Photo 30143657, (c) Dave Holland, some rights reserved (CC BY-NC), uploaded by Dave Holland

Attribution © Dave Holland
some rights reserved
Uploaded by dave_holland dave_holland
Source iNaturalist NZ
Associated observations

Photos / Sounds

What

European Holly (Ilex aquifolium)

Observer

dave_holland

Date

January 12, 2019 11:03 AM NZDT

Description

An horrific find!

Bird dispersed seedlings of this terrible weed in the middle of a large remnant lowland podocarp sand dune forest. As far as I am aware this is THE only forest of it's type left.

The heavily browsed under story from years of cattle (gone) and deer (high numbers historically and presently) have reduced the understorey to unpalatable species only and let the light in. Now this ecosystem which in it's natural state would have been too dark for exotic plants to invade, is extremely vulnerable to bird dispersed invasive weeds spreading from the adjacent villages of Papatowai and Maclennan.

Recorded in this forest already in descending order of abundance are:

Blackberry abundant in places on edges as usual.
Himilayan Honeysuckle.

Darwin's Barberry. Common in edges and moving further in.

Rowan. Common in one corner.

Himalayan Cotoneaster abundant in edge and in clearings on landward side, seedlings in other edges.
European Holly. Only this patch of seedlings seen (but there will definitely be more especially on the Maclennan side).
Common Honeysuckle (Probably "Dutch Early Honeysuckle" Lonicera periclymenum var Belgica. One patch, on edge.
Cherry Laurel. Seedlings under beech canopy.

Probably here as young plants or seedling pioneers already (due to abundance close by) but not observed
yet in this block - unless the deer are cleaning them up:

Common Ivy.

European Black Elderberry
Spurge laurel
Chilean Flame Creeper.

Franchet's Cotoneaster.

Stinking iris.

Tutsan
Flowering currant
Bittersweet

Other bird dispersed invasive weeds (and potentials) found to date, close by in urban gardens and doc/Council land, but are still in the pioneer stage of invasion but not for much longer :

Wild Cherry
Japanese Flowering Cherry
"Wild" plum
Late Cotoneaster
Hollyberry Cotoneaster
Slender Cotoneaster
Japanese Honeysuckle
At least two "Rose of Sharon" St John's Worts
Arum lily.

Common privet.

Strawberry Tree
Korokia
Japanese Spindle Berry
European Spindle Berry
Black cherry (tbc)

Italian Arum
Gooseberry
Hardy Fuschia
Black Currant
Several other exotic fuschia
Himilayan Firethorn (tbc)
Common Yew
Wild Asparagus
Chilean Vanilla Tree

There will be more i haven't found yet. Will add information as it comes to light.

And that's just the bird dispersed ones! There are other weeds too that need attention.

Sizes