Im using the following mod -

http://www.nexusmods.com/morrowind/mods/6107/?

Which opens plants like containers but removes them once picked.... most ingredients work but horn lily does not dissapear when picked. Theres only one script in the mod and I cant see why horn lily does not dissapear like most other ingredients.

script is calling getdistance each frame for each plant... not good

What does that mean?

That it's not really lite.

Also I took a look at the mod and it only need Morrowind and Tribunal, so obviously Bloodmoon flora is not affected.

I'm not using/testing the mod, but I'd try changing the script like this

begin _herb

short pickmonth

if ( MenuMode )
	return
endif

if ( GetDisabled )
	if ( Month != pickmonth )
		enable
	endif
	return
endif

if ( Month == pickmonth )
	disable
endif

if ( OnActivate )
	set pickmonth to Month
	activate
endif

end

@ Abot, can you explain what you've done there and what exactly you've changed?

How would I go about making the mod work for Bloodmoon ingredients too?

Removed a call to a slow GetDistance function each frame, reorganized code so disable is done after exiting menu mode (at least in theory as script is not tested)
You must add the script as local script to the plant container(s) e.g. Flora_BM_holly_01 and all the others (easier to find if you sort by organic column)

Thanks Abot your edit works fine...

Still doesn't work with horn lily though... despite applying the script to the container in the CS. Should work anyway as its a tribunal ingredient.

it https://drive.google.com/open?id=0Bywrx4WHfGJJMmdDQ1dDOFJsUzQ for me from a fresh new game with Beth masters and the mod only loaded. You may have a mod and/or a save conflict