Common Mountain Ash / Rowantree / Oakleaf Mountain Ash (Sorbus aucuparia)
Ideal Location:

Soil type preference: Prefers well drained soils; does not cope well with clay. Tolerates sand and loam.
pH preference: Prefers acidic soils. Ideal pH range: 5.5-7.5.
Moisture preference: Prefers moist soils. Intolerant of drought.
Light preference: Full sun.
Salt tolerance: Intolerant of salt spray and soil salt.
Other: More prone to pest problems in warm areas.
Pest susceptibility and tolerance: No major pest problems. Despite the name, not a true ash; will not be affected by Emerald Ash Borer. Stressed trees especially susceptible to borers, fire blight, and cankers, along with several other pests.
Notable foliage and flower characteristics: White, flat-topped flowers, smooth gray bark, and clusters of bright red fruit which stay on the tree into winter. Some cultivars have different colors of berries. Yellow to reddish-purple fall color.
Height and spread: On average, gets 20-40 feet tall and 8-20 feet wide. Rapid grower.
Form: Round, oval. Useful as a shade tree or a specimen. Not recommended as a street tree.
Native status and zone: Zones 3-6. Non-native, but naturalized (found in natural areas and non-invasive).
Other information: Attractive to birds.

Example photograph:

Source: Maya Gilmore. Taken in Downtown Sheridan, 2019.

City of Sheridan

Medium Broadleaf