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Trees

All Trees Content

Green and brown grasshopper with two yellow lines that originate on the head and meet on the abdomen.

Grasshoppers in Gardens

Due to large populations and dry conditions, grasshoppers are moving into gardens and feeding on whatever they can find. In a normal year, grasshoppers can be a nuisance in a garden, but during an outbreak year, they can present a real threat to gardens, shrubs and small trees.

Rangeland covered with dense thickets of maturing cedar trees.

Cedar Trees and Rangeland Loss

The issue of cedar tree invasion into South Dakota’s rangelands tends to be a regional conversation. There is generally broad agreement among most resource professionals that these trees are in fact changing our landscape in a negative way.

a grub on a tree branch that has the bark pealed off

Sioux Falls to Host Emerald Ash Borer Tree Injection Workshop

April 21, 2021

As the season for emerald ash borer treatments nears in South Dakota, state forestry experts want applicators in the Sioux Falls area to be prepared.

man watering newly planted tree with yellow bucket

Tree Watering Tips for Drought Conditions

There is no precise recipe for how much and how often trees should be watered during a drought. However, there are a few guidelines to follow.

grove of trees with noticable yellowing and browning on leaves

Trees & Drought Stress

Trees require a lot of water to meet their functional needs and long-term shortages can influence their growth and survival.

sign outside park office with fire danger level listed as "very high"

Campfire Safety in Drought Conditions

During fire season, open fires may be prohibited or otherwise restricted by the regulatory agency in charge of the campground or facility that you are visiting.

Maple leaf branch with green to yellow leaves

Why Are The Tree Leaves Turning Yellow?

Chlorosis, a condition where the leaf veins remain green but the surrounding foliage turns pale green or yellow, is a common occurrence on certain tree species in South Dakota.

fruit and vegetable garden with raised beds

Fire Blight

Fire blight is a disease that can infect apples, pears, and certain ornamental species including crabapples, cotoneaster, and mountain ash. Occasionally it may also appear on cherries, plums, Juneberry (also called Serviceberry or Saskatoon), and raspberry. This disease, caused by the bacteria Erwinia amylovora, can damage blossoms, fruit, leaves, shoots, and branches. If it is not controlled, fire blight may kill the entire tree or shrub. Infected tissue cannot be cured, but will need to be removed from the tree to prevent further spread.

tall trees in the Black Hills

Junior Arborist Activity Guide

The Junior Arborist Activity Guide provides objectives, content, equipment and supplies needed to complete 8 modules of arboriculture instruction, helping schools and other educational programs to create a youth arboriculture program of their own.

Adult female emerald ash borer

Emerald Ash Borer Insecticide Treatment Options

Fact sheet about insecticide treatment options for protecting ash trees against emerald ash borer.