One more test question

1) I have a vegetable patch in my back garden.
2) I grow beans, pea, and carrot.
3) I have three rows of bean plants
4) and five of carrots. How many peas do I have?
5) I don't know. I'll have to count them.

Which line in the paragraph above contains a word that has been misused?
British English

Quote:

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2) I grow beans, peas, and carrots. Or: I am growing... Usually 'grow' would be a habitually, every year usage. For this year/season, 'am growing'.

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Thanks!