Desert Roses Valentine

This one keeps its leaves in the cold
But has few red flowers in the summer
This one sheds its leaves
 
Shivering at the first breeze
But is loaded with pale pink flowers
Spring through summer
 
Different sensitivities and positions
To the sun though they share
The same extinct mother
 
Disappeared into her two
Bulbous daughters
Her divided mind
 
Multiplying her kind
She loves me
She loves me not