Why is the name Great Northern Bean capitalized?

The name "Great Northern Bean" is capitalized because it refers to a specific type of bean, similar to how you would capitalize "Red Delicious Apple" or "Fuji Apple".

Here's why it's capitalized:

* It's a proper noun: Great Northern Bean is a specific, recognized variety of bean, like a brand name.

* It's a cultivar name: Cultivar names, which describe specific varieties of plants, are usually capitalized.

Just like you wouldn't write "red delicious apple" or "fuji apple", you wouldn't write "great northern bean" without capitalization.