"Spelled" is a perfectly cromulent word in UK English (the best English).

Interesting. I thought spelt and learnt were UK English.

They are UK English, but "spelled" and "learned" are in common usage too. I wouldn't consider it to be an Americanism if I read/heard those versions (I'm English, myself).

personally I prefer wheat.

Nope.

https://english.stackexchange.com/a/5714/

Long after the sword was smelt

In foreign lands did wielder welt.

The script upon the scabbard belt

Thereupon became misspelt.

A missing n?

It was a lighthearted joke.