A big Black Ficus plant, typically referring to Ficus elastica 'Black Jade' or Ficus microcarpa 'Black', is a large, leafy evergreen tree with striking dark green to almost black leaves, and is also known as the Rubber Plant. It thrives in bright, indirect light and is relatively low-maintenance. 

Key Features:

Appearance:

The most striking feature is its large, glossy, dark green to almost black leaves. 

Growth:

It can grow quite large, even indoors, potentially reaching several feet in height. 

Care:

Relatively easy to care for, preferring bright, indirect light and regular watering. 

Uses:

Popular as a houseplant for its elegance, air-purifying properties, and ability to add a touch of drama to any space. 

Cultivars:

Ficus elastica 'Black Jade':

A variety known for its very dark, almost black leaves, and is often referred to as the "Black Ficus". 

Ficus microcarpa 'Black':

Another cultivar with dark green to almost black leaves, also popular for its compact size and suitability for indoor or outdoor use.