Ms Griffiths said it had taken a long time to get the ivy levels down and the Trust was now in the maintenance phase of the weed control programme, which would take a long time because it's not known how long the seeds are viable for.
"The funding from DOC will help us to target these plants and maintain what we have done in the past."
She said the local landowners had also helped to control the weed by creating a buffer zone on their properties.
"The plan now is to allow the forest to regenerate, which previously the ivy was preventing it from doing."
The bushland, which is privately owned, is located behind the Gwavas Garden property in Tikokino and has been kept intact by the same family which has owned the property for more than a century.
"It is amazing that this forest exists and that it wasn't levelled to make way for more farmland," Ms Griffiths said.
The project manager said this was just one of several reasons the particular piece of bush was so important to the Hawke's Bay region, and why the Trust was working so hard to preserve it.