Some ripen in 6 months, while others can take up to a year.
It depends on the fruit species. Check U.S.D.A. website, I believe that info can be found there.
Pawpaw fruit takes around four weeks to ripen. The ripe fruit only has a shelf life of 2 or 3 days, but will keep up to 3 weeks if it is refrigerated at 40° - 45° F
According to one vendor's site, honeybell oranges ripen only in January. http://www.hyattfruitco.com/land_honey.shtml
Oranges generally won't ripen once removed from the tree.
Bannas ripen when you dont eat it for a couple
It will take a few weeks for an orange to ripen on the tree. This is because it needs weeks to grow.
depends on the weather.
I'm afraid there is no straightforward answer to this. There are many varieties of oranges and they all ripen during certain times of the year. So you could have a constant supply of oranges if you had enough trees.
2 weeks
It depends on the variety of fruit, their age when placed on the table and the conditions in the room. Normally, I would expect the bananas to go bad first. A bunch of bananas would all ripen and over-ripen at the same pace. Some of the oranges may develop mold, but not usually all at the same time.
It depends on whether the orange is picked or not. An orange does not continue to ripen after being picked. You might have heard they ripen quicker in the dark because in tropical areas it takes a cool night for the vivid color to set in. However, the oranges color does not always indicate its ripeness. For instance, most Florida oranges are dyed in order to enhance their appeal to consumers.
it takes about six to nine weeks
it normally takes two to four monthes to produce the oranges on the tree .
however long it takes, god!