[JaK]

My welsh onions have got a flower bud coming. Do I need to take it off (like garlic...) or should I let it flower?

[realfood]

Your choice, but removing the flower bud will probably divert energy into making the plant bigger.

[Trillium]

But if you've not got many onions, seeds will help replenish your stock.

[JaK]

Ah, I see. I think I may leave it to self seed this year then. Thankyou. 

[flutemaster]

i concur,although i thought welsh onions were propogated by splitting them and transplanting?at least thats what i do, but generally the energy either goes into flowering or bulbs.i always plant some seedlings on a spare patch for seed propogation.anyway good luck.