sooo, I missed out on a park visit. Anywho, I put up the blacklights in the backyard to see some local bugs. :)

Affecting 26 regions

Wood-colored Apamea Moth

MODERATE
Insect

Wood-colored Apamea Moth observed in the wild. Research-grade iNaturalist observation.

Affecting 1 region

Two-spotted Stink Bug

MODERATE
Insect

Two-spotted Stink Bug observed in the wild. Research-grade iNaturalist observation.

Affecting 3 regions

Alfalfa Plant Bug

MODERATE
Insect

Alfalfa Plant Bug observed in the wild. Research-grade iNaturalist observation.

Affecting 14 regions

Poplar-and-Willow Borer

MODERATE
Insect

Poplar-and-Willow Borer observed in the wild. Research-grade iNaturalist observation.

Affecting 3 regions

Yellow-collared Scape Moth

MODERATE
Insect

Yellow-collared Scape Moth observed in the wild. Research-grade iNaturalist observation.

Affecting 18 regions

Waved Sphinx

MODERATE
Insect

Waved Sphinx observed in the wild. Research-grade iNaturalist observation.

Affecting 24 regions

Asian Lady Beetle

MODERATE
Insect

Found alive but in terrible shape. Was swimming around in the water bowl we put out for feral cats here. Also appeared to have had a run in with a spider web, as it had something stuck all over it. Got a lot of suggestions for fungi and parasitoids that target ladybeetles, so maybe its appearance is more a function of a disease or parasite process taking place. It was definitely having trouble getting adound, but could be due to having been in the water for a long time and/or having bits of web

Affecting 41 regions

Pink Underwing

MODERATE
Insect

Pink Underwing observed in the wild. Research-grade iNaturalist observation.

Affecting 2 regions

Black Blister Beetle

MODERATE
Insect

Black Blister Beetle observed in the wild. Research-grade iNaturalist observation.

Affecting 6 regions

Large Milkweed Bug

MODERATE
Insect

Cluster of black and orange insects on milkweed plant. Warm, near sunset, slightly overcast.

Affecting 35 regions

Mother Underwing Moth

MODERATE
Insect

Mother Underwing Moth observed in the wild. Research-grade iNaturalist observation.

Affecting 5 regions

Sweetheart Underwing

MODERATE
Insect

Sweetheart Underwing observed in the wild. Research-grade iNaturalist observation.

Affecting 7 regions

Strawberry Root Weevil

MODERATE
Insect

Strawberry Root Weevil observed in the wild. Research-grade iNaturalist observation.

Affecting 16 regions

Relict Rhinoceros Beetle

MODERATE
Insect

Relict Rhinoceros Beetle observed in the wild. Research-grade iNaturalist observation.

Affecting 14 regions

Herald Moth

MODERATE
Insect

Herald Moth observed in the wild. Research-grade iNaturalist observation.

Affecting 3 regions

Black Swallowtail

MODERATE
Insect

Black Swallowtail observed in the wild. Research-grade iNaturalist observation.

Affecting 17 regions

Powdery Mildew

LOW
Fungus

A widespread group of fungal diseases that produce a distinctive white powdery coating on leaves and shoots. It affects hundreds of tree, shrub, and plant species. Unlike most fungi, it thrives in warm, dry conditions with high humidity.

Affecting 49 regions

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