I bought some tamarillo fruits(Tree tomato),I will sow the seeds on spring. If you have a plant,you will have fruits this year. I read that they don't like windy sites and hot temp.
Here is a link that might be useful:Tamarillo

I grew a dozen or so about 10 years ago. Started early spring indoors, put out for summer, then brought them back to the greenhouse as it cooled off in fall.
My experience was that they were very sensitive to cold (much more than tomatoes or Brugmansias) and never amounted- and unlike my other "tropicals" they did die in the GH before it even got cold out.
They just seemed to reminiscent to Brugs, but culture wasn't as simple.