You can make your own hummingbird nectar, with table sugar and boiling water.
Just Sugar and Water: Boil 1 cup of water for 1 – 2 minutes. Remove from heat and add 1/4 cup white table sugar. Do not use food color or honey. Stir to dissolve thoroughly. Cool completely before filling your hummingbird feeder.
Refresh Every 4 – 5 Days: Fill your feeder with only as much nectar as will be consumed in 4 or 5 days. Store the remaining nectar in refrigerator for up to 2 weeks. Spoiled or moldy nectar can be deadly.
Keep it Clean! Every time you refill your feeder (no longer than 5 days), rinse the feeder with hot tap water and brush away any mold or mildew.