Preparing for next week's cold snap… Community › Community › General Gardening › Sowing and Growing › Preparing for next week's cold snap… This topic has 1 reply, 2 voices, and was last updated 9 years, 3 months ago by charles. Viewing 2 posts - 1 through 2 (of 2 total) Author Posts 21st April 2017 at 12:56 pm #39152 RhysParticipant Charles The forecasters seem increasingly confident that NW London will have two or three nights of 1-3C with coolish days. With onion plants at 15-20cm tall, is fleecing them over likely to do damage to them? Everything else currently looks like it can still be fleeced over without causing problems… 21st April 2017 at 1:19 pm #39153 charlesModerator Onions withstand those temperatures fine so I would not fleece them Mine have fleece on for another week or so until large enough to withstand rabbits But if you want to fleece over they will flex and be ok with it I reckon Author Posts Viewing 2 posts - 1 through 2 (of 2 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In