Tamarillo Germination:
1) Spread the seeds on two layers of moistened paper towels covered with plastic to keep high humidity. 
2) Use a heated propagator to keep the temperature at no less than 70 degrees F.
3) Sprouts should emerge within 7-14 days.
4) Wait until tiny fuzzy root hair appear on the tap roots. When the tap roots are around an inch long, and have a 90 degree bend, this is the time to transplant into seed starting mix, keeping the temperatures above 70 F.
5) Keep moist, and well drained in the seed starting mix.