Fix weeds not spreading due to lacking a node, and fixes a runtime caused by a previous fix. It just keeps going.

code/game/objects/effects/alien/aliens.dm

@@ -176,11 +176,11 @@
 	. = ..()
 	if(isspace(loc))
 		return INITIALIZE_HINT_QDEL
-	
+
 	linked_node = node
 	if(newcolor)
 		color = newcolor
-	
+
 	if(icon_state == "weeds")
 		icon_state = pick("weeds", "weeds1", "weeds2")
 
@@ -203,7 +203,7 @@
 	desc = "Weird glowing organic growth."
 	layer = ABOVE_TURF_LAYER+0.01
 	light_range = NODERANGE
-	
+
 	var/node_range = NODERANGE
 	var/set_color = "#321D37"
 
@@ -216,6 +216,8 @@
 		else
 			qdel(existing)
 
+	linked_node = src
+
 	if(newcolor)
 		set_color = newcolor
 	if(set_color)
@@ -299,7 +301,7 @@
 
 		W.color = W.linked_node.set_color
 
-		if(prob(max(10, 40 - (5 * nearby_weeds.len))))
+		if(prob(max(10, 60 - (5 * nearby_weeds.len))))
 			W.process()
 
 /obj/effect/alien/weeds/ex_act(severity)

code/modules/mob/living/carbon/human/species/xenomorphs/alien_powers.dm

@@ -121,7 +121,7 @@
 
 	if(check_alien_ability(50,1,O_RESIN))
 		visible_message("<span class='alium'><B>[src] has planted some alien weeds!</B></span>")
-		new /obj/effect/alien/weeds/node(get_turf(src), "#321D37")
+		new /obj/effect/alien/weeds/node(get_turf(src), null, "#321D37")
 	return
 
 /mob/living/carbon/human/proc/Spit(var/atom/A)