This plant is not a Rex Begonia but it is commonly known as the Climbing Rex Begonia Vine. It's leaves are gorgeously coloured and resemble those of a Begonia Rex. This vine is fast growing in the warmer months.
Current Pot Size: 80mm
Light: Category x (please see our blog on plant light requirements)
Soil: Soil type x (please see our blog on soil requirements)
Fertiliser: As directed on your fertiliser of choice. Fortnightly or monthly during the growing season
Watering: Don't over water, they like to dry out between waterings.
Maintenance: Trim back to make the plant even bushier.