Introduced species chart - habitat

species type prefered site unsuitable sites conservation value insects supported comments
Beech
Fagus sylvatica
F Tolerates a wide range of soils.
On shallow and poorly drained soils it is unstable. Best on well drained soils.
Doesn’t like poorly drained sites. Doesn’t do well on peat/acid soils. “mast” is food for finches wood pigeons and mice. 64 Grows well in NI to form fine specimen trees. Casts a very dense shade when mature. Much used for hedging due to persistent leaves.
Horse chesnut
Aesculus hippocastanum
F Tolerates a wide range of soils and grows well on clay. Doesn’t like poorly drained and infertile sites.   4 Best known for its conkers. Needs a large site. A large handsome tree. Easily grown.
Lime
Tilia vulgaris
F Prefers a rich fertile soils. Likes clay sites. Doesn’t like in infertile soils or exposure. Produces lots of nectar for bees. 31 Traditionally planted in avenues. Well-known for producing lots of suckers. Seed not usually fertile.
Sycamore
Acer pseudoplatanus
F Very tolerant of exposed coastal sites. Extremely tough. Avoid very wet sites. Will grow almost anywhere. Does produce a large biomass of the insects it does support. 15 Will grow on coastal sites where no other tree will. Very invasive in woodlands.
Crack willow
Salix fragilis
f Prefers ditch or waterside sites Do not like dry sites or acid soils. Older specimens often develop holes used by nesting birds. Good for insect life.   Often pollarded.
White willow
Salix alba
f Prefer damp/wet soils. Ideal for streambanks. Do not like dry sites or acid soils. See Willow, all.   Very fast growing


KEY

F = high forest tree
f = minor forest tree