How Guava tree suvived winter with frost blanket?

Protecting your tropical garden's plants and trees, such as a guava tree, against winter cold is essential even in mild climates. Tropical guava (Psidium guajava) doesn't tolerate frost, dying back to the roots This video is showing how our Guava tree has survived 2017 Melbourne winter and we did a little experiment and planted one in the ground and another one in the pot. Both the trees did very well.