diff --git a/app/models/plant_part.rb b/app/models/plant_part.rb
index e5045baa8..15a68d977 100644
--- a/app/models/plant_part.rb
+++ b/app/models/plant_part.rb
@@ -5,6 +5,8 @@ class PlantPart < ActiveRecord::Base
   has_many :harvests
   has_many :crops, -> { uniq }, through: :harvests
 
+  validates :name, presence: true, uniqueness: true
+
   def to_s
     name
   end
diff --git a/spec/factories/harvests.rb b/spec/factories/harvests.rb
index ae3144a1e..7ed88375a 100644
--- a/spec/factories/harvests.rb
+++ b/spec/factories/harvests.rb
@@ -3,7 +3,7 @@
 FactoryBot.define do
   factory :harvest do
     crop { planting.present? ? planting.crop : FactoryBot.create(:crop) }
-    plant_part
+    plant_part { FactoryBot.create :plant_part }
     planting nil
     owner { planting.present? ? planting.owner : FactoryBot.create(:member) }
     harvested_at { Time.zone.local(2015, 9, 17) }
diff --git a/spec/factories/plant_parts.rb b/spec/factories/plant_parts.rb
index 695bf7542..42a30afd6 100644
--- a/spec/factories/plant_parts.rb
+++ b/spec/factories/plant_parts.rb
@@ -2,6 +2,6 @@
 
 FactoryBot.define do
   factory :plant_part do
-    name "pollen"
+    name { "#{Faker::Book.title}_#{rand(100..999)}" }
   end
 end