Flowers that don't need much water?

Flowers that don't need much water include:

Oleander Flowers

Euphoria Flowers

Yellow Bell

Kalatsutsi

Cosmos

Bachelor buttons

Portulaca

Forget-me-nots

Phlox

Nicotiana

Dame's Rocket

Any type of Cacti

Adenium Obesum

Jatropha Podagrica