I have a grapefruit in the ground and planted about 4 years ago. good size and condition but has never had a flower. what should I feed it with? Jill Sunshine Coast
Certified GKH Gardening Expert
Most citrus, especially those started from seed can take anywhere for 3 to up to 6 years before you see the first flower. If this grapefruit is from seed, then it is not going to be a grapefruit. The way the pollination works to get these makes the seed revert back to the parent tree.
If your grapefruit was purchased as a mature grafted plant, then it could be something as simple as a lack of fertilizer.
You should fertilize these once a year with a citrus fertilizer.
This article will give you more information:https://www.gardeningknowhow.com/edible/fruits/grapefruit/growing-grapefruit.htm