A mix of zephyranthes. Z candida (white), Z Citrina (yellow) and Z Grandiflora (Pink).

.Plant Height: 8-10 inches or 20-25 cm
Bloom Time: Summer and early Fall

Zones 7-11, elsewhere dig and store for the winter.  Hard surface frost is OK so long as soil does not freeze to bulb level.  I usually plant 1" deep, but deeper planting or mulch can help them survive harsh winters.
Bulb are naturally small at approximately 1 cm across.  They do get bigger but this is the best value size for us to sell.  They can bloom the first year once they are established.  This variety is very quick to bloom and multiply.