Climate and Location:

Subtropical Nature:

Tamarillos are subtropical plants, thriving in warm climates with temperatures above 50°F (10°C). 

Cold Tolerance:

They can tolerate temperatures as low as 28°F (-2°C) but will experience dieback. 

Frost Sensitivity:

They are very sensitive to frost and can't tolerate freezing temperatures. 

Overwintering:

You'll need to bring the plant indoors during the winter or keep it in a container that can be moved indoors. 

Container Growing:

Container growing is recommended for colder climates, allowing for easy relocation to a protected area during winter. 

Planting and Care:

Soil:

Tamarillos prefer rich, well-drained soil, and compost-enriched soil is ideal. 

Sunlight:

They need full sun, but in hotter climates, partial shade can be beneficial. 

Watering:

Ensure the soil is moist but not waterlogged, as they are not tolerant of drought or waterlogging. 

Fertilizing:

Fertilize sparingly, especially if the soil is rich in organic matter, and apply liquid fertilizer during flowering or fruiting. 

Pruning:

Prune only when necessary. 

Pests and Diseases:

Tamarillos are not particularly susceptible to pests and diseases, but powdery mildew can affect the leaves. 

Propagation:

They can be propagated from seeds or cuttings. 

Lifespan:

The average lifespan of a tamarillo tree is about four years, but with proper care, they can live longer.