Every year I get these shoots coming up. They never flower. They have been doing it for the 18 years we have been in this house and every so often I try and dig down to remove the bulbs but can never find them. We are on sand so I think they have simply sunk too deep to ever flower. No idea what they are! I'll keep an eye on them this year and when they are at maximum height try and pull them up - but there are so many! This picture is just one corner of them. And I don't want to disturb the creeping campanula that they are growing through at the back.