Indeterminate varieties of tomatoes are also called "vining" tomatoes. They will grow and produce fruit until killed by frost/disease/pests and can reach heights of up to 20 feet although 6 feet is considered the norm. They will bloom, set new, fruit and ripen fruit all at the same time throughout the growing season.
Indeterminate vining tomatoes will require a trellis to support vine and fruit. Tomatoes will easily grow in Singapore's climate but when temperatures soar beyond 32C along with high humidity, pollination becomes tricky. We recommend growing this plant outside of the inter-monsoon period between March-May for this reason.