The oldest known flower is Montsechia vidalii.

A prehistoric aquatic plant that bloomed over 130 million years ago during the Cretaceous period. However, this ancient flower is extinct.

Among living flowers, the Amborella trichopoda, native to New Caledonia, is considered one of the oldest flowering plants still in existence. It’s a small, shrub-like plant with simple, white flowers.

To care for Amborella trichopoda:

1. Light: Provide bright, indirect light.

2. Watering: Keep the soil moist, but ensure good drainage to avoid waterlogging.

3. Soil: Use well-draining soil rich in organic matter.

4. Humidity: It prefers a humid environment, so occasional misting can help.

5. Temperature: Maintain a warm, tropical climate for optimal growth.

Since it’s rare, it’s primarily found in botanical gardens.