Question

The juices of which flower were used to make glue in the past?

Answer 1

The juices of the iris flower were used to make glue in the past. The sap was boiled and mixed with various ingredients such as vinegar and egg whites to create a strong adhesive. However, this practice was discontinued as it was not very effective and other types of glue were developed.

Answer 2

The juices of the Euphorbia lathyris flower were used to make glue in the past. It is a species of spurge native to Europe and western Asia and is also known as the "gopher plant".