Is this standard citrus or Satsumas?

I live in the Houston area and they do fine without much of anything here. They do need well drained soil more or less. They do like organic food twice a year if possible but I have not fed my satsuma for 5 years and still get a good harvest.

Your best bet would be to check with your extension agent for more information or go to the Texas A&M garden web site as I see you say you are now in Texas?

The Texas Ruby Red Grapefruit can get to be very large trees here and will need plenty of room.