Weeds caus­ing wa­ter­way havoc

Central Leader - - NEWS -

Two banned and highly de­struc­tive weeds – wa­ter hy­acinth and salvinia – need to be erad­i­cated and Auck­land Coun­cil wants your help.

Coun­cil and the Min­istry for Pri­mary In­dus­tries want res­i­dents to re­port any fresh sight­ings of the weeds to 0800 80 99 66.

Con­trac­tors will visit and re­move the weeds for free if they find them.

Salvinia is a small, freefloat­ing aquatic fern with branched, hor­i­zon­tal stems that lie just be­low the wa­ter sur­face. The up­per sur­face of the leaf is cov­ered with dis­tinct white hairs.

The weed has the po­ten­tial to cause huge dam­age to wa­ter­ways, na­tive aquatic plants and fish.

They can clog wa­ter­ways, mak­ing al­most all wa­ter ac­tiv­i­ties im­pos­si­ble and in­creas­ing the dan­ger of drown­ing to hu­mans and live­stock.

Both weeds are present in the Auck­land re­gion and are known for grow­ing rapidly to form large dense float­ing mats on ponds, drains, lakes and still wa­ters in swamps.

Kills oth­ers: Wa­ter hy­acinth has a dis­tinc­tive blad­der-like swollen leaf and thick masses of feath­ery dark roots that can reach 2.5m in length.

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