She died at 104, and since the early 1960s till the age of 97, was the maker of the Pfeiffer BD Compost Starter and Field Spray 1. All the "Musketeers" were noted for their remarkable longevity. Only Harris Porter died in his 80s, while Peter Dukich reached 94, and Erika Sabarth, 105.
The exceptionally prolific Selke Biodynamic Cherry Tomato was named after her.
Emil Bock, in his book The Three Years , wrote that the seed and plant of this unusual species contains forces evoking "the cosmic sphere of sunlit clouds, air and wind..."