I bought jujube fruit. Have you ever had it. Why don't they grow Vitamin C rich fruits.?

Question

These are delicious too. Mostly found in India, Pakistan and China. These are extremely high in Vitamin C. Vitamin C is supposed to cure heart disease ( Noble prize winning Chemist Linus Pauling Said.). Why do they not6 grow here fruits high in Vitamin C. I mean in USA. I believe Vitamin C can actually reduce health costs.

The following table is approximate and shows the relative abundance in different raw plant sources. The amount is given in miligrams per 100 grams of fruit or vegetable (in comparison, one teaspoon of pure vitamin C weighs 4,500 miligrams)...

Plant source Amount
Billy Goat plum 3150
Camu Camu 2800
Wolfberry 2500
Rose hip 2000
Acerola 1600
Amla 720
Seabuckthorn 600
Jujube 500
Baobab 400
Blackcurrant 200
Red pepper 190
Parsley 130
Guava 100
Kiwifruit 90
Broccoli 90
Loganberry 80
Redcurrant 80
Brussels sprouts 80
Lychee 70
Cloudberry 60
Persimmon 60
Plant source Amount
Papaya 60
Strawberry 60
Orange 50
Lemon 40
Melon, cantaloupe 40
Cauliflower 40
Grapefruit 30
Raspberry 30
Tangerine 30
Mandarin orange 30
Passion fruit 30
Spinach 30
Cabbage raw green 30
Lime 20
Mango 20
Potato 20
Melon, honeydew 20
Tomato 10
Blueberry 10
Pineapple 10
Pawpaw 10
Grape 10
Plant source Amount
Apricot 10
Plum 10
W

you know Yahzmin, if you market u can create a sales. Something as useful as Jujube will have a market. Jujube has 10 times more Vitamin C than oranges. Nothing is better than natural Vitamin C.

Answer 1

As to jujube:

"Climate for jujubes should be hot and dry. They are grown primarily in Texas and the southwestern United States. Jujubes have survived drought and excess moisture better than any other fruit plant in trials at College Station, Texas. Though plants will survive in all areas of the state, they are better adapted to the more arid areas rather than the Gulf Coast. Winter injury does not seem to be a problem with jujubes in Texas and they usually bloom late enough to escape spring frosts."

"Soils: Jujubes tolerate many types of soils, but prefer a sandy, well-drained soils and do less well in heavy, poorly drained soil. They are able to grow in soils with high salinity or high alkalinity.

Irrigation: One of the outstanding qualities of the jujube tree are its tolerance of drought conditions. Regular watering, though, is important to assure a quality fruit crop. "

So, I would say the climatic restrictions would be a big factor, as well as soil and water. And, of course, there needs to be a market for the fruit for it to be a viable crop!