Himalaya is always a good idea, well recognized by its large head size, thick stems, and vase life consistency.
Alstroemeria is an extremely long lasting cut flower (12 to18 days).
New premium varieties have better flower structure, bloom size and interesting colors.
Common name for Alstroemeria is "Peruvian Lily"
Care & Handling Tips
The first consideration is handling the stems: Stem joints break easily, so handle them gently.
When received, unpack them immediately, trim about 1 inch from the stem ends with a diagonal cut and place them in a vase with water and flower food.
Change the water and preservation in your vase every four days. Also, cut the stem ends again and remove all spent flowers and yellowing leaves.
Keep your vase in a cool place away from drafts and direct sunlight.