Today I’m gonna share with you guys about how I started growing fruit flies. It’s not as complicated as you might think, and it’s actually kinda fun.
First, I got my hands on some starter cultures. I just bought them online. There are actually a lot of places selling them, and the price is pretty good. I chose the 32 oz size, which seems to be a standard. You’ll get like 50-100 adult flies in each one, enough to get things going. I mainly needed them to feed my pet, so flightless ones are perfect for me.
Then, I prepared the containers. You can use any small container, I just used some 12oz cups I had lying around, because those cups had breathable gauze vent, which is pretty good. The important thing is to have a lid that lets air in but keeps the flies from escaping.

Next, I made the food mix. This is what the flies and their larvae eat. You can find recipes online, but basically, it’s a mix of stuff like mashed potatoes, sugar, and vinegar. I followed a simple one I found, and it worked like a charm.
After that, I added the starter culture to the containers with the food mix, and made sure that they have enough food. I put the lids on, and placed the containers in a warm spot. Fruit flies like it warm, but not too hot. Room temperature is usually fine.
Then comes the waiting game. I just checked on them every day. After a few days, I started seeing tiny little maggots – those are the larvae. They munched on the food mix and grew bigger. It’s kinda gross but also fascinating. Then the larvae turned into pupae. They look like little brown cocoons. And finally, after about a week or so, new adult flies emerged!
My first batch was a success! I had a ton of fruit flies. Now I just keep some of the new flies to start new cultures, and feed the rest to my pet. It’s a pretty self-sustaining system once you get it going.
Tips from My Experience:
- Don’t overcrowd the containers. Too many flies and not enough food can lead to problems.
- Keep an eye out for mold. If the food mix gets too wet, mold can grow. If you see any, it’s best to start a new culture.
- Be patient. It takes a little time for the flies to reproduce, but once they do, you’ll have more than you know what to do with!
So there you have it! That’s how I started my own little fruit fly farm. It’s a fun and rewarding little project, and my pet is definitely happy about it!