Trees
All Trees Content
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.
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.
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.
Emerald Ash Borer Insecticide Treatment Options
Fact sheet about insecticide treatment options for protecting ash trees against emerald ash borer.
How to Identify an Ash Tree Infested by Emerald Ash Borer
This guide will help you determine whether an ash tree may be infested by the emerald ash borer.
Huge Wasps on My Tree! No, Those Still Aren’t Murder Hornets.
Another insect that has been mistaken for the Asian giant hornet (also known by its media-popularized name of ‘murder hornet’) is the horntail wasp. Horntail wasps are wood-boring insects that are harmless to humans, as they do not have venom and cannot sting.
June 2019 Climate Outlook for South Dakota
As South Dakota emerges from the wettest 12-month period in 124 years of climate recordkeeping (June 2018-May 2019), June has started warmer and drier than average. The outlook, however, turns towards cooler and wetter than average again for the middle of the month.
July 2019 Climate Outlook: Challenges Continue
This year’s seasonal pattern of wetter than average conditions is projected to continue through July and the rest of the summer season. The latest climate outlook, released June 20, 2019, shows an increased chance of wetter than average conditions in the next one to three months for the state of South Dakota.
Wet Conditions Likely Into Fall Season
Many locations in South Dakota have already received as much precipitation this year as they do in an entire average year. The latest climate outlook from NOAA’s Climate Prediction Center shows increased chances of wetter than average conditions to continue into the fall season.
August 2019 Climate Outlook: Cool and Wet
According to the latest climate outlook update, odds are favoring that August 2019 will be cooler than average. The update was released by NOAA’s Climate Prediction Center on July 31, 2019.