Navigation
Upcoming Events
Jul 26, 3:00 PM
Douglas/Sarpy County Extension Office
Jul 27, 8:00 AM
Douglas/Sarpy County Extension Office
Aug 1, All Day
Lancaster Event Center
Aug 23, All Day
N/A
Aug 23, All Day
Nebraska State Fair - Grand Island
Drought Resources
University of Nebraska-Lincoln Extension has created a new website that offers resources for those dealing with drought.
Tree & Shrub Selection Videos
Tree & Shrub Management Videos
Pruning Videos
Fruit Shrubs | Tools Trees |
Trees & Shrubs
- Large sections of the outer branches on my holly bush have brown, dried leaves this spring. It was fine in the fall, but now I'm finding all these brown leaves. What's going on? Dessication
- A couple of evergreen questions with similar problems, even though the trees are different. Forty 1-year old pines are turning yellowish on the south side of the trees in late April. The south side does get more wind than the other side. The second tree is an arborvitae that is also turning brown. What is happening? Dessication
- Parts of my juniper tree are turning brown. When I look closely I see there are many small cocoons hanging from underneath the branches. What's damaging my tree? Bagworms
- My Austrian pine tree has a lot of brown needles. What's the problem? Dothistroma needle blight
- Suddenly this fall, my evergreen trees have many needles that are starting to change color or turn yellow. My trees aren't dying, are they? Natural needle drop
- My ornamental plum tree has large black swellings on several of the branches. What is this and will it kill my tree? Black knot gall
- Is there something that can be applied around the ash trees to keep them from getting Emerald Ash borer (EAB)? Emerald Ash borer
- My lilac is not growing well and some stems are even dying. What is wrong? Oystershell scale
Tree Diseases
- My Austrian pine tree has a lot of brown needles. What's the problem? Dothistroma needle blight
- Cedar trees in my windbreak are turning brown at the base. I can't find any insects, but it's getting worse every year. What's wrong? Cercospora blight
- Suddenly this fall, my evergreen trees have many needles that are starting to change color or turn yellow. My trees aren't dying, are they? Natural needle drop
- I'm worried about this disease of pine trees I have been hearing about. What is it and can it be prevented? Pine wilt
- My ornamental plum tree has large black swellings on several branches. What is this and will it kill my tree? Black knot gall
- My crabapple tree is dropping leaves like crazy! Almost half the foliage is gone and the remaining leaves have orangish-spots. Cedar-apple rust
- My Ash tree has orange spots on the leaves and some leaves are falling. Is this a disease? Ash rust
Tree Insects
- Parts of my juniper tree are turning brown. When I look closely I see there are many small cocoons hanging from underneath the branches. What's damaging my tree? Bagworm
- If homeowers don't see any bagworms on their evergreen trees, but know that trees in the neighborhood are affected how many times they should spray their trees and with what if they don't see them.
- Small greenish caterpillars are eating the needles on my evergreen trees. What are these insects and how can I control them? Pine sawfly
- What is this webby mass on top of my River Birch, and will to come back? Fall webworm
Resources
- Abiotic Problems of Trees, Nebraska Forest Service
- American Forests Famous & Historic Trees
- Borers of Shade Trees and Ornamentals, UNL Entomology
- Diseases of Broadleaf Trees, Nebraska Forest Service
- Diseases of Evergreen Trees, Nebraska Forest Service
- Insect Pests of Broadleaf Trees, Nebraska Forest Service
- Insect Pests of Evergreen Trees, Nebraska Forest Service
- Nebraska's Champion & Heritage Trees
- Nebraska Forest Service
- Nebraska Statewide Arboretum
- ReTree Nebraska
- USDA Forest Service
- What Tree Is That?, Arbor Day Foundation
Local Conditions
Dry conditions persist throughout Nebraska. Stay informed on current conditions, and public water utilities restricting water use. Visit UNL Drought Resources.
Your Weather Forecast
- Nebraska's local Soil Temperatures
- US Drought Monitor
