The site of a former brewery near Lawrence has achieved the Historic Places Trust's top status.
Hart's Black Horse Brewery, at Wetherstons, was registered as a Category 1 listing on February 28.
Guardian of the daffodils Kim Murtagh said the recognition was deserved.
The Wetherstons site contains the old brewery, family home, and office, but is perhaps best known for its daffodils.
The 10ha field of daffodils at the old brewery site was first planted about 117 years ago, and attracted thousands of visitors in its heyday in the 1930s.
Over the years, the varieties cross-pollinated to provide a rare display, Ms Murtagh said.
She said the brewery, including the daffodil fields, met five of the values necessary for registration and seven of the criteria for Category 1. These historic places are ''places of special or outstanding historical or cultural heritage significance or value.''
The Historic Places Trust register says the Black Horse Brewery site has special significance as the site of an 1860s brewery, dating from Wetherstons' early gold mining period.
''The site has the potential to reveal more information on the operation of the brewery, and of the residential occupation of the site. The daffodil plantings are over 110 years old and are an important horticultural site,'' it states.
Ms Murtagh, who is a trustee of the Hart's Daffodil Charitable Trust, said the listing represented the culmination of eight years of research and lobbying for recognition.
''We've come a long way in the past eight or so years. I became involved in 2004, starting with hedge-clippers and a rake ... there was only one beam to cross the creek. It was quite scary.''
The four other trustees - landowner Ben Hart, Margaret Young (nee Hart), Craig Morrison, and Jenni Kini - were very enthusiastic about the brewery site and each brought different strengths and skills, she said.
The trust was now working towards creating a conservation plan for the area, and hoped to continue developing the site.
''I would love to see the house and office restored, maybe even create a brewery museum. There's so many areas to develop, we could rebuild the fun capital of the goldfields.''
