The Life of the Ladybug — From Larva to Beetle

 And Everything In Between

🐜 Garden Critters | by Guy Saldiveri | August 7, 2026

Just about everyone is familiar with the one on the left. Ladybugs are one of the most beloved insects to have in the garden.

Many folks actually order them just to release them into the yard with hopes they'll hang out and provide some beneficial pest control.

At the same time, though, many of those same folks will sadly kill off the ones shown on the right. I say sadly because the image shows that beloved ladybug in its larval stage, and they're being killed simply because they aren't being properly identified.

It's hard to believe, right? That ugly, spiky, alligator-looking critter is what actually turns into the neat little beetle we all love.

I know it threw me the first time I realized it — and if I'm being completely honest here — I have to say I've probably killed off a few myself without realizing what they were. I can say this, though, I won't be making that same mistake again.

Everyone knows the beetle devours aphids, but the larva does just as much — if not more — damage to those pests. Each ladybug larva can eat up to 400 aphids before retiring into a pupa and emerging as a full-grown beetle.

Ladybugs fly in and set up shop when they find food. They love to munch on those little aphids and after a little while, they will lay their eggs close by.

Those eggs will typically take between 4-7 days to hatch, and when they do, those little spiky, alligator-looking critters really get down to business. The more aphids they find, the more they eat!

After 2-3 weeks or so, they've generally had their fill, and it's time to pupate. They'll wiggle off, find themselves a good spot, and morph into a pupa. We don't get to see the real magic, but after another week or so, the adult beetle emerges and the cycle starts all over again.

With these guys hanging out, those aphids really don't stand a chance. It's one of the real reasons I refuse to spray my plants with anything that kills off the aphids. Not so much because I don't want to get rid of the aphids, but because I don't want to kill off the beetle larvae.  Just about everything sprayed to kill aphids, kills off the ladybug population as well. I'd rather have the aphids and just knock them around with a hard blast of water and keep the ladybugs and their larvae around as much as possible.

I know that's not always as feasible in reality as it may sound on paper, but the idea is sound. In any case, it's good to be familiar with the larval stage so you don't target them specifically on the plants. They really are scary-looking, but fantastic to have hanging around.

Here's a link to another article I've written about some scary looking critters that are really beneficial to have in the garden. Hey, you can never know too much, right?

Hope you enjoy these little rambles as much as I enjoy writing them. See you around the shed — the coffee is already brewing 😉

Happy Gardening 🌱