I usually find that 2.5-3kgs. does about 2 or 3 x 20 foot rows but it all
depends on the size of the seed potatoes. I normally plant about two rows
of earlies (Charlotte) and two rows of maincrop (Cara) and that feeds 2-3
people until about Easter plus prodigal childen returning for supplies when
money gets low. Although this year it looks as though the maincrop won't be
as good as normal so I won't be so generous. The best bet would be to ask
local allotmenteers for which varieties suit the local soil conditions.

Hope this helps

Steph Power

"deb" wrote in message
...
I have just taken over an allotment,and am about to order 4 kilos of potato
seedlings for next year......my plot is 10 rods i only want to have about a
quarter of this area with potatoes.How far will will 4 kilos go...

Many thanks
Deb