Quisquilia: Lib. nov. is to be found here.
The so-called Hanging Gardens have plants above ground, and are cultivated in the air, with the roots of the trees above the tilled earth, forming a roof. […] Palm trees lie in place on top of the pillars, alongside each other as cross beams, leaving very little space in between. This timber does not rot, unlike others; when it is soaked and put under pressure it swells up and nourishes the growth from roots, since it incorporates into its own interstices what is planted with it from outside.
– Philo Byzantinus or Philo the Paradoxographer. Thanks for your visit!