Sources

Pages were cached and checked on 14 November 2026. We quote the article body of Encyclopaedia Britannica pages, not any "Ask Anything" boxes on those pages. Wikipedia is not used as a source.

• RHS, How to grow citrus
• Encyclopaedia Britannica, Citrus
• Encyclopaedia Britannica, Lemon
• Encyclopaedia Britannica, Lime
• Encyclopaedia Britannica, Kumquat

The RHS grow-your-own page has a typographical slip, "Iate March," in the summer-feed sentence. We use the months as written (March to October, then November to mid-March).

See the fact-check log for the wording of each claim.