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Self-sown annuals - thin out or leave them?

ElothirElothir Posts: 92
I've got quite a lot of self-sown annuals (largely Iberis and Limnanthes) popping up ranging from a few inches to just seedlings. Obviously they're a lot denser than any seed packet would ever suggest growing them. So I wondered, with hardy annuals that have self-sown, do you tend to thin them out or just let them get on with it?

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  • FairygirlFairygirl west central ScotlandPosts: 46,017
    I think it depends on the situation. If they're covering a bit of ground that would otherwise be bare, I would leave them. If you want to plant other things in the area, then pull out the ones you don't want. 
    Ultimately, they're better thinned out so that you have fewer plants, but they'll be sturdier, especially in the case of the Iberis. 
    You'll probably find many of them won't make it over winter though. Limnanthes are annuals, but I expect in some areas they may be almost perennial  :)

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


  • B3B3 Posts: 21,401
    edited October 2021
    The white iberis sempervirens is definitely a perennial here. Maybe the clue is in the name😏
    In London. Keen but lazy.
  • ElothirElothir Posts: 92
    Thanks for the replies.

    To clarify, by Iberis I meant Iberis umbellata, the annual Candytuft.

    The ground would be bare otherwise until the daffodils come up next year.
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