Forum home Plants

Sunny window sill? Seedling advice

SophieKSophieK Wimbledon, LondonPosts: 242
I started some early seeds indoors (I do not have a glass house) and placed the tray on a south facing window sill. All was well until there was a very sunny day and the double glazing literally fried all the seedlings to a crisp. 

Is there such a thing as too sunny a window sill? I only have south of north facing windows, what would you recommend?


  • FairygirlFairygirl west central ScotlandPosts: 46,463
    Use the north one.  :)
    Even in winter, a south facing sill can be fatal for vulnerable little seedlings.
    It's still early for seed sowing, but when they're very small, even tiny increases or decreases in temp can affect them badly. Make sure to turn them regularly too, as the light levels are still low, which can be a factor too  :)
    It's a place where beautiful isn't enough of a word....

  • raisingirlraisingirl East Devon, on the Edge of Exmoor.Posts: 5,576
    South facing can be quite good for germinating seeds like chillies and tomatoes that like the compost to be warm (as long as you stop it drying out) but once they put their heads up, north is better
    “Light thinks it travels faster than anything but it is wrong. No matter how fast light travels, it finds the darkness has always got there first” 
  • chickychicky SurreyPosts: 10,161
    I successfully use west facing windowsills too.  I know that its not an option for you, but others may be interested.
    The world is a book, and those who do not travel read only one page  - St Augustine
  • SophieKSophieK Wimbledon, LondonPosts: 242
    Thank you for the advice. Will definitely do that for the seeds I am planning to sow very soon (come on March!)
  • JennyJJennyJ DoncasterPosts: 6,164
    I generally use an east-facing window (spare bedroom). If I think it's going to get too hot in the mornings, I put sheets of paper over the propagator tops, and generally move them off later in the day. Last year I used some tissue paper that was packaging for something or other. It doesn't completely block the light, a bit like shading on a greenhouse.
Sign In or Register to comment.