what were these plants used for during the colonial times?Flax, Viper bugloss,and Garlic?

Question

colonial times

Answer 1

Flax
was used to make raw linen.
http://www.nps.gov/archive/colo/Jthanout/FlaxProd.html
Viper Bugloss
Viper’s Bugloss (Echium vulgare)
This is an example of a wildflower that received an undeservedly frightening name based simply on its looks. Also called Viper Grass, and Thistle Blueweed, this bristly blue and pink wildflower has a genus name that comes from the Greek word “Ekbis” meaning “viper”. Some people think the plants somehow create a hiding place for snakes, or that the plant is guilty of other serpent-related qualities, but it is not. The name is simply because someone long ago thought the flower looked like the head of a snake.
Use was a wildflower perhaps for some medicinal purpose.
http://www.wildflowerinformation.org/WildflowerFolklore.asp
Garlic
THE BENEFITS OF THE USE OF GARLIC
IN HERBAL PREPARATIONS
HISTORY OF GARLIC
http://www.herballegacy.com/Motteshard_History.html
Garlic has been known has one of the oldest known horticultural crops in the Old World. Egyptian and Indian cultures referred to garlic 5000 years ago and there is clear historical evidence for its use by the Babylonians 4500 years ago and by the Chinese 2000 years ago.

You might find the link on garlic quite interesting.