Forum home The potting shed

Novice grower - sunflower seedlings issue

alexemmersonukalexemmersonuk Norwich, Norfolk, UKPosts: 144
Hi all. 
My sunflower seedlings were super happy up to a few days ago. They are on a windowsill indoors at the moment. Now a few leaves are starting to turn yellow. What is this normally a sign of? Also how do I know when they are ready to be potted on? Is there a certain height they need to get to? Or height in relation to pot? Or simply a time frame? Never grown sunflowers before and my little boy is really hoping this works. I am afraid I don't know what exact species they are but I am 99% sure I saw the word dwarf sunflowers on the packet... I wasn't very good at labelling this year ugh!!! Picture below - thanks!
«1

Posts

  • alexemmersonukalexemmersonuk Norwich, Norfolk, UKPosts: 144

  • FairygirlFairygirl west central ScotlandPosts: 46,349
    edited 16 April
    They need potted on when they're outgrowing the pot they're in - ie when the roots are showing at the bottom. That's the sign for any seedlings and small plants.
    If they're getting too much sun, move them away to a cooler sill, or use some shading. A sunny windowsill can be far too much for young plants. 

    Photo's showing now - yes, those are needing moved into bigger pots, and that will give them more nutrition to carry on until they can be planted outside  :)
    It's normal for old leaves to die back, so it's not a major problem. They look fine apart from that   :)
    It's a place where beautiful isn't enough of a word....


  • alexemmersonukalexemmersonuk Norwich, Norfolk, UKPosts: 144

  • alexemmersonukalexemmersonuk Norwich, Norfolk, UKPosts: 144
    @Fairygirl
    thank you so much for that, I hadn't thought of checking the roots!!!! I'll check now. 
  • FairygirlFairygirl west central ScotlandPosts: 46,349
    They're good and healthy looking   :)
    It's a place where beautiful isn't enough of a word....


  • alexemmersonukalexemmersonuk Norwich, Norfolk, UKPosts: 144
    @Fairygirl
    I feel extremely silly now. I'll go and sort it!
  • FairygirlFairygirl west central ScotlandPosts: 46,349
    Not at all - we've all been there at some point  :)
    Just wait until you put pots on a border with the intention of planting them, and they take root through the bottom 'cos you don't quite get round to it. Not that I ever do that of course....  ;)

    They'll be fine. They're quite forgiving, and they'll enjoy their new food and a bit of extra room  :)

    It's a place where beautiful isn't enough of a word....


  • Rob LockwoodRob Lockwood Posts: 312
    Made me chuckle this @alexemmersonuk !  As Fairygirl says, we've all been there :)  They look in good nick to me so put them into bigger pots (not too much bigger) and then keep an eye on the bottom of the pot to see when thy're ready for their next upgrade.  Slugs love them so I keep them in little pots until they can fight the nasties off themselves (obvs, that's no help, but when they look like big strong plants, they're ready!).  Great plants, easy to grow and your little boy will love them (and so will the bees, squirrels and birds!)
  • Songbird-1Songbird-1 Posts: 4,019
    Also, as they start to grow up, remember to put a support in the pot for the stem. The lower leaves tend die off the bigger the plant grows.
  • alexemmersonukalexemmersonuk Norwich, Norfolk, UKPosts: 144
    They have been repotted now. They look pretty happy, thanks all! 
Sign In or Register to comment.