diff --git a/torchgeo/trainers/classification.py b/torchgeo/trainers/classification.py
index d715ee3973f..861c9299a8f 100644
--- a/torchgeo/trainers/classification.py
+++ b/torchgeo/trainers/classification.py
@@ -6,6 +6,7 @@
 import os
 from typing import Any, Dict, cast
 
+import matplotlib.pyplot as plt
 import pytorch_lightning as pl
 import timm
 import torch
@@ -199,6 +200,7 @@ def validation_step(self, *args: Any, **kwargs: Any) -> None:
                 summary_writer.add_figure(
                     f"image/{batch_idx}", fig, global_step=self.global_step
                 )
+                plt.close()
             except AttributeError:
                 pass
 
diff --git a/torchgeo/trainers/detection.py b/torchgeo/trainers/detection.py
index 3d16100e696..12679778d70 100644
--- a/torchgeo/trainers/detection.py
+++ b/torchgeo/trainers/detection.py
@@ -5,6 +5,7 @@
 
 from typing import Any, Dict, List, cast
 
+import matplotlib.pyplot as plt
 import pytorch_lightning as pl
 import torch
 import torchmetrics
@@ -190,6 +191,7 @@ def validation_step(self, *args: Any, **kwargs: Any) -> None:
                 summary_writer.add_figure(
                     f"image/{batch_idx}", fig, global_step=self.global_step
                 )
+                plt.close()
             except AttributeError:
                 pass
 
diff --git a/torchgeo/trainers/regression.py b/torchgeo/trainers/regression.py
index bad9717d638..c9269e3daa2 100644
--- a/torchgeo/trainers/regression.py
+++ b/torchgeo/trainers/regression.py
@@ -5,6 +5,7 @@
 
 from typing import Any, Dict, cast
 
+import matplotlib.pyplot as plt
 import pytorch_lightning as pl
 import torch
 import torch.nn as nn
@@ -140,6 +141,7 @@ def validation_step(self, *args: Any, **kwargs: Any) -> None:
                 summary_writer.add_figure(
                     f"image/{batch_idx}", fig, global_step=self.global_step
                 )
+                plt.close()
             except AttributeError:
                 pass
 
diff --git a/torchgeo/trainers/segmentation.py b/torchgeo/trainers/segmentation.py
index 890b47aa2e9..222351e4b6d 100644
--- a/torchgeo/trainers/segmentation.py
+++ b/torchgeo/trainers/segmentation.py
@@ -6,6 +6,7 @@
 import warnings
 from typing import Any, Dict, cast
 
+import matplotlib.pyplot as plt
 import pytorch_lightning as pl
 import segmentation_models_pytorch as smp
 import torch
@@ -194,6 +195,7 @@ def validation_step(self, *args: Any, **kwargs: Any) -> None:
                 summary_writer.add_figure(
                     f"image/{batch_idx}", fig, global_step=self.global_step
                 )
+                plt.close()
             except AttributeError:
                 pass