No. I have a nightshade allergy and spinach does not make me sick; I have another friend with a similar allergy who can also eat spinach. Most lists of nightshades I have found online do not contain spinach; https://secure.wikimedia.org/wikipedia/en/wiki/Spinach does not list Solanaceae.
No it is part of the Lily Family.
The Tagalog word for spinach is "espinaka" or "alugbati".
Yes, along with tomatoes and potatoes
No, it is in the Rosaceae family.
The spinach family
No
No, the prune is not a member of the nightshade family. It numbers among members of the Rose family, scientifically called Rosaceae, not of the nightshade family, scientifically known as Solancaeceae. It serves as the dried form of the plum genus Prunus.
The spinach family
Nightshade
No. Spinach is in the Chenopodiaceae family while lettuce is in the Compositae family of vegetables.
No, a horse should not eat peppers. Peppers are part of the nightshade family and can be considered toxic to horses.