Emerald Ash Borer Status in Sioux Falls
In May of 2018, the Emerald Ash Borer (EAB) was discovered in Sioux Falls. EAB is an invasive pest that attacks and kills ash trees.
EAB Management Plan:
- A multi-year removal plan is being implemented.
-Select ash trees, located in 33 parks, will be removed beginning in September 2018.
- Pending approval of the 2019 City budget, select public right-of-way (parking strip) ash trees will be proactively scheduled for removal at NO CHARGE to the property owner. Removal will begin January 2019.
- Trees targeted for removal in 2019 will be marked with a blue “9” starting in October 2018. Residents with a marked tree will be notified prior to removal.
- Not every ash tree in the 2019 selected area will be marked and removed.
If a marked ash tree, located in your parking strip, was treated in 2018, or you intend to treat the ash trees located in your parking strip in 2019, please contact the Helpline Center by dialing 211 and ask to have your tree(s) removed from the list of trees slated for removal in 2019.
Emerald Ash Borer
Licensed ArboristsAll Licensed Arborists
Frequently Asked Questions
Our black, green, and white ash trees and their cultivars are all susceptible to attack. Emerald ash borer does not attack mountainash or ash-leaf maple (boxelder). These trees are not related to ash.
How to identify an ash tree
All ash trees have a compound leaf, meaning its leaves are divided into smaller leaflets. Ash trees exhibit an opposite leaf pattern, meaning that leaves and buds are located directly across from each other. Ash leaves are compound and typically consist of 5-11 leaflets. The edges of the leaflets may be smooth or toothed. On mature ash trees, the bark has a distinct pattern of diamond-shaped ridges. Younger trees have smoother bark. When seeds are present, they appear in paddle-shaped clusters that stay on the tree until late fall or early winter. More information about identifying Ash Trees.
Green Ash Seeds
The map below shows the area for selective ash tree removal in 2019.
Approximately 1/3 of all ash trees in the tree removal area will be removed based on age, size, location, condition.
If your tree is not removed in 2019, a new area will be selected each year as part of the 10 year response plan. Upcoming areas will be released in the future.
Trees targeted for removal in 2019 will be marked with a blue “9” starting in October 2018. Residents with a marked tree will be notified prior to removal.
If your tree was treated by a licensed arborist, that record was passed on to the Parks & Recreation Department.
If you've treated the tree yourself, call The 211 Helpline and report what trees have been treated on your property.
Due to the Emerald Ash Borer (EAB) Beetle no longer actively moving, residents can safely move ash wood within the city limits and quarantine area until Memorial Day 2019.
Three drop-off sites are available for people wishing to dispose of ash wood.
27163 471st Avenue
Monday - Friday: 7 a.m. to 5 p.m.
Saturday 7 a.m. to 12 noon
46868 Sands Street
Monday - Friday: 8 a.m. - 5 p.m.
Saturday: 8 a.m. to 12 noon
There is no fee for disposal of wood products at these locations. For additional information, call 605-368-2440.
Sioux Falls Regional Sanitary Landfill
26674 464th Street
Seasonal hours can be found on the Landfill page.
Cost for disposal of wood products is $10 per ton of debris or $5 per truckload.
Note: The emergency plant pest quarantine imposed last May is still in effect and restricts movement of ash wood outside of Minnehaha County and portions of Lincoln and Turner Counties.
The emerald ash borer is a small beetle that was accidentally introduced from East Asia into the Detroit Michigan metro region sometime during the 1990s. Since that time, it has spread out into 32 states and three Canadian provinces including Minnesota, Iowa, and Nebraska. The emerald ash borer has killed nearly 100 million ash trees since the beetle was discovered in this country.
The larval (worm) stage of the insect feeds on the food-conducting tissue of the tree’s trunk severing the flow of food from the leaves to the roots. Infested trees usually survive for about five years before dying from the continual attacks.
The insect was detected and confirmed in South Dakota in May 2018. The infestation is located within the northern portion of the city of Sioux Falls. This is the only known infestation in the state at this time.
The answer is yes unless a tree is periodically treated with an insecticide indefinitely. Typically, a community loses all their untreated ash trees within a ten-year period following detection. Tree owners who live in Sioux Falls should consider treating their individual trees for this insect. It is not practical for large plantings.
There is no need to call the City, Cooperative Extension, or the SD Department of Agriculture to inspect your ash tree if you live within the city. If you want to protect your ash tree, it should be treated.
The most effective treatments for mature trees, those more than 6 inches in diameter, are treatment applied by commercial applicators. They have the equipment and chemicals to properly treat your tree.
Trunk injections can begin after the tree’s leaves have opened and until the end of June. Injections during this time provide the most effective protection. Injections may be made even later into the summer, but uptake of the chemical is slower to be distributed through the tree. However, it is still better to inject a tree in midsummer then wait until the following spring. Autumn applications can be made with some products for protection the following year but these need to be completed before the leaves begin to drop.
The injections will need to be repeated every 2 years until after the outbreak is over, approximately 10 to 12 years. After that time the period between treatments can lengthen to 4 years or more. The cost of treating a tree generally ranges from $150 to $350 for trees between 10 and 25 inches in diameter.
The emerald ash borer is attracted to fresh pruning wounds so do not prune your ash trees between Memorial Day and Labor Day. Ash trees should not be removed during this same time as adult beetles can emerge from logs and brush as it is being transported.
After Labor Day until the following Memorial Day the insect is inside the tree, so ash tree can be pruned. Ash wood and brush can be moved during this time, but it still must remain within the quarantine area.
There is a quarantine for Minnehaha, northern Lincoln (north of Hwy 18) and northeastern Turner (north of Hwy 18 and east of Hwy 19) Counties. No ash trees nor any ash brush, logs, or raw wood products such as ash firewood should be moved outside of this area. Contact your state (605-353-6700) or federal (605-244-1713) official prior to moving any of the above items outside the quarantine. Since firewood is difficult to identify to species, the restriction on firewood pertains to all hardwoods, not just ash.
If you are within the quarantine area the same restrictions for the movement of ash and firewood apply. Tree owners should consider treating their ash trees within the next few years as the insect will spread out beyond Sioux Falls.
There is no need to treat your trees nor are there any restrictions on pruning or movement of ash wood. However, ash tree owners may want to inspect their tree for signs of an infestation.
Infested ash will have sections of their bark shredded off by woodpeckers searching for the larvae. If the bark is pulled off these trees near the woodpecker pecks, there will be S-shaped tunnels on the wood’s surface. These narrow tunnels, about 1/8-inch wide, will be packed with sawdust. There may even be white, flat, legless larvae (about 1/2- to 1-inch long) in these tunnels. Another possible sign of an infestation is 1/8-inch D-shaped holes along the trunk where the adult beetles have emerged.
Emerald ash borer, an exotic insect responsible for the loss of more than 100 million ash trees in the United States over the past two decades, has now been discovered in Sioux Falls. This is the first confirmed infestation in South Dakota.
Emerald ash borer (EAB) was found in northern Sioux Falls. The South Dakota Department of Agriculture received confirmation on May 9 that the insect is indeed EAB. The confirmation was made by the Animal Plant Health Inspection Service (APHIS), a division of the United States Department of Agriculture. The infestation so far appears to be confined to a relatively small area. The South Dakota Department of Agriculture is conducting surveys to verify the extent of the infestation.
Expert Explanation of the Emerald Ash Borer
Dr. John Ball, Forest Health Specialist, SD Division of Resource Conservation and Forestry/Extension Forestry Specialist, South Dakota State University, phone 605.695.2503. email email@example.comJump to
00:45 - Status of EAB
3:00 - How to know if your tree is infested
13:15 - What should we do now?
31:00 - Licensed Arborist list available at top of this page
36:30 - What is The City of Sioux Falls' plan?
40:37 - USDA APHIS presentation