Since EAB’s confirmed presence in Brookings, canopy thinning starting at the top of the tree, D-shaped exit holes, bark splitting exposing S-shaped larval tunnels, and unusually heavy woodpecker activity are all worth acting on rather than watching. If your ash is a boulevard tree, the city Forestry Division can help assess it as part of…
Brookings is one of the few cities in this guide where cost depends heavily on where the tree sits. Boulevard ash: removal and stump grinding are free through the city program; you’re on the hook for topsoil, reseeding, and a permit if you replant. Private-property ash: treatment or removal is a normal homeowner expense, priced…
For private-property ash, look for an ISA Certified Arborist with insurance and direct familiarity with EAB conditions in Brookings County specifically, since the county’s quarantine status and the city’s active removal program are recent enough that not every regional provider will be current on local specifics. Ask how they coordinate (if at all) with city…
If the city removes a boulevard ash under its EAB program, replacing it isn’t automatic — a planting permit is required before putting a new tree in that boulevard strip. This exists to manage species diversity going forward (part of why the city has been proactively thinning weaker ash since 2018) and to keep new…
Emerald ash borer was confirmed in Brookings in July 2024, and Brookings County was added to South Dakota’s state Plant Pest Quarantine the same month. Since 2018, the city’s Forestry Division has been proactively thinning weaker boulevard ash in anticipation of exactly this, and the city now removes and grinds boulevard ash trees at no…
Late winter dormant-season pruning is standard for most Brookings shade trees. Avoid pruning oaks between April and July to reduce oak wilt risk.
Look for ISA certification, insurance, and a clear pruning approach. Given confirmed EAB in Brookings, a provider who can assess ash health alongside routine trimming is a useful combination.
Cost depends on tree height, scope of work, and access. Get quotes that specify what’s included — deadwood removal only versus a full structural prune are very different jobs at different price points.
Crossing or rubbing branches, visible deadwood, and a dense canopy blocking light to lower limbs are the common signs. On or near SDSU-adjacent residential blocks with mature boulevard trees, low-hanging limbs near sidewalks are also worth addressing before they become a bigger job.
Late winter dormant-season pruning is the standard recommendation for most Brookings shade trees. Oaks should be pruned outside the April–July window to reduce oak wilt risk. For ash trees, given Brookings’ confirmed EAB presence, pruning decisions are usually folded into the broader treatment-or-removal conversation rather than handled as routine trimming, especially for boulevard ash the…