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Wetland zone 2: Wet soils

http://www.gw.govt.nz/wetland-zone-2-wet-soils

Wetland zone 2: Wet soils

Updated 20 August 2014 11:41am

Key to plant suitability:

1. Needs some exposure to the elements (frost, sun, wind and salt)

2. Tolerant of some exposure

3. Poor or no tolerance to exposure

 

Species
Frost
Sun
Wind
Salt
Attracts birds
Height
Oioi
Jointed rush
Apodasmia similis

2

1

1

1

 

1.2m

Slow-growing rush-like plant. Most common along the coast and in estuaries but also found inland on the eastern margins of Lake Wairarapa.

Machaerina rubiginosa

2

1

2

3

 

1.5m

Slow-growing sedge, usually found in low to medium fertility soils. Only available at specialist nurseries.

Cutty grass
Carex geminata

1

1

1

3

Yes

0.8m

Fast-growing sedge that spreads by rhizomes.

Carex lessoniana

1

1

1

3

Yes

0.8m

Very similar to Carex geminata. Also good at stabilising streambanks. Both species are often seen growing 'wild' in roadside ditches.

Carex maorica

1

1

1

3

Yes

0.7m

Fast-growing tussock-forming sedge.

Pūrei
Carex secta

1

2

2

3

Yes

2m

Fast-growing tussock-forming sedge with a trunk formed from its tightly-matted roots.

Pūrei
Carex virgata

1

1

2

3

Yes

1m

Fast-growing tussock-forming sedge.

Mingimingi
Coprosma propinqua

1

2

1

2

Yes

3m

Moderate to fast-growing shrub that grows well in dry to boggy soils. Produces bird-dispersed white/blue fruit in the spring.

Swamp coprosma
Coprosma tenuicaulis

2

2

1

3

Yes

3m

Common in swamps and bogs with low to medium fertility soils.

Tī kōuka
Cabbage tree
Cordyline australis

1

1-2

2

2

Yes

12m

Fast-growing tree. Pioneer. Hardy plant that tolerates wet and dry soils. Good for erosion control.

Toetoe
Austroderia fulvida

1

1-2

1

2

Yes

1.5m

Fast-growing clump-forming grass. Pioneer plant. Rats and stoats can inhabit stands.

Toetoe

Austroderia toetoe

1

1-2

1

2

Yes

1.5m

Fast-growing clump-forming grass. Pioneer plant. Can also grow on poor and dry soils. Rats and stoats can inhabit stands.

Toetoe upoko-tangata
Giant umbrella sedge
Cyperus ustulatus

2

1

1

1

Yes

1m

Moderate-growing tussock-forming sedge. Pioneer plant, often found growing with harakeke and toetoe.

Kahikatea
White pine
Dacrycarpus dacrydioides

1-2

1-2

2

3

Yes

40m

Moderate-growing tree. Plant with shelter to get established. Prefers sites that are periodically wet. Possum-hardy.

Slender spike sedge
Eleocharis acuta

1

1

2

2

 

0.5 - 0.9m

Moderate-growing sedge that spreads by rhizomes. Grows most places including salt marshes and alpine tarns.

Wīwī
Leafless rush
Juncus edgariae

1

1-2

1

2

Yes

1m

Fast-growing rush that is unpalatable to livestock. Grows in clumps, difficult to distinguish from other rushes.

Sea rush
Juncus kraussii var. australiensis

2

1

1

1

 

1m

Moderate-growing rush that is unpalatable to livestock. Forms clumps. Occurs in brackish water and coastal sandy soils.

Leafless rush
Juncus sarophorus

2

1

1

2

Yes

1.2m

Fast-growing rush. Pioneer, forms clumps and is unpalatable to livestock.

Mānuka
Leptospermum scoparium

1

1

1

1-2

Yes

5m

Fast-growing hardy pioneer, useful as a nurse crop. Grows on a wide range of soils from low to medium fertility. Good habitat for insects.

Harakeke
NZ flax 
Phormium tenax

1

1-2

1

1

Yes

2.5m

Fast-growing hardy pioneer. Withstands 5cm of water flooding as well as dry soils. Unpalatable to possums. Attracts nectar-feeding birds. Can be easily split into small fans or grown from seed.

Saltmarsh ribbonwood
Plagianthus divaricartus

2

1

1

1

 

2.5m

Slow-growing shrub. Pioneer species. Will grow along the margins of salt marshes and estuaries, in dune hollows and coastal gravels. Reasonably tolerant of browsing.

Three-square
Schoenoplectus pungens

2

1

1-2

1

Yes

0.8m

Summer-green perennial. Grows well in estuaries and tidal areas. Easily propagated by division.

Maire tawake
Swamp maire
Syzygium maire

2

2

2

3

Yes

15m

Moderate-growing tree. Very palatable to possums. Attracts insects and birds that feed on its nectar and red berries.