All varieties of pecans are edible, so you don’t need to worry about which kind of pecan you’ve found. Pecan nuts on the tree are contained in their shells in an outer husk or hull.

What color are ripe pecans?

They are a perfect golden color or light brown. Pecans that are darker shades than this tend to be more bitter and sometimes even rancid. Rancidity and the darkening of the pecan kernel are the result of oxidation.

Can pecans be poisonous?

Toxins In Pecans Pecans contain a toxin called juglone. If they get moldy, pecans can cause seizures and neurological symptoms due to their production of tremorgenic mycotoxins. More dangerous still, pecans are tree nuts that contain a natural poison called aflatoxin.