Q.Should Remaining Grapefruit Be Taken Off Tree When Blossoms Are Present For Next Season?
Just bought a home with a mature grapefruit tree, super juicy sweet pink grapefruit. Don’t know what to do to keep producing the best.

Certified GKH Gardening Expert
Lucky you! Pick the grapefruits if they are ripe. The longer they stay on the tree, the sweeter they get, but you don't want them overripe and lumpy.
These articles should help:
https://www.gardeningknowhow.com/edible/fruits/grapefruit/growing-grapefruit.htm
https://www.gardeningknowhow.com/edible/fruits/grapefruit/harvesting-grapefruits.htm