Miracle fruit must be a common name for them...Just what are they?

if you have someone i would love to get one and try to grow them too please

I have seedlings there maybe 1.5 ft tall

As I am in Queensland, frost is seldom a problem, but I think they would not like it. My bush is going fine in a pot though, so I think that warped could do the same, and bring it in over winter. I have mine growing in a spot that receives morning sun, but a bit filtered, at the edge of the greenhouse, but its on paving with a brick wall behind so gets retained heat in the afternoon and humidity. It doesn't seem to like to be too exposed as the new leaves wilt badly in heat or if water is not kept up. It's some years old but still small, say 2 feet, but has been fruiting for 3 years. I try to keep up the water to it and the top of the pot is mulched, which seems to help with the acidity it needs, as well. It seems to be slow-growing though I dare say a bit of TLC would push it along. I have a seedling -grown - still only tiny, if warped wants to give it ago I'll send it down for postage costs.