diff --git a/extras/Hadrons/Environment.cc b/extras/Hadrons/Environment.cc
index 9c9618f7..35bb4648 100644
--- a/extras/Hadrons/Environment.cc
+++ b/extras/Hadrons/Environment.cc
@@ -106,14 +106,10 @@ void Environment::createCoarseGrid(const std::vector<int> &blockSize,
     gridCoarse4d_[key4d].reset(
         SpaceTimeGrid::makeFourDimGrid(coarseDim, 
             GridDefaultSimd(nd, vComplex::Nsimd()), GridDefaultMpi()));
-    gridCoarseRb4d_[key4d].reset(
-        SpaceTimeGrid::makeFourDimRedBlackGrid(gridCoarse4d_[key4d].get()));
     if (Ls > 1)
     {
         gridCoarse5d_[key5d].reset(
             SpaceTimeGrid::makeFiveDimGrid(cLs, gridCoarse4d_[key4d].get()));
-        gridCoarseRb5d_[key5d].reset(
-            SpaceTimeGrid::makeFiveDimRedBlackGrid(cLs, gridCoarse4d_[key4d].get()));
     }
 }
 
@@ -179,30 +175,6 @@ GridCartesian * Environment::getCoarseGrid(
     }
 }
 
-GridRedBlackCartesian * Environment::getRbCoarseGrid(
-    const std::vector<int> &blockSize, const unsigned int Ls) const
-{
-    auto key = blockSize;
-
-    try
-    {
-        if (Ls == 1)
-        {
-            key.resize(getNd());
-            return gridCoarseRb4d_.at(key).get();
-        }
-        else
-        {
-            key.push_back(Ls);
-            return gridCoarseRb5d_.at(key).get();
-        }
-    }
-    catch(std::out_of_range &)
-    {
-        HADRON_ERROR(Definition, "no coarse red-black grid with Ls= " + std::to_string(Ls));
-    }
-}
-
 unsigned int Environment::getNd(void) const
 {
     return nd_;
diff --git a/extras/Hadrons/Environment.hpp b/extras/Hadrons/Environment.hpp
index 0fb81250..f624f36e 100644
--- a/extras/Hadrons/Environment.hpp
+++ b/extras/Hadrons/Environment.hpp
@@ -92,8 +92,6 @@ public:
     GridRedBlackCartesian * getRbGrid(const unsigned int Ls = 1) const;
     GridCartesian *         getCoarseGrid(const std::vector<int> &blockSize,
                                           const unsigned int Ls = 1) const;
-    GridRedBlackCartesian * getRbCoarseGrid(const std::vector<int> &blockSize,
-                                            const unsigned int Ls = 1) const;
     std::vector<int>        getDim(void) const;
     int                     getDim(const unsigned int mu) const;
     unsigned long int       getLocalVolume(void) const;
@@ -166,9 +164,7 @@ private:
     GridRbPt                               gridRb4d_;
     std::map<unsigned int, GridRbPt>       gridRb5d_;
     std::map<std::vector<int>, GridPt>     gridCoarse4d_;
-    std::map<std::vector<int>, GridRbPt>   gridCoarseRb4d_;
     std::map<std::vector<int>, GridPt>     gridCoarse5d_;
-    std::map<std::vector<int>, GridRbPt>   gridCoarseRb5d_;
     unsigned int                           nd_;
     // random number generator
     RngPt                                  rng4d_;