  Supersymmetric models with low electroweak fine-tuning are more prevalent on
the string landscape than fine-tuned models. We assume a fertile patch of
landscape vacua containing the minimal supersymmetric standard model (MSSM) as
a low-energy EFT. Such models are characterized by light higgsinos in the mass
range of a few hundred GeV whilst top squarks are in the 1-2.5 TeV range. Other
sparticles are generally beyond current LHC reach. We evaluate prospects for
top squark searches of the expected natural SUSY at HL-LHC.
