What do I actually need to start breeding discoid roaches?

An opaque plastic bin, a side-mounted heat mat on a thermostat, vertical cardboard egg flats, fine metal mesh over the vents, a water-crystal dish, and a starter colony of mixed sizes. That's the whole kit — most of it costs less than a month of buying feeders.

What temperature do discoid roaches need to breed?

They survive at room temperature but only breed well at 85–90°F in the warm zone (tolerating up to the mid-90s). Below about 80°F reproduction slows to a near-stop. A side-mounted heat mat on a thermostat is the single biggest lever on colony output.

How long until a colony produces enough to feed off?

Plan on 4–6 months before you can harvest without shrinking the colony. Discoids mature in about 4–6 months and breed slower than dubia, so start bigger than you think you need and leave it alone while it builds.

Why did my discoid colony stop producing?

Almost always too cold, too dry, or short on protein — in that order. Discoids are live-bearers, so cold or dry conditions stall the adults rather than killing eggs. Check the warm-zone temperature first, then humidity, then diet.

Do I still need to dust roaches with calcium if I breed my own?

Yes. Breeding doesn't change their nutrition — discoids, like nearly all feeders, are phosphorus-heavy and need calcium dusting before feeding regardless of how well you gut-load. Breeding saves money, not the supplement step.

← All exotic animals

Feeder Insects

Discoid Roach Breeding Made Easy: The Setup and Kit That Actually Works

By Matt Goren · Updated June 25, 2026

Care at a glance

Role: Staple feeder
Protein: ~20%
Fat: ~6.5%
Moisture: ~60%
Chitin: low
Ca:P: 1:3
Calcium-rich: No (dust it)
Best for: Most insectivores — beardies, geckos, frogs, monitors

The reason most people start breeding discoid roaches (Blaberus discoidalis) is simple frustration: you run out of feeders, the pet store is out of stock, and prices keep creeping up. A home colony fixes all three — a steady, sized-to-order supply of clean feeders that costs almost nothing to run once it's going. The good news is the kit is cheap and the process is genuinely easy. The one thing it demands is patience for the first few months. Here's the setup that works and the equipment worth buying.

Why discoids are beginner-friendly to breed

A few traits make discoids forgiving for a first colony:

They can't climb smooth walls. A plain plastic bin holds adults with no sealed lid and no greased rim — far less fiddly than feeders that climb or fly.
They're live-bearers. Females carry an egg case internally and give birth to live nymphs, so there are no fragile egg cases to incubate or lose to drying out.
They're hardy and quiet. They tolerate a range of conditions, barely smell, and make no noise.
They're legal where dubia aren't — notably Florida — which is why so many southern keepers breed them specifically.

The one real trade-off: discoids breed slower than dubia and genuinely demand heat. Solve the heat, accept a slower ramp, and the colony runs itself.

The kit: what to buy

This is the whole list. None of it is exotic, and most of it costs less than a month or two of buying feeders.

1. An opaque plastic bin

A 10-to-20-gallon opaque storage bin is the ideal home for a starter colony. Opaque matters — discoids want dark, and a dark bin keeps them calm and breeding. Plastic is cheap, light, easy to drill, and stands up to side-mounted heat. Make sure it's clean and never held cleaning products or pesticides.

2. A heat mat on a thermostat

This is the most important piece of equipment, and where people who fail usually went wrong. Discoids breed only in the mid-80s to low 90s and stall below 80°F. Two rules:

Mount the mat on a side wall, not the bottom. Discoids cluster low in the bin; bottom heat cooks them from underneath. Side heat radiates warmth without baking the floor.
Always run it through a thermostat. An unregulated mat overshoots and cooks a colony, or underperforms in a cold room. A thermostat with the probe in the warm zone, set around 88°F, is the best $15–30 in the whole setup.

Leave the far end of the bin cooler so the roaches can self-regulate.

3. Vertical cardboard egg flats

Stand cardboard egg flats upright inside the bin. They triple or quadruple the usable living space, give nymphs and molting adults dark hiding spots (which cuts stress and cannibalism), and make harvesting trivial — lift a flat and shake off the size you want. Replace them when soiled or moldy.

4. Fine metal mesh for ventilation

Cut a vent in the lid and one high on a side wall for cross-ventilation, then cover every opening with fine metal mesh, hot-glued in place. Adults can't climb smooth bin walls, but pinhead nymphs walk straight through drilled holes or coarse screen. Fine metal mesh (not plastic, which they chew) breathes while containing every life stage. Get this right once and you'll never find a roach loose.

5. A water-crystal dish and a hygrometer

Use polymer hydration crystals in a shallow dish for steady humidity and safe drinking water with no drowning risk — never an open water bowl, which nymphs drown in. A cheap hygrometer lets you hold the 60–70% humidity discoids want to breed. Too dry stalls nymph development; too wet grows mold and mites.

6. A starter colony of mixed sizes

Buy more than feels necessary, and buy mixed adults and nymphs if you can — a spread of sizes reaches steady production faster than all-adults or all-nymphs. The classic failure is starting small, getting impatient, and feeding off the founders before they reproduce. All Angles Creatures stocks discoid roaches in colony-starter quantities and mixed sizes for exactly this.

Setting it up

Assemble before the roaches arrive. Bin, side-mounted mat on its thermostat, vertical egg flats, mesh over every vent, water-crystal dish — all dialed in first, so the colony walks into ideal conditions.
Verify the warm zone reads 85–90°F with a thermometer before adding roaches. Don't trust the dial; read the actual temperature where they'll cluster.
Add the starter colony and a dish of dry protein base plus some produce.
Then leave it alone for 4–6 months. This is the hardest and most important part. Resist meaningful harvesting until the first home-grown generation matures. Harvest too early and the colony shrinks toward zero.

Feeding the colony

The colony's diet becomes your animals' diet one step removed, so feed it well:

A dry protein base, always available — a roach chow or quality whole-grain mix, kept in a dish at all times.
Fresh produce, rotated — carrots, squash, sweet potato, leafy greens, apple. Small amounts, pulled before they rot. Avoid heavy citrus, salty, oily, or processed food, and anything with pesticide residue.
Clean hydration from the water crystals.

Before you feed roaches off to your animals, gut-load the colony for 24–48 hours with rich produce and protein, then harvest. And remember: gut-loading improves the package but doesn't fix calcium. Discoids, like nearly every feeder, are phosphorus-heavy, so dust with calcium before feeding no matter how well-fed the colony is.

Maintenance and troubleshooting

Maintenance is light: don't over-clean (frass and shed skins are part of a healthy substrate and nymphs feed in it), spot-clean mold and old produce, do a full clean-out only once or twice a year, and check the thermostat seasonally.

When a colony struggles, work the causes in order of likelihood:

Stopped producing? Check temperature first, then humidity, then protein. It's cold far more often than anything else.
Bad smell? Healthy discoids are nearly odorless — a real smell means too wet, overcrowded, or rotting food. Dry it out, harvest down, remove old produce.
Sudden die-offs? Suspect bottom heat cooking them or an unregulated mat overshooting. Move the mat to the side and add a thermostat.
Grain mites or mold? Too wet. Dry the bin, remove wet food, increase airflow.

Bottom line

The "kit" is honestly just six things: opaque bin, side-mounted heat mat on a thermostat, vertical egg flats, fine metal mesh, a water-crystal dish with a hygrometer, and a generous mixed-size starter colony. Set the warm zone to 85–90°F, hold 60–70% humidity, feed protein plus rotated produce, dust with calcium at feeding time, and — above all — leave it alone for the first 4–6 months. Do that and discoid breeding becomes the most boring, reliable part of your animal room, which for a feeder colony is exactly the goal.

For the deeper biology, legality, and a full enclosure walkthrough, see my complete discoid roach care and breeding playbook. New to roaches as feeders? Start with why discoids beat other feeders, or browse the full feeder insect library.

More feeder insects