Various updates and tweaks. Added support for a few mods, added a dead plant that flowers turn into. Leaves fall from the trees and accumilate on the ground, though that code still needs work, as do the textures.

depends.txt

@@ -2,3 +2,4 @@ default
 lightning?
 flowers?
 bakedclay?
+moreplants?

flowers.lua

@@ -1,15 +1,51 @@
+minetest.register_node("mymonths:deadplant", {
+	description = "Dead Plant",
+	drawtype = "plantlike",
+	tiles = {"mymonths_deadplant.png"},
+	paramtype = "light",
+	is_ground_content = false,
+	buildable_to = true,
+	sunlight_propagates = true,
+	inventory_image = "mymonths_deadplant.png",
+	visual_scale = 1.2,
+	wield_scale = {x=0.5, y=0.5, z=0.5},
+	groups = {snappy=3, flammable=1, attatched_node=1,},
+	selection_box = {
+		type = "fixed",
+		fixed = {-0.2, -0.5, -0.2, 0.2, -0.1, 0.2}
+	},
+	walkable = false,
+   on_punch = function(pos)
+      leaves_fall(pos)
+   end
+})
 
 -- Flowers die in late fall
 minetest.register_abm({
 	nodenames = {'group:flower'},
-	interval = 10,
-	chance = 10,
+	interval = 60,
+	chance = 100,
 
 	action = function (pos)
 
 		if mymonths.month_counter == 10
 		or mymonths.month_counter == 11 then
 
+			minetest.set_node(pos, {name = 'mymonths:deadplant'})
+		end
+	end
+})
+
+minetest.register_abm({
+	nodenames = {'mymonths:deadplant'},
+	interval = 60,
+	chance = 100,
+
+	action = function (pos)
+
+		if mymonths.month_counter == 12
+		or mymonths.month_counter == 1 then
+
 			minetest.set_node(pos, {name = 'air'})
 		end
 	end
@@ -19,11 +55,11 @@ minetest.register_abm({
 -- initial population as that ABM won't grow flowers where there are none.
 minetest.register_abm({
 	nodenames = {'group:soil'},
-	interval = 240,
-	chance = 100,
+	interval = 10,
+	chance = 300,
 
 	action = function (pos, node)
-      if node.name == 'default:desert_sand' then
+      if node.name == 'default:desert_sand' or node.name == 'default:dirth_with_snow' then
          return
       end
 

grass.lua

@@ -8,6 +8,11 @@ minetest.register_node("mymonths:fall_grass", {
 	sounds = default.node_sound_dirt_defaults({
 		footstep = {name = "default_grass_footstep", gain = 0.25},
 	}),
+   soil = {
+		base = "default:dirt_with_dry_grass",
+		dry = "farming:soil",
+		wet = "farming:soil_wet"
+	}
 })
 
 minetest.register_abm({

init.lua

@@ -81,4 +81,6 @@ end
 if mymonths.flowers_die == true then
    dofile(modpath  .. '/pre-flowers.lua')
    dofile(modpath .. "/flowers.lua")
+else
+   minetest.register_alias('mymonths:deadplant', 'air')
 end

models/mymonths_fall_leaves.mtl

@@ -0,0 +1,10 @@
+# Blender MTL File: 'None'
+# Material Count: 1
+
+newmtl None
+Ns 0
+Ka 0.000000 0.000000 0.000000
+Kd 0.8 0.8 0.8
+Ks 0.8 0.8 0.8
+d 1
+illum 2

models/mymonths_fall_leaves.obj

@@ -0,0 +1,15 @@
+# Blender v2.78 (sub 1) OBJ File: ''
+# www.blender.org
+mtllib mymonths_fall_leaves.mtl
+o Plane
+v -0.500000 -0.450000 0.500000
+v 0.500000 -0.450000 0.500000
+v -0.500000 -0.450000 -0.500000
+v 0.500000 -0.450000 -0.500000
+vt 0.000100 0.000100
+vt 0.999900 0.000100
+vt 0.999900 0.999900
+vt 0.000100 0.999900
+usemtl None
+s off
+f 1/1 2/2 4/3 3/4

pre-flowers.lua

@@ -1,3 +1,6 @@
+-- Support for any mods that add flowers is added here. We check if a mod is enabled
+-- then add it's flowers/plants to the mymonths.flosers table.
+
 mymonths.flowers = {}
 
 if minetest.get_modpath('flowers') then
@@ -16,4 +19,27 @@ if minetest.get_modpath('bakedclay') then
    table.insert(mymonths.flowers,'bakedclay:thistle')
 end
 
+if minetest.get_modpath('moreplants') then
+   table.insert(mymonths.flowers, 'moreplants:tallgrass')
+   table.insert(mymonths.flowers, 'moreplants:aliengrass')
+   table.insert(mymonths.flowers, 'moreplants:bulrush')
+   table.insert(mymonths.flowers, 'moreplants:bigfern')
+   table.insert(mymonths.flowers, 'moreplants:umbrella')
+   table.insert(mymonths.flowers, 'moreplants:bigflower')
+   table.insert(mymonths.flowers, 'moreplants:medflower')
+   table.insert(mymonths.flowers, 'moreplants:spikefern')
+   table.insert(mymonths.flowers, 'moreplants:weed')
+   table.insert(mymonths.flowers, 'moreplants:bluespike')
+   table.insert(mymonths.flowers, 'moreplants:blueflower')
+   table.insert(mymonths.flowers, 'moreplants:eyeweed')
+   table.insert(mymonths.flowers, 'moreplants:moonflower')
+   table.insert(mymonths.flowers, 'moreplants:caveflower')
+   table.insert(mymonths.flowers, 'moreplants:fireflower')
+   table.insert(mymonths.flowers, 'moreplants:deadweed')
+   table.insert(mymonths.flowers, 'moreplants:taigabush')
+   table.insert(mymonths.flowers, 'moreplants:jungleflower')
+   table.insert(mymonths.flowers, 'moreplants:curly')
+   table.insert(mymonths.flowers, 'moreplants:clover')
+end
+
 mymonths.flower_number = table.getn(mymonths.flowers)