diff --git a/app/models/concerns/predict_planting.rb b/app/models/concerns/predict_planting.rb
index da8b0e230..ef0508e89 100644
--- a/app/models/concerns/predict_planting.rb
+++ b/app/models/concerns/predict_planting.rb
@@ -77,6 +77,17 @@ module PredictPlanting
         finish_predicted_at <= Time.zone.today
     end
 
+    # Deactivate any plantings over time_limit that are super late in small batches.
+    def self.archive!(time_limit: 3.years.ago, limit: 100)
+      active_plantings = Planting.annual.active.where("planted_at < ?", time_limit).order(planted_at: :asc).limit(limit)
+      active_plantings.each do |planting|
+        if planting.finish_is_predicatable? && planting.super_late?
+          planting.finished = true
+          planting.save
+        end
+      end
+    end
+
     private
 
     def calculate_percentage_grown
diff --git a/app/models/garden.rb b/app/models/garden.rb
index b0be0f03c..13d424b49 100644
--- a/app/models/garden.rb
+++ b/app/models/garden.rb
@@ -78,6 +78,16 @@ class Garden < ApplicationRecord
 
   def reindex(refresh: false); end
 
+  # Deactivate any gardens with no active plantings
+  def self.archive!(time_limit: 3.years.ago, limit: 100)
+    Garden.active.where("updated_at < ?", time_limit).order(updated_at: :asc).limit(limit).each do |active_garden|
+      unless active_garden.plantings.active.any?
+        garden.active = false
+        garden.save
+      end
+    end
+  end
+
   protected
 
   def strip_blanks
diff --git a/lib/tasks/gardens.rake b/lib/tasks/gardens.rake
new file mode 100644
index 000000000..605173363
--- /dev/null
+++ b/lib/tasks/gardens.rake
@@ -0,0 +1,10 @@
+# frozen_string_literal: true
+
+namespace :gardens do
+
+  desc "Mark old gardens inactive"
+  task archive: :environment do
+    Planting.archive!
+    Garden.archive!
+  end
+end