I begin with sexuality for plants and flowers as it is the VERY MOST visually exciting.
As an exploring officer, regularly commissioned by the king of Aquilonia, I asked my peasants to grow some seeds I bring back as samples from my very perilous expeditions in these savage countries.
These are very well planted with the adequate compost, surrounded by bees, a well for water , sun etc…
BUT… seeds give me plants and flowers… no more seeds. All of Hyborian plants seem to be sterile hybrids. I have the feeling this could have been a huge issue for the devellopement of agriculture and humanity… maybe I missed something.
Once planted and well fed (with compost, water, bees … etc everything you want) why most of these plants are not allowed to produce flowers and some seeds for ever???
you could of course introduce:
a)some random accidents: this plant dont produce anymore, I am obliged to change it etc;
b) the fact that some precious and rares plants are sterile as they are today (lotus etc…)