PL. —Abelia × grandifloraBotanical illustration — drop image

Abelia × grandiflora

Glossy Abelia

SpringSummerFall

6a–9bHardiness zone

Peak bloom windowZone 6b · frost-offset weeks

Winter

Not in bloom

Spring

Peak bloom

Summer

Peak bloom

Fall

Not in bloom

Peak bloom

In bloom

Peak bloom windowZone 6b · frost-offset weeks

Winter

Not in bloom

Spring

Peak bloom

Summer

Peak bloom

Fall

Not in bloom

Peak bloom

In bloom

Background

Abelia × grandiflora is a semi-evergreen hybrid shrub in the honeysuckle family, produced by crossing A. chinensis with A. uniflora. It produces small, tubular, white to pale-pink flowers from late spring through fall—one of the longest flowering windows of any shrub in its size class. The persistent reddish-purple calyces hold ornamental color weeks after the flowers drop. Butterflies and hummingbirds visit it heavily throughout the season.

It forms a rounded, arching mound and behaves differently by zone: fully evergreen in zones 8–9, semi- to fully deciduous in zones 6–7 depending on winter severity. The shrub tolerates a range of soil types and moderate drought once established but performs best in slightly acidic, well-drained soil. In zone 6, mulching the root zone to 3 in reduces winter dieback to the root crown. Old, congested plants respond well to hard rejuvenation pruning every few years.

Good companions

English Lavender Russian Sage Purple Coneflower Agastache

Care guide

SunFull sun to part shade

WaterModerate

SoilMoist, well-drained, acidic

Spacing4–6 ft

Height3–6 ft

Zone6a – 9b

Frost hardy

Seasonal tasks

spring

cutRemove dead, damaged, or crossing stems before new growth starts. Cut one-third of the oldest stems to the ground to open the canopy and stimulate fresh arching growth.

cutEvery 3–5 years, cut the entire shrub back hard to 12–18 in from the ground in late winter to rejuvenate congested plants and restore a compact, free-flowering habit.

sowPlant container-grown shrubs after the last frost date, spacing 3–6 ft apart in well-drained soil. Water thoroughly at planting and weekly through the first growing season.

summer

cutTrim wayward shoots lightly after the first main flush to tighten shape. Avoid heavy shearing, which removes flower buds forming on new growth.

watchCheck foliage during hot, humid spells for powdery mildew—a pale coating on upper leaf surfaces. Thin dense interior stems to improve air circulation.

fall

watchMonitor soil drainage around the root zone. Standing water after heavy rain can promote root rot; improve drainage with coarse organic matter if needed.

cutApply 3 in of mulch over the root zone before the first hard freeze to protect roots in zones 6–7.

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.

Root rot

Symptoms

Plants wilt, yellow, and stunt even in moist soil; lower stems and roots turn brown, soft, and mushy and the plant may collapse. Most common in heavy, wet, or poorly drained ground.

Treatment

Improve drainage and stop overwatering, and never plant too deep. Lift and destroy badly affected plants along with the soil around the roots. Grow in raised or free-draining beds to prevent it returning.

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.