Long-time friends and followers know of my infatuation with plants and mathematics, especially the Fibonacci sequence of numbers.
One of the numbers is 13.
0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89….
The Fibonacci sequence is expressed throughout nature in many ways: golden angle, divergent angle, golden spiral, golden triangle, Fibonacci triangle, and more….
So when I saw this Echinopsis atacamensis ssp. pasacana with 13 ribs….
….offered for sale by Gnosis Nursery of Ramona CA, well, I thought it would look good in my gardens with all my other Fibonacci plants.
I planted it yesterday.
I like it, and I think it likes me.
This plant is native to Argentina and Bolivia, and grows at elevations of 6,500 feet to 13,100 feet above sea level on steep slopes. It does not like high humidity, extreme heat, or lasting frost. The mean maximum temperature in its native habitat is about 85°F, and it only gets about 6 inches of rain each year.
I’m at 682 feet high, and we do get extreme heat out here, many consecutive days of 100+°F with a maximum (so far, in 2½ years) of 118°F. Since January 1, 2019, I have had 46.75 inches of rain.
Consequently, I planted it on the side of the house that gets bright light and shade rather than in full sun.
I guess I’ll find out whether it really likes me.