Oro blanco very shy to bloom

[Daintree]

I have 9 different types of citrus trees in my greenhouse.
They all bloom and put on fruit like crazy, except my oro blanco grapefruit.
I have had it for a year, and it just sits there, acting all green and leafy.
They are all in the same location and get fed and watered the same.
Does the oro blanco need something different?

Thanks,
Carolyn

[Bush2Beach]

Not that I have noticed. I have one in 65 gallon holding fruit and flowering outside in a very mild Grapefruit zone, probably the only one I can ripen here and it's sweet!

[Daintree]

Hmmm, maybe it just needs a stern talking-to…

[Bush2Beach]

Give it the hot spot and some Classical music...

[Millet]

A foliar spray of low biuret urea ( 0.5% or less biuret), or Potassium Nitrate approximately 1 month prior to the tree's anticipated floral bloom greatly helps a citrus tree to produce a good flowering. - Millet

[Diospyros]

Could it be that it gets to much nitrogen and just leafs out instead of making flowers?

[Millet]

Methods to get a citrus to bloom:

1. Foliar spray with urea or potassium nitrate 2 months prior to anticipated bloom period.
2. Provide the tree with 350 to 600 hours of cool temperatures during the winter months (in the 40s  F)  This increases the bloom by 30 to 50 percent.Control the temperature in the winter if possible.  The low temperatures releases bud dormancy when the weather warms
3. A mild period of drought stress during December and January then provide water in the early spring.
6. Make sure tree receives plenty of direct sun light.
7.Collect rain in barrels and use this water for your citrus trees. Groundwater and water from your house may be high in saline, which can keep citrus trees from blooming.

Millet