Gertrude Jekyll and Ellen Willmott were two English horticulturalists who were honoured during Queen Victoria's Gold Celebrations. The Kate Sheppard rose was planted next to tributes to Jekyll and Willmott.
Monk said the planting was significant because of the rarity of the historic rose.
"It's about saving them for future generations. We've got roses going back to the 15th and 16th centuries. You can't just go out and buy them in a shop."
The rose is believed to be the only one in the Western Bay of Plenty and top rose grower Rob Somerfield was on hand to help plant it.
Monk paid tribute to the efforts of volunteers Ruth and Ed Dainty who spent countless hours of backbreaking work to transform what was a rocky patch of land into the beautiful historic rose garden of today.
"It's a beautiful garden. I think it's up there with some of the best botanical gardens in New Zealand," Monk said.
Ruth Dainty said she was proud to be part of the planting.
"Being a mum of four daughters who grew up ... girls can do anything. This [the planting] is remembering those that have gone before us and who have made our lives easier," Dainty said.
"They were ahead of their time."
Te Puna Quarry Park volunteer and committee member Jo Dawkins said the Kate Sheppard rose helped add to the "oasis" the reserve was.
"It's a magic place."