Mentha canadensis

Photo: Mentha canadensis.
Photo: Mentha canadensis 0.

Flowering tops. This one contains at least twice as much menthol as the strongest peppermint, 'Mitcham'. MTT Karila research station, Mikkeli, Finland. Planted. 2001-08-13.
Photo: Mentha canadensis 1.
Photo: Mentha canadensis 1.

Flowering tops. MTT Karila research station, Mikkeli, Finland. Planted. 2001-08-13.
Photo: Mentha canadensis 2.
Photo: Mentha canadensis 2.

Flowers. MTT Karila research station, Mikkeli, Finland. Planted. 2001-08-13.
Photo: Mentha canadensis 3.
Photo: Mentha canadensis 3.

Flowering plants. Annala, Helsinki, Finland. Planted. 2004-08-17.
Photo: Mentha canadensis 4.
Photo: Mentha canadensis 4.

Peppermint and japanese peppermint. True peppermint flowers at the top, Japanese peppermint in the leafnodes. Annala, Helsinki, Finland. Picked. 2005-08-03.