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If the leaves and stems break off from the Tap Root of Smyrnium olusatrum (the root can be very large like root vegetable!) will this root sprout again? I am getting overgrown by these huge-leaved celery-like plants in my North Norfolk seaside garden!
1 Jun, 2023
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Most tap roots will regrow from below ground, which is why they make such good propagating material.
However this plant often behaves as an annual but it is biennial really. So dead heading is the answer once the flower is over so it doesn't make mature seeds..Then after it has flowered it should die.
1 Jun, 2023