During the 19th and early 20th Centuries fields of lavender could be seen all over Wallington, Sutton, Carshalton and Waddon.
The area helped companies such as Yardley build an international reputation in perfumery and bath luxuries.
Now the Local Lavender Project has developed a field on formerly disused allotments in Wallington and is harvesting its fourth crop.
Lavender uses
Scented bags
Floor and furniture cleaner
Disinfectant
Moth repellent
Jam, honey
Perfumery
Essential oil
Members of the public are being invited to go along and pick their own during the weekend of 27 and 28 July, and again on 3 and 4 August.
It began with cuttings collected from the public and grown in a horticulture project within nearby Downview Prison.
Later prisoners on day release helped BioRegional staff clear and plant up the two-and-a-half acres of disused allotments.
BioRegional was founded in suburban Sutton five years ago with the idea of sustainably producing local goods for local needs.
A group spokesman said lavender is in demand at the moment for beauty and health products.
Customers for the product include the local Body Shop, Covent Garden Flower Market and Sutton library, which sells bags of lavender at £1 each.
A BioRegional spokesman said that since the project began lavender has once again become part of the local identity with lavender Christmas lights and it has also appeared in local plays and parades.