Tweaks.

code/modules/hydroponics/seed_controller.dm

@@ -144,3 +144,6 @@ var/global/datum/controller/plants/plant_controller // Set in New().
 
 /datum/controller/plants/proc/add_plant(var/obj/effect/plant/plant)
 	plant_queue |= plant
+
+/datum/controller/plants/proc/remove_plant(var/obj/effect/plant/plant)
+	plant_queue -= plant

code/modules/hydroponics/seed_storage.dm

@@ -34,7 +34,7 @@
 
 /obj/machinery/seed_storage/random // This is mostly for testing, but I guess admins could spawn it
 	name = "Random seed storage"
-	scanner = list("stats", "produce", "soil", "temperature", "light", "mutants")
+	scanner = list("stats", "produce", "soil", "temperature", "light")
 	starting_seeds = list(/obj/item/seeds/random = 50)
 
 /obj/machinery/seed_storage/garden
@@ -44,7 +44,7 @@
 
 /obj/machinery/seed_storage/xenobotany
 	name = "Xenobotany seed storage"
-	scanner = list("stats", "produce", "soil", "temperature", "light", "mutants")
+	scanner = list("stats", "produce", "soil", "temperature", "light")
 	starting_seeds = list(/obj/item/seeds/ambrosiavulgarisseed = 3, /obj/item/seeds/appleseed = 3, /obj/item/seeds/amanitamycelium = 2, /obj/item/seeds/bananaseed = 3, /obj/item/seeds/berryseed = 3, /obj/item/seeds/cabbageseed = 3, /obj/item/seeds/carrotseed = 3, /obj/item/seeds/chantermycelium = 3, /obj/item/seeds/cherryseed = 3, /obj/item/seeds/chiliseed = 3, /obj/item/seeds/cocoapodseed = 3, /obj/item/seeds/cornseed = 3, /obj/item/seeds/replicapod = 3, /obj/item/seeds/eggplantseed = 3, /obj/item/seeds/glowshroom = 2, /obj/item/seeds/grapeseed = 3, /obj/item/seeds/grassseed = 3, /obj/item/seeds/lemonseed = 3, /obj/item/seeds/libertymycelium = 2, /obj/item/seeds/limeseed = 3, /obj/item/seeds/mtearseed = 2, /obj/item/seeds/nettleseed = 2, /obj/item/seeds/orangeseed = 3, /obj/item/seeds/peanutseed = 3, /obj/item/seeds/plastiseed = 3, /obj/item/seeds/plumpmycelium = 3, /obj/item/seeds/poppyseed = 3, /obj/item/seeds/potatoseed = 3, /obj/item/seeds/pumpkinseed = 3, /obj/item/seeds/reishimycelium = 2, /obj/item/seeds/riceseed = 3, /obj/item/seeds/soyaseed = 3, /obj/item/seeds/sugarcaneseed = 3, /obj/item/seeds/sunflowerseed = 3, /obj/item/seeds/shandseed = 2, /obj/item/seeds/tobaccoseed = 3, /obj/item/seeds/tomatoseed = 3, /obj/item/seeds/towermycelium = 3, /obj/item/seeds/watermelonseed = 3, /obj/item/seeds/wheatseed = 3, /obj/item/seeds/whitebeetseed = 3)
 
 /obj/machinery/seed_storage/attack_hand(mob/user as mob)
@@ -72,7 +72,7 @@
 		dat += "<table style='text-align:center;border-style:solid;border-width:1px;padding:4px'><tr><td>Name</td>"
 		dat += "<td>Variety</td>"
 		if ("stats" in scanner)
-			dat += "<td>E</td><td>Y</td><td>L</td><td>M</td><td>Pr</td><td>Pt</td><td>Harvest</td>"
+			dat += "<td>E</td><td>Y</td><td>M</td><td>Pr</td><td>Pt</td><td>Harvest</td>"
 		if ("temperature" in scanner)
 			dat += "<td>Temp</td>"
 		if ("light" in scanner)
@@ -81,7 +81,7 @@
 			dat += "<td>Nutri</td><td>Water</td>"
 		dat += "<td>Notes</td><td>Amount</td><td></td></tr>"
 		for (var/datum/seed_pile/S in piles)
-			var/datum/seed/seed = plant_controller.seeds[S.seed_type]
+			var/datum/seed/seed = S.seed_type
 			if(!seed)
 				continue
 			dat += "<tr>"
@@ -118,13 +118,6 @@
 					dat += "<td>No</td>"
 
 			dat += "<td>"
-			if ("mutants" in scanner)
-				if(seed.mutants && seed.mutants.len)
-					dat += "SUBSP "
-				if(seed.get_trait(TRAIT_IMMUTABLE) == -1)
-					dat += "MUT "
-				else if(seed.get_trait(TRAIT_IMMUTABLE) > 0)
-					dat += "NOMUT "
 			switch(seed.get_trait(TRAIT_CARNIVOROUS))
 				if(1)
 					dat += "CARN "

code/modules/hydroponics/spreading/spreading.dm

@@ -60,6 +60,10 @@
 	var/last_tick = 0
 	var/obj/machinery/portable_atmospherics/hydroponics/soil/invisible/plant
 
+/obj/effect/plant/Del()
+	if(plant_controller)
+		plant_controller.remove_plant(src)
+	..()
 /obj/effect/plant/single
 	spread_chance = 0
 
@@ -218,9 +222,8 @@
 
 	if(istype(W, /obj/item/weapon/wirecutters) || istype(W, /obj/item/weapon/scalpel))
 		if(!seed)
-			user << "There is nothing to take a sample from in \the [src]."
+			user << "There is nothing to take a sample from."
 			return
-		// Create a sample.
 		seed.harvest(user,0,1)
 		health -= (rand(3,5)*10)
 	else
@@ -250,4 +253,4 @@
 		die_off()
 
 /obj/effect/plant/proc/is_mature()
-	return (health < (max_health/3))
+	return (health >= (max_health/3))

code/modules/hydroponics/spreading/spreading_growth.dm

@@ -56,8 +56,7 @@
 		last_tick = world.time
 		update_neighbors()
 
-	if(neighbors.len && prob(spread_chance))
-
+	if(is_mature() && neighbors.len && prob(spread_chance))
 		for(var/i=1,i<=seed.get_trait(TRAIT_YIELD),i++)
 			if(prob(spread_chance))
 				sleep(rand(3,5))