Fraxinus lanuginosa – Japanese Ash or Tamo

 

Fraxinus lanuginosa, commonly known as Japanese Ash or Tamo, is native to Japan and the south east corner of Russia.

Position: Full sun

Flowering period:Late spring

Soil: Moist, well drained

Eventual Height: 15m

Eventual Spread: 10m

Hardiness: 5b, 6a, 6b, 7a, 7b, 8a, 8b

Family: Oleaceae

Also see London Trees & Shrubs – The Ash Tree

Fraxinus lanuginosa is a deciduous tree with a round habit. Its mid green leaves are opposite, odd pinnate, up to 15cm long with up to 7 leaflets. Its leaflets are ovoid with serrulate margins, up to 7cm long and 4cm broad. Its leaves turn yellow to purple in autumn before they fall. Its trunk may achieve a diameter of up to 50cm. Its bark is dark grey and smooth. Its cream/ white flowers are produced in panicles, each flower is composed of four petals and are up to 7mm long. Its fruit is a sumara which is up to 4cm long and 5mm broad, it is initially reddish ripening to brown.

fraxinus-lanuginosa-leaf Fraxinus lanuginosa - Japanese Ash or Tamo

Fraxinus lanuginosa Leaf (19/09/2015, Kew gardens, London)

 

 

 

 

 

 

 

The etymological root of the binomial name Fraxinus is from the ancient Latin name for this tree.
Lanuginosa is derived from the Latin lanugo meaning ‘downy’.

The landscape architect may find  Fraxinus lanuginosa useful as an attractive parkland or street tree with attractive flowers and autumn leaf colour. This tree is tolerant of urban pollution.

fraxinus-lanuginosa-autumn-leaf Fraxinus lanuginosa - Japanese Ash or Tamo

Fraxinus lanuginosa Autumn Leaf (19/09/2015, Kew gardens, London)

Ecologically,  Fraxinus lanuginosa flowers are attractive to pollinating insects. Its fruit are attractive to some birds and mammals.

Fraxinus lanuginosaprefers moist, fertile, well-drained soils. It tolerates most pH of soil.

Fraxinus lanuginosa requires little maintenance. Necessary pruning should be carried out in late winter.

fraxinus-lanuginosa-autumn-leaf Fraxinus lanuginosa - Japanese Ash or Tamo
Fraxinus lanuginosa, commonly known as Japanese Ash or Tamo,
fraxinus-lanuginosa Fraxinus lanuginosa - Japanese Ash or Tamo
Fraxinus lanuginosa, commonly known as Japanese Ash or Tamo,
fraxinus-lanuginosa-leaf Fraxinus lanuginosa - Japanese Ash or Tamo
Fraxinus lanuginosa, commonly known as Japanese Ash or Tamo,

Source: Fraxinus lanuginosa | landscape architect’s pages

Post Author: LondonArborist