Posted: 05/07/2013 at 20:39
Hello, don't know what the problem could be. How strange
Where are they situated? I have a few lupins dotted around the place and apart from the immature plants, grown from seed last year, they have all flowered. I would certainly expect flowers after 3 years. I'm assuming the plants/leaves are mature and fairly large.
The only thing I can think of that would attack the roots are vine weavels but they tend to kill or weaken the plant and I didn't think Lupins are prone to this.