"hillier" wrote _
I have been told I could improve my runner bean crop by planting seeds in
cardboard tubes, such as toilet roll cores, to give a better root. Has
anyone tried this and does it work ?

Yes, we have used the centres of toilet and kitchen rolls. Gives an earlier
start and you just plant the whole thing so don't disturb the roots, also
avoids those pesky slugs and the pea and bean weevil.
Now use Roottrainers which are just a posh version of the same thing. :-)

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Regards
Bob
In Runnymede, 17 miles West of London