Speckled alder

Alnus incana subsp. rugosa

Growzone: 3 - 6

You are currently in growzone:

Plant Options

Potted Prices
Height1-5050+
2' - 3'$18.00$18.00
3' - 4'$21.50$21.50
4' - 5'$25.00$25.00

Description

Description

Speckled alder is a smaller, multi-stemmed, and sometimes thicket-forming tree that is appropriate for planting under power lines. Early spring flowers are interesting, but not showy. This tree may be difficult to find in local nurseries.

Leaf description:
The oval leaves are 2 to 4 inches long and alternately arranged with doubly-toothed edges. The upper leaf surface is dull green and the lower surface is grayish. There is little color change in the fall.

Flower description:
Flowers are monoecious, meaning both male and female flowers are produced on the same tree. Male flowers appear in dangling catkins and are yellow-red in early spring before leaves appear while female flowers are small, pink, and egg-shaped.

Fruit, cone, nut, and seed descriptions:
The fruit are cone-like structures composed of winged seeds. In the fall they change to reddish-brown and add winter interest for both humans and birds.

Plant Care:
Speckled alder grows best in full sun to part shade in moist sites and can tolerate short-term flooding.

List of pests, diseases, and tolerances:
Potential problems include cankers, alder aphids, Japanese beetles, and leaf miners.

  • Size range: Large shrub (more than 8 feet), Compact tree (10-15 feet), Small tree (15-25 feet)
  • Mature height: 15-25 feet
  • Mature width: 15-25 feet
  • Light exposure: Full sun (6 hrs direct light daily), Partial sun / shade (4-6 hrs light daily)
  • Hardiness zones: Zone 3, Zone 4, Zone 5 (Northern Illinois), Zone 6 (City of Chicago)
  • Soil preference: Moist, well-drained soil, Wet soil
  • Tolerances: clay soil, Dry sites, Occasional flooding, Wet sites
  • Season of interest: early winter, midwinter, late winter
  • Growth rate: Fast, Moderate

Contact

Make an enquiry

I am interested in: