Bulweed or Bullweed: How To spell?
The word Bulweed is misspelled against Bullweed, a noun meaning "Knapweed."
Bullweed has double "ll" is mispronounced as "l"Remember double 'LL' in between the strings bu & weed which should not be misspelled with single 'L'
Wrong Spelling:  bu-l-weed  Correct Spelling:  bu-ll-weed 
Check more misspelled words of Bullweed to spell it correct.