sprouts

Hi, I'm new to this (and allotments). I intend to plant my brussel seedlings out. Do I need to cover them with any form of mesh. I planted some the other month and the next day all the leaves had been nibbled off!!!!

Welcome to the site 
sprouts need mesh cover. but your description looks like there is a slug attack as well. you would be better off with slug pellets.  
there are organic certified slug pellets in the market.

Yup sounds like those flying rats again....

Go for it being both and you'll save the plants from these ....

...... and then the butterflies will arrive to lay eggs, so make sure they can't get through your mesh 

Flying rats, cabbage white butterflies, whitefly, club root, root fly, slugs and about 35 weeks to mature and defend against all this - I`ve given up with brassicas as I can buy superb sprouts and cabbage etc. in winter for nominal money and frankly sometimes the fight is not worth it-and I don`t give up that easily but I know when the odds are stacked against me, and it breaks my heart as I love sprouts but......oh the tears...

 
Don't give up You cannot beat the taste of your own grown vegetables.

If I gave up everything affected by that list, I'd be giving up the whole plot. Don't be such a defeatist!

 ::)It`s only the brassicas i`ve given up on because of the club root problem-i just can`t beat it-having said that I was given some red-sprout plants and felt i had to give them a go and invested in some enviromesh and made hoops out of some redundant plastic water pipe, collars out of old underlay, added some slug pellets, have my bug spray ready!- and they are thriving-so far --so not a defeatist but you have to say the armoury required can be daunting and in the end just how DO you beat club root???
 

Glad you clarified that DD   

Just for a minute it sounded painful