Processed: infusing in oil. Sandnäsudd, Tammisaari, Finland. Wild. 2012-07-12.

Processed: infusing in oil. Sandnäsudd, Tammisaari, Finland. Wild. 2012-07-12.

Processed: Infusing in oil. Sandnäsudd, Tammisaari, Finland. Wild. 2012-07-12.

Processed: infusing in oil. Sandnäsudd, Tammisaari, Finland. Wild. 2012-07-12.

Flowerbuds. Bergianska trädgården, Stockholm, Sweden. Wild. 2012-07-05.

Leaf and flowerbuds. Bergianska trädgården, Stockholm, Sweden. Wild. 2012-07-05.

Leaf with lighter spots ("pinpricks") and darker spots (oils). Bergianska trädgården, Stockholm, Sweden. Wild. 2012-07-05.

Flowers. Bergianska trädgården, Stockholm, Sweden. Wild. 2012-07-05.

Flowering tops. Jussarö, Tammisaari archipelago, Finland. Wild. 2011-07-09.

Infused oil of St. John's wort. If you look through the oil towards the sun, you can see through it.
In this very dry summer, one oil didn't turn red at all -- until I crushed the herb in a blender. Tapanila, Helsinki, Finland. Processed. 2010-08-16.

Infused oil of St. John's wort. Tapanila, Helsinki, Finland. Processed. 2010-08-16.

Infused oils of St. John's wort from above.
In this very dry summer, one oil didn't turn red at all -- until I crushed the herb in a blender. Tapanila, Helsinki, Finland. Processed. 2010-08-16.

Infused oil of St. John's wort. If you look through the oil so that the sun shines onto it, it's opaque -- you can't see through it.
In this very dry summer, one oil didn't turn red at all -- until I crushed the herb in a blender. Tapanila, Helsinki, Finland. Processed. 2010-08-16.

Infused oil of St. John's wort. If you look through the oil towards the sun, you can see through it.
In this very dry summer, one oil didn't turn red at all -- until I crushed the herb in a blender. Tapanila, Helsinki, Finland. Processed. 2010-08-16.

The colorless St. John's wort oil from photos #25-28, with the herb crushed and the lot set out into the sun. It turned red immediately. Tapanila, Helsinki, Finland. Processed. 2010-08-16.

Closeup of flower. Vantaa, Finland. Wild. 1992-07-01.

Flowers and red color. Westers garden, Kemiö, Finland. Planted. 2002-08-10.

Closeup of flower. Ylästö, Vantaa, Finland. Wild. 1999-07-17.

Flowering plants. Ylästö, Vantaa, Finland. Wild. 1999-07-17.

Closeup of flower. Karis, Finland. Wild. 1999-07-14.

Flowering plants. Karis, Finland. Wild. 1999-07-14.

Closeup of flower. Ylästö, Vantaa, Finland. Wild. 1999-07-17.

Flower, closeup, and green seedpod. Annala, Helsinki, Finland. Wild. 2004-09-11.

Young shoots in spring. Perheniemi, Iitti, Finland. Wild. 2004-04-19.

Young shoots in spring. Perheniemi, Iitti, Finland. Wild. 2004-04-19.

Young shoots in spring. Perheniemi, Iitti, Finland. Wild. 2004-04-19.

Flowering plant. Vantaa, Finland. Wild. 1992-07-01.

Yellow flowers, and fingers stained purple. Bad Tölz, Germany. Wild. 2000-06-20.

Flowers in a basket. Perheniemi, Finland. Picked. 2006-07-10.

Flowers in a basket. Perheniemi, Finland. Picked. 2006-07-10.