I recently visited a nearby “nature center.” It’s no substitute for the botanical garden in Wichita, but it’s not a waste of time, either. Its focus is on plants native to Kansas, and there are a number of trails there that I will explore on future visits.
I did find some color there, and a plum.
There was also a fine stand of everyone’s favorite, giant ragweed. (Legend has it that some hippies once journeyed out into the countryside to harvest the cannabis that allegedly grew wild in parts of Kansas and filled several large plastic bags full. Cops caught them, but they had to let the hippies go; what the hippies thought was marijuana was actually ragweed.)
Near the parking lot there was a limestone post rock, probably imported from a county north-west of here.
There are more pictures here.
Some botanical links:
Potting mixtures for cacti and other succulents. (What I primarily use myself is a variant of “mabel mix,” substituting crushed-granite chicken grit for the “sharp sand” that’s universally recommended and impossible to find.)