Firehouse Sweetgum

Firehouse® sweetgum is a pyramidal shade tree with dark green, lobed leaves that turn bright red in fall. The JFS KW1LS cultivar has a strong central leader and upright branch angles, with a listed mature size of about 50 feet tall by 25 feet wide. ## Form and seasonal interest The [J. Frank Schmidt & Son Co. Firehouse profile](https://jfschmidt.com/all-trees/introductions/firehouse-sweetgum/) identifies the cultivar as *Liquidambar styraciflua* ‘JFS KW1LS’ and reports USDA Zone 6, a 50-foot height and 25-foot spread. It notes that the original Oregon street tree defoliated earlier than nearby sweetgums and showed little ice or snow damage; this is a reported observation, not a guarantee for every site. The cultivar’s seed production was described as extremely light to none. ## Siting Give this large tree room to develop its broad pyramidal crown and avoid planting it beneath overhead wires or close to paving where roots and mature spread will be constrained. North Carolina Extension describes the species as adaptable to full sun or partial shade and moist, well-drained neutral to acidic soil. Sweetgum foliage gives strong fall color, while the tree’s shade and vertical framework make it suited to larger yards, parks and streetscapes. ## Maintenance Water deeply during establishment and during prolonged dry spells, then keep the root zone mulched without piling mulch against the trunk. Prune selectively in winter to establish a sound structure and remove damaged or crossing branches; avoid topping the central leader. The species can make round, spiny seed capsules, so expect some litter if this cultivar produces fruit even though its breeder reports sparse seed production. Check access and paved areas before planting.