Do you mean the flower stalk, or do you mean it's pushed itself out of the ground? If the latter, just repot and bury it a bit. They do it all the time. Watch out for vine weevils too - they're very susceptible in pots
It's a place where beautiful isn't enough of a word....
thanks for your reply Fairygirl, It almost has a trunk like a tree, I thought it was because it was pot bound, but this has happened to garden planted ones also .I will check for Vine weevils as I wasn't aware this could be a problem with Heucera
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If the latter, just repot and bury it a bit. They do it all the time.
Watch out for vine weevils too - they're very susceptible in pots