Eucalyptus petiolaris is a small to medium tree with an upright to spreading habit and a rounded, open crown. The leaves are narrow to lance-shaped and mid green, creating a fresh, soft canopy. Clusters of small flowers appear from winter through spring, ranging from cream and yellow to pink or red. In Melbourne gardens it typically grows around 8–12 m high and 5–8 m wide, making an attractive shade or feature tree for larger garden spaces and naturalistic plantings.
This species occurs naturally on the southern Eyre Peninsula of South Australia, growing in open woodland and valleys, often near creeks on well-drained sandy or loamy soils in a dry Mediterranean climate. In cultivation it prefers full sun and well-drained soil, tolerating sandy, loamy and mildly alkaline conditions. Once established it is drought tolerant and handles light to moderate frost in Melbourne gardens. Pruning is usually limited to early shaping, and fertiliser should be applied sparingly using low-phosphorus products.