Most all citrus are self-pollinating. The usual do not need more than 1.
Gary

"Aria" wrote in message
news:ZUamc.27958$6L3.24250@fed1read05...
Do you have to plant more than one tree to ensure pollination? Or does
that
have nothing to do with it? I really want a lemon tree but don't know if I
need to buy two....