Plants show Fibonacci numbers going upto 233 in sunflowers. It’s a very striking phenomenon — Alan Turing wrote computer programs seeking to understand this.

Flower petals, the majority of flowers in nature have a number of petals from the Fibonacci sequence. It can have 1, 3, 5, 8, 13, or even 21 petals; some have 4, 6, or 7 petals.

In the Fibonacci sequence, each number is the sum of the two previous ones: 1, 1, 2, 3, 5, 8, 13 and so on.