diff --git a/code/modules/hydroponics/trays/tray_process.dm b/code/modules/hydroponics/trays/tray_process.dm
index 180617133d5..d827b63ca34 100644
--- a/code/modules/hydroponics/trays/tray_process.dm
+++ b/code/modules/hydroponics/trays/tray_process.dm
@@ -53,18 +53,18 @@
 			mutate((rand(100) < 15) ? 2 : 1)
 			mutation_level = 0
 
-	// Maintain tray nutrient and water levels.
-	if(seed.get_trait(TRAIT_NUTRIENT_CONSUMPTION) > 0 && nutrilevel > 0 && prob(25))
+	// Maintain tray nutrient and water levels, only if they don't have nutrient/water requirements.
+	if(seed.get_trait(TRAIT_REQUIRES_NUTRIENTS) && seed.get_trait(TRAIT_NUTRIENT_CONSUMPTION) > 0 && nutrilevel > 0 && prob(25))
 		nutrilevel -= max(0,seed.get_trait(TRAIT_NUTRIENT_CONSUMPTION) * HYDRO_SPEED_MULTIPLIER)
-	if(seed.get_trait(TRAIT_WATER_CONSUMPTION) > 0 && waterlevel > 0 && prob(25))
+	if(seed.get_trait(TRAIT_REQUIRES_WATER) && seed.get_trait(TRAIT_WATER_CONSUMPTION) > 0 && waterlevel > 0 && prob(25))
 		waterlevel -= max(0,seed.get_trait(TRAIT_WATER_CONSUMPTION) * HYDRO_SPEED_MULTIPLIER)
 
 	// Make sure the plant is not starving or thirsty. Adequate
 	// water and nutrients will cause a plant to become healthier.
 	var/healthmod = rand(1,3) * HYDRO_SPEED_MULTIPLIER
-	if(seed.get_trait(TRAIT_REQUIRES_NUTRIENTS) && prob(35))
+	if(prob(35))
 		health += (nutrilevel < 2 ? -healthmod : healthmod)
-	if(seed.get_trait(TRAIT_REQUIRES_WATER) && prob(35))
+	if(prob(35))
 		health += (waterlevel < 10 ? -healthmod : healthmod)
 
 	// Check that pressure, heat and light are all within bounds.