12a is a zone in the USDA Climate Zone system and can be used to help assess if certain plants will grow well in your area. There are presently 4 gardens on Folia marked as being in USDA Zone 12a.

Typical example plants that tend to grow vigorously in this zone include Red-leaf hibiscus, Taro, African Violet, Alpine strawberry, Banana plant, Okra, Papaya, Blueberry, East Indian Lemongrass and Strawberry.

Areas recently identified in Folia as being in this zone include Makati ( NCR) / and Sierra Madre ,Rizal Region (Philippines).

If your area is defined as within 12a, you typically get low temperatures of between 10°C (50°F) and 12°C (54°F)

Zone 12a has a corresponding Sunset zone of 25, H1, H2.

Due to large differences in average temperature, USDA Zone 12a is typically known as Zone 6 in Australia.