Use a clean vase
Fill the vase with cool, fresh water
Trim the stems at an angle
Remove any leaves below the waterline
Place the vase in a cool spot
Keep tulips away from direct sunlight
Keep tulips away from heat sources
Keep tulips away from ripening fruit
Change the water every 1 to 2 days
Re-trim the stems every few days
Remove wilted flowers promptly
Support tall stems with a taller vase if needed
Add flower food if available
Avoid overcrowding the vase
Keep the water level moderate
Rotate the vase occasionally
Refrigerate overnight if you want them to last longer