Just how big do black diamond watermelons get?

If you're planning your summer garden, you're probably wondering how big do black diamond watermelons get before they're finally ready to harvest. It's a fair question, especially since these things have a reputation for being absolute behemoths in the patch. Most people are used to those "personal-sized" watermelons you see at the local grocery store that fit comfortably in one hand, but the Black Diamond is a completely different beast altogether. ...

May 13, 2026 · 7 min · Ortquist Naegele