soilless

adjective2

1. •
   Not using or containing soil

   • One popular recipe for a homemade version is two parts soilless mix like Pro-Mix and one part each vermiculite and perlite. — 2007
2. •
   Lacking home soil; dispossessed

   • If they live in squalor, in filth, in crime, with hope and joy gone, a homeless, soilless army of human prey. — 1910