The bounty from 20,000 planted daffodil bulbs will be available for picking at Carrington House in Carterton during the Daffodil Festival on September 13.
Owner Shirley Cameron said Carrington House has been opening for the festival for several years, asking for a gold coin donation for charity.
The daffodils were planted between 12 and 15 years ago, she said.
"You can pick as many as you want," she said.
"A gold coin donation goes towards the Life Flight Trust."