How Fast Do Crickets Grow | Cricket Growth Timeline Guide
If you’re feeding live crickets to your reptile, understanding how fast they grow helps you plan feeding, reduce waste, and avoid running out of the right size.
Cricket growth is relatively fast but heavily influenced by temperature, food, and overall conditions.
Quick answer: Crickets typically grow from hatchlings to adults in around 6–8 weeks under optimal conditions.
Cricket Life Cycle
Crickets go through a simple life cycle with three main stages:
- egg stage
- nymph (pinhead to juvenile)
- adult
Unlike some insects, crickets don’t undergo full metamorphosis. Instead, they gradually grow larger through multiple moults.
Each moult allows the cricket to increase in size until it reaches adulthood.
Growth Timeline
Under good conditions, you can expect the following general timeline:
- Eggs hatch: 7–14 days
- Pinheads: first 1–2 weeks
- Juveniles: weeks 2–5
- Adults: around 6–8 weeks
Growth speed varies depending on how well the crickets are cared for.
Poor conditions can significantly slow this process.
What Affects Cricket Growth Speed
Several key factors determine how fast your crickets grow:
Temperature
Warmer temperatures speed up metabolism and growth, while cooler temperatures slow everything down.
Food Quality
Crickets fed a nutritious diet grow faster and are healthier overall.
Density
Overcrowding leads to stress, competition, and slower growth.
Moisture and Hygiene
Poor conditions can cause die-offs before crickets even reach usable size. Smaller crickets are very sensitive and prefer constant access to fresh moisture.
When Crickets Are Ready to Feed
Crickets are typically ready to feed once they reach the appropriate size for your reptile.
A general rule is:
- no wider than the space between your reptile’s eyes
Because crickets grow quickly, you may need to use them within a short window before they become too large.
This is one of the main challenges of using crickets as a feeder insect. Many keepers prefer to buy them in smaller quantities because of this, rather than in bulk like other slower-growing and longer-living feeders.
Crickets vs Dubia Roaches Growth
Compared to crickets, dubia roaches grow more steadily and are less sensitive to environmental changes.
This makes them easier to manage long term, especially if you want consistent feeder sizes.
You can explore dubia sizes here:
Their more predictable growth can make feeding easier for many reptile owners.
Learn More About Cricket Care
Keeping track of growth speed is only one part of keeping crickets successfully.
For full care details, read: How to Care For Live Crickets
Complete Feeder Guide
Understanding how different feeder insects grow and behave helps you make better feeding decisions.
Read the full guide: Complete Guide to Feeder Insects in Australia
