Gro-low Fragrant Sumac
Rhus aromatica 'Gro-low'

Gro-low Fragrant Sumac

2a–8bHardiness zone
SpringSummerFall
Background

'Gro-low' is a low-growing selection of fragrant sumac that stays around 2–3 ft tall and spreads 6–8 ft wide, so it works as a woody groundcover rather than a shrub in the usual sense. Small yellow catkin-like flowers open on bare stems early in the year, before the glossy three-leaflet leaves emerge. The leaves smell resinous and citrusy when crushed, hairy red fruit clusters ripen through summer and feed birds, and in autumn the foliage turns red, orange, and purple.

Its value is in tough sites. It handles dry, thin, rocky, and clay soils, full sun to part shade, and the cold of zone 2, and it roots where low stems touch the ground, which knits a bank together. That makes it a standard answer for erosion control on slopes, road cuts, and the hot strip beside pavement. It dislikes wet feet, so give it drainage and skip the rich soil and heavy feeding that make it floppy. Because the leaf has three leaflets, people often mistake it for poison ivy; it is a different plant, but learn the two apart before clearing a bank. Where the species itself is wanted at 3–6 ft, buy plain fragrant sumac instead.

Care guide
SunSun to part shade
WaterLow to moderate
SoilWell-drained, tolerates poor and dry
Spacing6–8 ft
Height2–3 ft
Zone2a – 8b
Native Region
Native range, from wild records. Select a state for its native plants.

Ecoregions:Eastern Temperate Forests

Frost hardy
Seasonal tasks
winter
watchOrder container-grown plants - about two months before planting
spring
cutCut a tired or overgrown planting back hard before growth starts. It resprouts vigorously from the base.
plantPlant container-grown shrubs once the ground is workable, spacing 6–8 ft apart on a slope. Water in well and mulch until the stems knit together.
summer
watchWater newly planted shrubs weekly through their first dry stretches. Established plants need little or none.
fall
watchEnjoy the leaves turning red, orange, and purple. Dull color often means the soil is too rich or too wet.
Common problems

Powdery mildew

Symptoms

White or grey powdery coating on leaves - usually starting on older growth in humid conditions or when nights cool.

Treatment

Improve air circulation by thinning plants. Apply neem oil or potassium bicarbonate spray at first sign. Avoid overhead watering.

Fungal leaf spot

Symptoms

Brown or purplish spots on the leaves, often ringed with a yellow halo, that spread and merge in warm, humid, or wet weather; heavily spotted leaves yellow and drop early.

Treatment

Pick off spotted leaves and clear fallen debris to remove overwintering spores. Improve air circulation by thinning, and water at the base so foliage dries quickly. If it persists, apply a copper- or sulfur-based fungicide at the first sign.