NWS Chicago counted 615 tornadoes across its forecast area from 1950 through 2017, about nine a year, yet a derecho needs no tornado to break limbs across a whole region. On August 10, 2020, the derecho that crossed northern Illinois brought a measured 62 mph gust to O'Hare and gusts estimated at 60 to 70 mph in Schaumburg, while the Chicago office logged more than 160 damaging wind reports and 15 tornadoes. On July 15, 2024 the office confirmed 32 tornadoes, a record for one event, and none of the surveyed tracks crossed Palatine. Silver maple limbs, which the Morton Arboretum says break in high wind and ice without frequent pruning, are a known weak point in storms like these.
Underfoot is glacial ground. The Illinois Nature Preserves Commission places Deer Grove West, along Route 68 in Palatine Township, in the Morainal Section of the Northeastern Morainal Natural Division, with rolling, rugged terrain. NRCS series descriptions for the region's till soils tell the same story in numbers: Morley has up to 18 inches of loess over clay loam or silty clay loam till, with a seasonal water table 2 to 3.5 feet down from January to April, and Markham, described from a profile in neighboring DuPage County, is slowly permeable silty clay loam till. Clay like this compacts under trucks and skid steers, especially in wet spring weeks, and compacted soil starves roots of air, so a careful crew spreads mats or plywood before crossing a lawn.
Pests have already reshaped the local canopy. Emerald ash borer was first confirmed in Illinois on June 9, 2006, in a Kane County subdivision near Lily Lake, about 40 miles west of Chicago. By October 2008, Palatine's newsletter reported the beetle east, west and south of the village and described an ash reduction program to replace declining ash with a variety of species. The Morton Arboretum's 2020 regional tree census found standing ash down 46 percent from 2010, to 7 million, with about 4 million more dead or declining. Oak wilt occurs in every Illinois county, and Dutch elm disease still passes between elms through root grafts, which the Arboretum says are especially common in cramped suburban parkways.
The mix of housing changes who makes the call on a tree. CMAP's snapshot counts 42.5 percent of Palatine's homes as detached single-family houses and 15.5 percent as townhouses or other attached single-family units, while about a third sit in buildings of five or more units. Single-family lots cover 44 percent of the village's land, about 4,020 acres, and open space another 625 acres. A detached-home owner decides alone about a yard tree. In a townhouse or condominium community, the grounds may be controlled by an association, so a resident should check who decides before asking any crew for a price.
Utility and disposal rules shape every job. ComEd asks customers to call it before trimming near its conductors and to keep people and equipment at least 10 feet from lines, and OSHA's 1910.333 holds workers without line-clearance qualification, and any conductive tool they carry, to the same 10 feet from energized lines of 50 kV or less. JULIE's rule covers any project that disturbs the ground, whatever its depth, so a stump grinder waits for notice filed at least 3 and no more than 10 days ahead, weekends and holidays excluded. Brush cannot be burned: Illinois EPA rules allow landscape waste to be burned where it was produced except in counties of more than 400,000 people, and Cook County counted 5,275,541 in 2020.
Oaks are part of the village's oldest landscape. Deer Grove, the county's first forest preserve, covers nearly 2,000 acres near Palatine and Barrington, with rolling upland forest, wooded ravines, wetlands, prairie, restored savannas and oak woodlands, and restoration work there began in 2008. Its West Woodland and Wetland section, 1,035 acres, was dedicated as an Illinois nature preserve in August 2009 and has more than 300 recorded plant species. An oak in a yard answers to the same biology as one in the preserve: the Morton Arboretum advises no oak pruning from mid-April to mid-October, and trees of the same species within about 50 feet can graft roots and share oak wilt.