- Who
- Margaret Lipscomb
- What
- 164.5 centimetre(s)
- Where
- United States (Big Bend National Park)
- When
The tallest bluebonnet flower (Lupinus harvardii) measured 164.5 cm (64.75 in) tall on 27 March 2005. The flower was discovered by Margaret Lipscomb and Arthur Bullis Cash (both USA) in Big Bend National Park, Texas, USA.
