How Long Do Locusts Live?

How long do locusts live depends on which stage of the insect you are looking at. The flying adult can survive for a matter of weeks to a few months, while the egg and hopper stages stretch the full life cycle to several months or longer. If you are keeping locusts for feeding, study, or breeding, the real goal is not just lifespan, but holding them alive long enough to molt, mature, and reproduce.

Locust Lifespan at a Glance

A locust is a grasshopper in a swarming phase, so its life span is tied to rapid growth, molting, and reproduction. In warm conditions, the full life cycle from egg to adult takes about 2 to 5 months, and the adult stage lasts about 4 to 8 weeks. Cooler temperatures slow everything down, while poor food or crowding shortens adult life.

Egg, hopper, and adult stages

Locusts do not live as one long, simple adult stage. They pass through three main phases. Eggs remain in the soil for weeks to months. Hoppers, also called nymphs, feed and molt through several instars before developing wings. Adults emerge, mate, and lay eggs, then die. The shortest answer to how long does a locust live is this, the adult itself is short lived, but the complete insect life cycle is much longer.

Life span of locust by stage

• Egg: about 2 to 12 weeks in warm weather, longer in cooler conditions.
• Hopper: about 4 to 8 weeks, depending on temperature and food.
• Adult: about 4 to 8 weeks, with breeding adults at the upper end when well cared for.

What Affects How Long Locusts Live For

Food, heat, space, and stress shape lifespan more than age alone. Locusts live longer when they eat fresh green plant material every day, have warm but not overheated housing, and are not battered by damp, mold, or rough handling. Starvation and poor ventilation kill adults quickly, while overcrowding speeds up stress and injury.

Temperature and humidity

Keep locusts warm and dry. A daytime range around 80 to 90 F supports feeding and growth. Below that, activity drops and digestion slows. Excess moisture causes mold and bacterial problems, so use dry ventilation rather than humidity. A simple mesh lid and clean enclosure matter more than misting.

Food quality and density

Fresh grasses, wheat seedlings, corn leaves, oat shoots, and leafy garden greens support healthy locusts. Replace wilted food daily. Do not pack too many locusts into one container, because crowding raises leg injuries, cannibalism in stressed groups, and rapid die-off. A sparse, clean setup extends life far more than decorative accessories.

How to Keep Locusts Alive in Captivity

If you are asking how to keep locusts alive, the answer is a dry, warm, well ventilated container with fresh plant food and regular cleaning. Use an escape proof enclosure with enough height for molting and wing expansion. Keep the habitat simple, because locusts need airflow and easy access to food more than complexity.

1. Use a ventilated plastic box, mesh cage, or aquarium with a screened lid.
2. Add vertical sticks or egg cartons so the insects can climb and molt.
3. Place fresh grass, wheat shoots, or leafy greens in a shallow container.
4. Remove old food, frass, and dead insects every day.
5. Keep the enclosure warm, around 80 to 90 F, and out of direct sun.
6. Provide water by offering fresh greens, damp cotton in a capped dish, or moisture gel made for feeder insects, never an open water bowl.

Simple mistakes that shorten captive life

Wet substrate, direct sunlight, stale food, and tiny containers kill locusts fast. Do not spray water into the enclosure. Do not leave fruit inside, because it ferments and molds. Do not use loose soil unless you are breeding and need an egg laying medium, because ordinary maintenance is cleaner without it. Clean, dry conditions keep adults active and reduce deaths from fungus and dehydration.

How to Breed Locusts at Home

Breeding locusts at home works when you separate adults from the main rearing group and provide a soil container for egg laying. Adults mate after reaching maturity, and females deposit egg pods into moist sand or soil. Hatch time depends on warmth, so steady heat shortens the cycle and gives you more predictable batches.

1. Keep a mature pair or small group of adults in a warm breeding cage.
2. Add a removable tray of 2 to 3 inches of slightly moist sand or topsoil for egg laying.
3. Leave the tray in place for several days so females can deposit egg pods.
4. Remove the tray and hold it warm, not wet, until hatching begins.
5. Move hatchlings to a separate rearing container with tender grass or seedling greens.
6. Provide food daily and sort out crowded batches so the nymphs have space to molt.

Breeding conditions that matter most

Mated adults need access to both food and a proper laying medium. The soil should hold shape when pressed, but not drip water. If it is too dry, females will not lay properly. If it is too wet, eggs can fail. Clean separation between breeding adults, eggs, and growing nymphs gives the best survival rate and makes it easier to raise the next generation.

Locust Identification, Behavior, and Natural History

Locusts are large, strong flying grasshoppers with powerful hind legs, chewing mouthparts, and long antennae. In the solitary phase they blend in with grassland plants, but in the gregarious phase they gather in dense groups and migrate. Their swarming behavior is their most famous trait, not their lifespan. Adults feed on grasses and cereal crops, and hopper bands can strip plants quickly.

Senses, movement, and swarming

Locusts rely on vision, touch, and vibration detection to find food and avoid danger. They hop, crawl, and fly, and swarming adults can travel long distances with wind assistance. This migratory behavior helps them reach fresh vegetation, but it also drives their reputation as crop pests. Their role in ecosystems is double edged, they are prey for birds, reptiles, and predatory insects, yet they can damage fields when populations explode.

Culture and symbolism

Locusts appear in religious texts, folklore, and disaster imagery because swarms can erase vegetation in a short time. They symbolize scarcity, judgment, and upheaval in many traditions. That cultural weight comes from their behavior in the landscape, not from a long life span. They are brief lives with outsized ecological impact.

When Locusts Matter in the Garden

Locusts are not garden allies. If they appear in large numbers, the goal is exclusion and habitat management, not chemical spraying. Remove weedy grasses near beds, use row cover on young plants, and inspect for hopper bands around field edges. In small home gardens, hand removal and physical barriers work best. Healthy planting areas with fewer tall grasses near walls and fences give locusts fewer hiding spots.

Natural ways to reduce damage

Cut back grassy margins, mow regularly, and keep vulnerable seedlings covered during peak hopper activity. Encourage birds with native shrubs and water sources, because birds and other predators feed on locusts. For isolated insects on ornamentals or vegetables, a strong blast of water can knock them off plants. Diatomaceous earth is not the main answer for flying adults, but it can help in dry cracks and sheltered ground areas where young insects move through.

Frequently Asked Questions

How long do locusts live in captivity?

Adult locusts live about 4 to 8 weeks in captivity when kept warm, dry, and fed fresh greens every day. Poor ventilation, stale food, and overcrowding shorten that time sharply. If you are raising them from eggs, plan on a full life cycle of about 2 to 5 months from hatch to adult, plus the adult stage.

How long does a locust live if it is only an adult?

An adult locust lives for a few weeks to about two months. Its job is to mate and lay eggs, so the adult stage is short compared with the egg and hopper stages. Warm temperatures and steady food extend the adult phase, while stress, dehydration, and mold cut it down.

What do locusts eat?

Locusts eat grasses, cereal leaves, seedlings, and other tender green plant material. In captivity, fresh grass, wheat shoots, oat shoots, and leafy greens work well. Dry or wilted food does not support them for long, and sugary fruit causes mess and mold.

Can you keep locusts alive without water?

They need moisture, but not an open water dish. Fresh greens supply much of their water, and a capped source of moisture or insect gel can help in captivity. Open bowls cause drowning, so shallow, controlled moisture is the safe method.