Spaeth's Alder

Basisdaten

spaeths alder (Alnus spaethii) leaf
spaeths alder (Alnus spaethii) leaf
  • spaeths alder (Alnus spaethii) leaf
  • red maple (Acer rubrum) underside of leaf
  • spaehts alder (Alnus spaethii) leaves
  • Spaehts alder (Alnus spaethii) Flowers (m and f) female fowers are standing up
  • spaehts alder (Alnus spaethii) flower buds
  • spaehts alder (Alnus spaethii) the young fruit (cones)
  • spaeths alder (Alnus spaethii) twig with buds
  • spaehts alder (Alnus spaethii) trunk
  • spaehts alder (Alnus spaethii) crown in summer
  • spaehts alder (Alnus spaethii) tree in summer
  • Spaehts alder (Alnus spaethii) in Winter
description: 

The Spaeth's alder is a hybrid of Japanese alder (Alnus japonica) and Caucasian alder (Alnus subcordata). The alder is named after the botanist Franz Späth (25.2.1839-02.021913) named a nursery owner and botanist from Berlin.

Tree profile

name botanical: 
Alnus spaethii
family: 
Birch family (Betulaceae)
species: 
deciduous tree
height: 
10 – 15 m (33 - 49 ft)
leaf: 

The leaves of Spaerth's alder are ovoid, pointed and up to 16 cm (6.3 in) long. The underside of the leaf is matt green and brighter than the top. The leaf margin is serrated.

leaf shape: 
ovoid
leaf margin: 
serrated
leaf position: 
alternate
fall foliage: 
Violet - red
flowering: 
March
blossom color: 
yellow-reddish
blossom description: 

The male flowers (catkins) are conspicuous, about 10 cm (3.9 in) long and often hang on to fourth in a clump. The female flowers are inconspicuous.

gender distribution: 
monoecious
fruit: 

Small woody cones, first green then dark brown.

branches: 

Young twigs are gray-green, the older brown-green with many lenticels.

bark: 
The bark is gray-brown and slightly fissured.
root: 
Shallow-rooting plant, highly branched fine roots
location: 
Sun to half-shade
soil: 
sandy-loamy to loamy
ph value: 
slightly acidic to alkaline
usage: 

single tree, planting in groups. Urban green, street tree

Typical diseases for Spaeth's Alder

Typical fungi for Spaeth's Alder