Species

Sambucus nigraElderberry

5 other cultivars

shrubN. America Native

Korsor Black Elderberry

Sambucus nigra 'Korsor'

The Story

Plant Bio

Sambucus nigra 'Korsor' is a cultivar of black elderberry known for its large clusters of white flowers and edible berries. It has an upright growth habit and is often used for ornamental and culinary purposes.

This cultivar is particularly noted for its high yield of berries and its resistance to powdery mildew.

Uses & Benefits:

Provides striking dark foliage and fragrant flowers, enhancing garden aesthetics.

Serves as a natural privacy screen and wildlife habitat.

Supports pollinators like bees and butterflies, contributing to biodiversity.

SpeciesSambucus nigraElderberry

Essentials

At a Glance

Plant Type

Shrub

Height

120 inches

Width

120 inches

Light

Full Sun, Partial Sun

Zones

4, 5, 6, 7, 8

Water

Moderate

Humidity

Average

Lifespan

10+ years

Native To

Europe

Toxicity

Uncooked berries and other plant parts are toxic if ingested.

Bloom period

Early summer – Late summer

In flower about 3 months of the year

Planting

How to Grow

Tuck seeds in moist soil in early spring for best germination.
Water regularly to keep soil evenly moist during first year.
Mist cuttings with water weekly to encourage root development.
Transplant seedlings once they are strong enough, usually after one year.
Mulch around plants to retain moisture and suppress weeds.
Prune dead or weak branches in late winter for better growth.

Pro Tip

Use well-draining soil and avoid overwatering to prevent root rot.

Keep It Thriving

Care Guide

Do

Water consistently, especially during dry spells 🌱
Prune in late winter to shape and remove dead wood
Apply compost annually to enrich the soil
Monitor for pests regularly

Don't

Avoid overwatering, which can cause root rot ❌
Do not prune during flowering to preserve blooms
Refrain from using chemical fertilizers excessively
Avoid planting in areas with poor drainage

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Fertilize
Harvest
Prune

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Dark-leaved shrub for a dramatic borderPrivacy hedge with rich foliageDecorative focal point in mixed borders

Companion Plants

Roses Hostas Ferns Lavender Hydrangeas

Multiply

Propagation Methods

Good to Know

Common Questions

Korsor Black Elderberry questions

What zones can Korsor Black Elderberry grow in?

Korsor Black Elderberry is hardy in USDA Zones 4–8. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Korsor Black Elderberry deer resistant?

Yes — Korsor Black Elderberry is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.

When does Korsor Black Elderberry bloom?

Korsor Black Elderberry typically blooms in early summer through late summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Korsor Black Elderberry need full sun?

Korsor Black Elderberry does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.