Whetman Pinks is supplying its award winning Dianthus 'Memories' to Homebase which hopes to raise £20,000 through sales of the plant.
Every sales of the plant will see 25p go towards supporting people living with dementia. Homebase hope to raise its £20,000 for the Alzheimer's Society by selling 80,000 plants.
Homebase social responsibilities head Amy Whidburn said: "There really is no place like home and familiar aspects of gardening can prompt reminiscence. We’re excited to be selling the hardy 'Memories' flower, which makes a great addition to a dementia friendly garden, as well as raising vital funds for Alzheimer’s Society."
Homebase has 323 stores, while Whetman Pinks grows five million plants a year.
Homebase has a show garden at Chelsea backed by the Alzheimer's Society and designed by Adam Frost this May.
In 2013 Whetman Pinks won the Queen’s Awards for Enterprise for International Trade and was voted Overall Grower of the Year at the Horticulture Week UK Grower Awards.