1. Blackberry
It's use as an anti-diarrhoeal is well documented both in humans and animals. The unripe red or even green berries can be used in the same way. The berries are full of vitamin C and minerals and can be made into a syrup to use against colds and flu. The leaves also contain a reasonable amount of vitamin C.
2. Amaranth
Amaranth is an edible weed. You can eat all parts of the plant, but be on the look out for spines that appear on some of the leaves. While not poisonous, amaranth leaves do contain oxalic acid and may contain large amounts of nitrates if grown in nitrate-rich soil. It’s recommended that you boil the leaves to remove the oxalic acid and nitrates. Don’t drink the water after you boil the plant. With that said, you can eat the plant raw if worse comes to worst.
3. Burdock
Well, Burdock is actually a popular food in Japan. You can eat the leaves and the peeled stalks of the plant either raw or boiled. The leaves have a bitter taste, so boiling them twice before eating is recommended to remove the bitterness. The root of the plant can also be peeled, boiled, and eaten.
4. Cattail
Most of a cattail is edible. You can boil or eat raw the rootstock, or rhizomes, of the plant. The rootstock is usually found underground. Make sure to wash off all the mud. The best part of the stem is near the bottom where the plant is mainly white. Either boil or eat the stem raw. Boil the leaves like you would spinach. The corn dog-looking female flower spike can be broken off and eaten like corn on the cob in the early summer when the plant is first developing. It actually has a corn-like taste to it.
5. Chicory
You’ll find chicory growing in Europe, North America, and Australia. It’s a bushy plant with small blue, lavender, and white flowers. You can eat the entire plant. Pluck off the young leaves and eat them raw or boil them. The chicory’s roots will become tasty after boiling. And you can pop the flowers in your mouth for a quick snack.
