"---Pete---" wrote in message
Hi All,
I just purchased some Marketmore Cucumber transplants from the
local nursery in those plastic modular trays with 4 cells per tray.
Some cells just have one plant but others have 2 or 3 plants in
a single cell. Should I thin those down to 1 plant per cell before
planting into the ground?

No. Plant them just as they are in the cells and then let them grow for a
little while and then when you can see which of the 2 or 3 plants is going
to be the most vigorous one, pinch out the others. If you were growing your
cucumbers from seed then you would plant 2 or 3 seeds together and pinch out
the weaker ones once you could identify the strongest grower.