diff --git a/crops.lua b/crops.lua
index 07b9c34..889ee2c 100644
--- a/crops.lua
+++ b/crops.lua
@@ -49,6 +49,10 @@ Actual columns:
 							value is used as roast time
 	seed_grindable
 				any value	seed can be grinded, e.g. in a coffee grinder, needs "crop_grind.png" or value in grind
+	damage_per_second
+				any value	damage a player get while in a node with this crop, e.g. thorns of raspberries
+	liquid_viscosity
+				any value	resistance a player sees while walking through a field
 	temperature_min/_max	Range of temperature inside the crop can grow.
 	humidity_min/_max		Range of humidity
 	elevation_min/_max		Height range the crop can be found
@@ -79,7 +83,7 @@ local crop_cols={
 	"infect_rate_base","infect_rate_monoculture","spread_rate","grow_time_mean","roast_time"},
 	groups_num={"to_culture","to_dig","has_harvest","on_soil","punchable","infectable",
 	"seed_extractable","use_flail","use_trellis","snappy","infection_defence","seed_roastable",
-	"seed_grindable","for_flour","for_coffee"}}
+	"seed_grindable","for_flour","for_coffee","damage_per_second","liquid_viscosity"}}
 local crop_definition = farming.import_csv(farming.path.."/crops.txt",crop_cols)
 
 --print(dump(crop_definition))
diff --git a/crops.txt b/crops.txt
index 6140c2b..1b4b04e 100644
--- a/crops.txt
+++ b/crops.txt
@@ -1,30 +1,30 @@
-name,enabled,next_plant,rarety,steps,harvest_max,eat_hp,to_culture,to_dig,has_harvest,on_soil,punchable,infectable,infection_defence,seed_extractable,no_seed,use_flail,use_trellis,for_coffee,seed_roastable,seed_grindable,for_flour,snappy,temperature_min,temperature_max,humidity_min,humidity_max,elevation_min,elevation_max,light_min,light_max,infect_rate_base,infect_rate_monoculture,spread_rate,grow_time_mean,straw,culture_rate,seed_drop,grind,roast
-default,1,,10,8,2,1,,,,,,,,,,,,,,,,3,15,80,10,80,0,200,11,14,1E-05,0.001,0.001,12,,,,,
-barley,1,,10,7,2,,,,1,1,,1,,,,1,,1,3,,1,3,25,,30,,,,,,,,,,farming:straw,,,farming:flour,
-beetroot,1,,10,5,2,2,,1,,1,,,,,,,,,,,,3,35,,30,,,,9,,,,,,,,,,
-blackberry,1,,10,4,2,1,,,,,1,,,,,,,,,,,3,,90,20,,,,9,,,,,,,,,,
-blueberry,1,,10,4,2,1,,,,,1,,,,,,,,,,,3,45,90,40,90,,,9,,,,,,,,,,
-carrot,1,,10,8,2,2,,1,,1,,,,,,,,,2,,,3,45,,30,90,,,8,,,,,,,,,,farming:carrot_baked
-chili,1,,20,8,2,1,,,,,1,,,,,,,,,,,3,45,90,,,,1000,,,,,,,,,,,
-coffee,1,,20,5,2,1,,,,,1,,,,,,,1,4,,,3,50,120,50,150,,1000,12,,,,,,,,,,
-corn,1,,10,8,2,2,,,,1,,1,,,,,,,4,1,,3,35,90,30,,,,,,,,,,,,,,farming:corn_cob
-cotton,1,,10,8,2,,,,1,1,,1,,,,1,,,,,,3,45,90,20,,,,12,,,,,,,,,,
-culturewheat,1,,100,4,3,,1,,1,1,,1,,,,1,,1,3,,1,3,25,,40,,,,10,,,,,100,farming:straw,,,farming:flour,
-flax,,,10,7,2,,,,1,1,,1,,,,1,,,,,,3,25,,30,,,,,,,,,,farming:flaw,,,,
-garlic,,,10,5,2,1,,1,,1,,,,,,,,,3,,,3,,,,,,,,,,,,,,,,,
-grapes,1,,10,8,3,2,1,,,1,1,1,,,,,1,,,,,3,,,,,,,,,,,,,,,farming:seed_wildgrapes,,
-hemp,1,,10,8,2,,,,1,,,,,,,1,,,,,,3,,120,,,,,6,,,,1E-05,9,farming:hemp_fibre,,,,
-hop,1,,10,7,3,1,1,,,1,1,1,,,,,1,,4,,,3,,,,,,,,,,,,,,,farming:seed_wildhop,,
-mustard,1,,10,5,2,,,,,,,1,,,,,,,,2,,3,,,,,,,,,,,,,,,,,
-potato,1,,10,4,2,2,,,,1,,1,,,,,,,4,1,,3,,,,,,,,,,,,,,,,,farming:potato_baked
-raspberry,1,,10,4,2,1,,,,,1,,,,,,,,,,,3,,,,,,,9,,,,,,,,,,
-rhubarb,1,,10,3,2,2,,1,,1,,,,,,,,,,,,3,,,,,,,9,,,,,,,,,,
-spelt,1,,10,7,2,,,,1,1,,1,,,,1,,,3,,1,3,,,,,,,,,,,,,farming:straw,,,farming:flour,
-strawberry,1,,10,4,2,1,,,,,1,,,,,,,,,,,3,,,,,,,9,,,,,,,,,,
-tea,,,20,5,2,1,,,,,1,,,1,,,,,4,,,3,30,70,30,70,,,,,,,,,,,,,
-tobaco,1,,10,8,2,,,,1,1,1,,2,,,,,,4,,,3,,,,,,,,,,,,,,,,,
-tomato,,,10,8,2,1,,,1,1,1,1,,,,,1,,,,,3,,,,,,,,,,,,,,,,,
-nettle,1,,10,5,2,1,,,1,,,,1,,,1,,,2,,,3,5,150,,100,,2000,6,,,,,8,farming:nettle_fibre,,,,
-wheat,1,farming:culturewheat,10,8,2,,,,1,1,,1,,,,1,,1,3,,1,3,,,,,,,,,,,,,farming:straw,10,,farming:flour,
-wildhop,1,hop,10,6,2,,,,,,,,,,1,,,,4,,,3,,,,,,,,,,,,,,5,,,
-wildgrapes,1,,10,4,2,1,,,,,,,,,1,,,,,,,3,,,,,,,,,,,,,,5,,,
+name,enabled,next_plant,rarety,steps,harvest_max,eat_hp,to_culture,to_dig,has_harvest,on_soil,punchable,infectable,infection_defence,seed_extractable,no_seed,use_flail,use_trellis,for_coffee,seed_roastable,seed_grindable,for_flour,snappy,damage_per_second,liquid_viscosity,temperature_min,temperature_max,humidity_min,humidity_max,elevation_min,elevation_max,light_min,light_max,infect_rate_base,infect_rate_monoculture,spread_rate,grow_time_mean,straw,culture_rate,seed_drop,grind,roast
+default,1,,10,8,2,1,,,,,,,,,,,,,,,,3,,,15,80,10,80,0,200,11,14,1E-05,0.001,0.001,12,,,,,
+barley,1,,10,7,2,,,,1,1,,1,,,,1,,1,3,,1,3,,2,25,,30,,,,,,,,,,farming:straw,,,farming:flour,
+beetroot,1,,10,5,2,2,,1,,1,,,,,,,,,,,,3,,,35,,30,,,,9,,,,,,,,,,
+blackberry,1,,10,4,2,1,,,,,1,,,,,,,,,,,3,1,5,,90,20,,,,9,,,,,,,,,,
+blueberry,1,,10,4,2,1,,,,,1,,,,,,,,,,,3,,,45,90,40,90,,,9,,,,,,,,,,
+carrot,1,,10,8,2,2,,1,,1,,,,,,,,,2,,,3,,,45,,30,90,,,8,,,,,,,,,,farming:carrot_baked
+chili,1,,20,8,2,1,,,,,1,,,,,,,,,,,3,,,45,90,,,,1000,,,,,,,,,,,
+coffee,1,,20,5,2,1,,,,,1,,,,,,,1,4,,,3,,,50,120,50,150,,1000,12,,,,,,,,,,
+corn,1,,10,8,2,2,,,,1,,1,,,,,,,4,1,,3,,2,35,90,30,,,,,,,,,,,,,,farming:corn_cob
+cotton,1,,10,8,2,,,,1,1,,1,,,,1,,,,,,3,,2,45,90,20,,,,12,,,,,,,,,,
+culturewheat,1,,100,4,3,,1,,1,1,,1,,,,1,,1,3,,1,3,,2,25,,40,,,,10,,,,,100,farming:straw,,,farming:flour,
+flax,,,10,7,2,,,,1,1,,1,,,,1,,,,,,3,,,25,,30,,,,,,,,,,farming:flaw,,,,
+garlic,,,10,5,2,1,,1,,1,,,,,,,,,3,,,3,,,,,,,,,,,,,,,,,,,
+grapes,1,,10,8,3,2,1,,,1,1,1,,,,,1,,,,,3,,3,,,,,,,,,,,,,,,farming:seed_wildgrapes,,
+hemp,1,,10,8,2,,,,1,,,,,,,1,,,,,,3,,2,,120,,,,,6,,,,1E-05,9,farming:hemp_fibre,,,,
+hop,1,,10,7,3,1,1,,,1,1,1,,,,,1,,4,,,3,,,,,,,,,,,,,,,,,farming:seed_wildhop,,
+mustard,1,,10,5,2,,,,,,,1,,,,,,,,2,,3,,,,,,,,,,,,,,,,,,,
+potato,1,,10,4,2,2,,,,1,,1,,,,,,,4,1,,3,,,,,,,,,,,,,,,,,,,farming:potato_baked
+raspberry,1,,10,4,2,1,,,,,1,,,,,,,,,,,3,1,5,,,,,,,9,,,,,,,,,,
+rhubarb,1,,10,3,2,2,,1,,1,,,,,,,,,,,,3,,,,,,,,,9,,,,,,,,,,
+spelt,1,,10,7,2,,,,1,1,,1,,,,1,,,3,,1,3,,2,,,,,,,,,,,,,farming:straw,,,farming:flour,
+strawberry,1,,10,4,2,1,,,,,1,,,,,,,,,,,3,,,,,,,,,9,,,,,,,,,,
+tea,,,20,5,2,1,,,,,1,,,1,,,,,4,,,3,,,30,70,30,70,,,,,,,,,,,,,
+tobaco,1,,10,8,2,,,,1,1,1,,2,,,,,,4,,,3,,,,,,,,,,,,,,,,,,,
+tomato,,,10,8,2,1,,,1,1,1,1,,,,,1,,,,,3,,,,,,,,,,,,,,,,,,,
+nettle,1,,10,5,2,1,,,1,,,,1,,,1,,,2,,,3,1,3,5,150,,100,,2000,6,,,,,8,farming:nettle_fibre,,,,
+wheat,1,farming:culturewheat,10,8,2,,,,1,1,,1,,,,1,,1,3,,1,3,,2,,,,,,,,,,,,,farming:straw,10,,farming:flour,
+wildhop,1,hop,10,6,2,,,,,,,,,,1,,,,4,,,3,,,,,,,,,,,,,,,,5,,,
+wildgrapes,1,,10,4,2,1,,,,,,,,,1,,,,,,,3,,,,,,,,,,,,,,,,5,,,
diff --git a/register.lua b/register.lua
index e0c0b8f..a7f0936 100644
--- a/register.lua
+++ b/register.lua
@@ -308,7 +308,7 @@ farming.register_steps = function(sdef)
 			ndef[colu]=node_def[colu]
 		end
 		ndef.groups = {snappy = 3, flammable = 2,flora=1, plant = 1, not_in_creative_inventory = 1, attached_node = 1}
-		for _,colu in ipairs({"infectable","snappy","seed_extractable","punchable"}) do
+		for _,colu in ipairs({"infectable","snappy","seed_extractable","punchable","damage_per_second","liquid_viscosity"}) do
 			if sdef.groups[colu] then
 			  ndef.groups[colu] = sdef.groups[colu]
 			end
@@ -317,6 +317,7 @@ farming.register_steps = function(sdef)
 		ndef.groups[sdef.mod_name]=1
 		ndef.tiles={sdef.mod_name.."_"..sdef.plant_name.."_"..i..".png"}
 		if i < sdef.steps then
+			ndef.groups["farming_grows"]=1 -- plant is growing
 			ndef.next_step=sdef.step_name .. "_" .. (i + 1)
 			ndef.on_timer = farming.step_on_timer
 			ndef.grow_time_min=sdef.grow_time_min or 120
@@ -333,6 +334,24 @@ farming.register_steps = function(sdef)
 		if sdef.groups["use_trellis"] then
 			table.insert(ndef.drop.items,1,{items={"farming:trellis"}})
 		end
+		-- check if plant hurts while going through
+		if ndef.groups["damage_per_second"] then
+			-- calculate damage as part of growing: Full damage only for full grown plant
+			local step_damage=math.ceil(ndef.groups["damage_per_second"]*i/sdef.steps)
+			if step_damage > 0 then
+				ndef.damage_per_second = step_damage
+			end
+		end
+		-- for some crops you should walk slowly through like a wheat field
+		if ndef.groups["liquid_viscosity"] then
+			local step_viscosity=math.ceil(ndef.groups["liquid_viscosity"]*i/sdef.steps)
+			if step_viscosity > 0 then
+				ndef.liquid_viscosity= step_viscosity
+				ndef.liquidtype="source"
+				ndef.liquid_renewable=false
+				ndef.liquid_range=0
+			end
+		end
 		local base_rarity = 1
 		if sdef.steps ~= 1 then
 			base_rarity =  sdef.steps - i + 1
@@ -346,7 +365,8 @@ farming.register_steps = function(sdef)
 		  end
 		end
 		if i == sdef.steps then
-		  ndef.on_dig = farming.harvest_on_dig
+			ndef.groups["farming_fullgrown"]=1
+			ndef.on_dig = farming.harvest_on_dig
 		end
 		-- at the end stage you can harvest by change a cultured seed (if defined)
 		if (i == sdef.steps and sdef.next_plant ~= nil) then