During the second world war, rose-hips came into their own in the form of rose-hip syrup, whose taste wartime children can recall as vividly as dried egg!
They are high in Vitimin C so when the war disrupted the usual sources of the Vitimin (citrus fruits mainly) the Government in 1941 under the Ministry of Health initiated a scheme of voluntary collection. The syrup was made by mincing, stewing and then crucially straining through a jelly bag the hips to remove prickly seeds, then boiled again with sugar and reduced to a syrup.
On a personal note, my Mum told me that during the war she and her family used to ride on their bikes out of London into Buckinghamshire to spend the day collecting rose-hips. Her Mum would then make up the syrup as my Mum was too old at 12 to be able to get it via the Ministry of Health scheme.
Apparently it is still made commercially today.
Haws are berries from the Hawthorn tree. Local legend has it that Joseph of Arimathea came to Britain with 11 other desciples some time between AD30 and 63. He travelled to Glastonbury in Somerset and thrust his staff in the ground where it took root and grew to become the original Christmas flowering thorn.
Young Hawthorn leaves are often the first wild green leaves that children eat and was universally known as 'bread and cheese'. Here is a quote from Flora Britannica "We would pick the red berries and green leaves in autumn - the leaf the bread, the berry the cheese".
Apparently these are only just about edible, not something I've tried myself!