Are Leeks still gaining in size in May? Community › Community › General Gardening › Vegetables › Are Leeks still gaining in size in May? This topic has 1 reply, 2 voices, and was last updated 13 years, 4 months ago by charles. Viewing 2 posts - 1 through 2 (of 2 total) Author Posts 12th May 2013 at 3:42 pm #21630 DazzerelliParticipant I’ve been harvesting the bigger Musselburgh Leeks every few weeks over winter and now I’m left with just the smaller ones still in the ground. They don’t seem to be growing much. Will they get any bigger or am I in danger of them suddenly bolting? Darren 12th May 2013 at 4:08 pm #24025 charlesModerator Yes Darren, it is their season for going to seed, hence little new growth and they will be making stems soon, best harvested asap. 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