Rhubarb problem

[Charis]

This year my rhubarb has been very poor. The stems are few, thinner than usual on average; and this is the first time ever there have been no flower stalks needing removal. It grows at the top of the garden by the compost bin, so should get lots of food.

Any idea of the cause and maybe a solution?
The weather? (but normally it seems to like the wet, which we had plenty of here till this last couple of weeks).

Over harvesing it last year?

Maybe it needs dividing? It has been undisturbed for about 6 years or so.

doesn't like its neighbours? Nearby are growing lavendar, a honeysuckle and some canna lilies, which have been there a year or so.

Hope someone can advise.

Thanks

[Paolo@]

Not sure what is going into your composter, but you could try sprinkling some finished compost around the base of the plant. Wouldn't be a bad idea to splice off a bit and try to grow another in case it doesn't work out