The Chandni plant, also known as Crepe Jasmine or Pinwheel Flower (scientific name: Tabernaemontana divaricata), is an evergreen shrub or small tree with fragrant, white, pinwheel-shaped flowers and glossy, dark green leaves. 

Here's a more detailed description:

Appearance:

Growth Habit:

It's an evergreen shrub or small tree, typically growing to a height of 5-10 feet. 

Leaves:

The leaves are large, glossy, and dark green. 

Flowers:

The flowers are white, waxy, and have a pinwheel shape, with petals that are twisted like pinwheels. They are fragrant, especially at night. 

Other Names:

Chandni plant is also known as Pinwheel Flower, Crape Jasmine, East India rosebay, and Tagar plant. 

Care:

• Sunlight: It thrives in full sun or partial shade.
• Soil: It prefers well-drained soil.
• Watering: Water when the topsoil feels dry.
• Fertilizing: Feed with organic fertilizer during the growing season.
• Pruning: Prune as needed to maintain shape and remove dead or damaged branches.
• Pest and Disease: Monitor for pests and diseases and take appropriate action if needed.