Giant African Millipede Nutrition Guide: Optimal Diet and Feeding Schedule
Everything you need to know about feeding your Giant African Millipede, from dietary requirements and portion sizes to supplements and foods to avoid.
BLUF: Giant African millipedes (Archispirostreptus gigas and similar large species) are detritivores that do best on a high-fiber, moisture-rich diet of decaying plant matter, prepared fruit and vegetables, and occasional calcium/mineral supplements. Feed so that food is eaten within 24–48 hours (typical adult portion 1–2 tablespoons per feeding); increase frequency and portion slightly for juveniles and breeding animals, and always remove moldy food and consult your veterinarian if you see signs of ill health.
Dietary requirements and the nutritional science behind them
Giant African millipedes are true detritivores — they eat decomposing plant material and associated microbes rather than “fresh” prey. Their digestive systems are adapted for high-fiber, high-moisture diets with low-to-moderate protein and low fat. In captivity, replicate those conditions: aim for a diet that is high in indigestible fiber and water content, modest in protein, and low in fats and salts.Key nutritional targets to aim for (practical guidance, not exact lab diets):
- Fiber: high — aim for foods with substantial crude/structural fiber (many vegetables, leaf litter, rotting leaves). Practically, include a mixture of leafy detritus plus vegetable chunks.
- Protein: low to moderate — roughly 8–12% of intake is a reasonable target for captive diets; juveniles need somewhat higher protein relative to adults to support growth.
- Fat: low — try to keep added fats below ~5–8% of the total diet; avoid oily foods and fatty animal products.
- Moisture: high — most acceptable foods (fruits and vegetables) are 70–95% water; water-rich foods help prevent desiccation.
- Minerals and calcium: important for molts and egg production. Millipedes don’t have heavily calcified exoskeletons like crustaceans, but they still benefit from accessible calcium and trace minerals (see supplements section).
- Hatchlings/juveniles (recently hatched to ~1 year, depending on species): grow rapidly and require slightly higher protein and more frequent feedings (see schedule). Provide very small food pieces and softer foods so they can ingest material easily.
- Subadults: transition diet to include more fibrous material.
- Adults (reach typical lengths 20–30+ cm for A. gigas; sexual maturity often at 1–2 years, lifespan commonly 7–10 years in captivity): diet emphasizes fiber and moisture, with regular calcium supplementation for breeding adults.
- Temperature 22–27 °C (72–80 °F) and relative humidity 70–85% supports normal feeding and decomposition of offered foods.
- Microbial decomposition of leaf litter in the enclosure actually increases the palatability and nutrient availability for millipedes; allowing some natural decay (without mold overgrowth) is beneficial.
Safe foods, preparation, and portion guidelines
Offer a varied mix of decomposing leaf litter, soft vegetables, and occasional fruits. Variety mimics natural detritus and covers micronutrient needs. Prepare foods as follows:- Wash produce to remove pesticides and waxes.
- Cut into bite-sized pieces; for adults that typically means 1–3 cm chunks for vegetables and fruit, and smaller for juveniles.
- Prefer slightly aged/softened produce — a day or two of refrigeration or light fermentation increases palatability and microbial content.
- Avoid anything with added salt, oil, sugar, or spices.
- Leaf litter and composted leaves (oak, maple, beech): core component; provide continuously.
- Vegetables: carrots, squash, sweet potato (cooked or softened), cucumber, zucchini, green beans.
- Greens: romaine lettuce, dandelion greens, kale in moderation (watch oxalates), beet greens.
- Fruits (sparingly — high sugar): apple, pear, banana, melon, soft berries.
- Decaying wood and bark: small amounts of soft, rotting hardwood are eaten and aid gut flora.
- Calcium sources: cuttlebone, crushed eggshells, and calcium carbonate powder (see supplements section).
- Citrus (lemons, limes, oranges) — acidity can harm gut microbes.
- Onions, garlic, spicy or seasoned foods — toxic or irritating.
- Raw/processed meats, dairy, oily or salty human foods — not part of detritivore diet.
- Fungicide-treated or pesticide-sprayed produce — can be lethal.
- Heavy metals: avoid copper-rich wood and substrates.
- Adults: offer an amount that will be consumed in 24–48 hours — typically ~1–2 tablespoons (15–30 ml) of mixed food per adult per feeding. If food remains past 48 hours and shows mold, remove it.
- Juveniles: offer smaller portions; roughly 1–2 teaspoons (5–10 ml) per juvenile, refreshed more often.
- Breeding females and recently molted individuals: increase portions by ~25–50% and ensure extra calcium availability.
Comparison table — safe vs unsafe foods
| Food category | Safe / Use often | Unsafe / Avoid |
|---|---|---|
| Leaf litter & compost | Safe — staple, continuous supply | N/A |
| Vegetables (carrots, squash, zucchini) | Safe — daily/regular | Waxed produce if not cleaned |
| Greens (lettuce, dandelion) | Safe — moderation | Spinach/kale occasionally (oxalates) |
| Fruits (apple, banana) | Safe — occasional (weekly) | Citrus, sticky sugary treats |
| Protein sources | Small amounts (dogfish flakes, fish food rarely) | Raw/processed meat, dairy |
| Calcium sources | Cuttlebone, crushed eggshells | No calcium in improper forms (e.g., treated shells) |
| Treated wood/pesticide-sprayed plants | N/A | Avoid completely |
Supplements, water, and substrate-based nutrition
Supplements: Giant African millipedes benefit from periodic calcium and trace mineral supplementation, particularly during growth, egg production, and molting. Practical, safe approaches:- Calcium sources: place a small piece of cuttlebone or sprinkle a light dusting of food-grade calcium carbonate on vegetables once weekly. For adults, a light dusting once weekly or a small cuttlebone in the enclosure is typically sufficient. For breeding females and juveniles, increase access (e.g., twice weekly) but avoid heavy repeated dusting that creates dust clouds.
- Eggshells: clean, dry, crushed eggshells (baked at low heat to sterilize) are an inexpensive calcium source when offered in a small dish.
- Commercial invertebrate mineral blends: use sparingly and follow product directions; do not overdose.
- Millipedes get most water from food and humid substrate but benefit from a shallow water dish with a sponge or cork to climb on. Ensure the dish is shallow to prevent drowning of small juveniles.
- Maintain enclosure humidity around 70–85% relative humidity; daily light misting (once per day) plus a moist substrate (coconut coir, peat-free compost, leaf litter mix) will support this.
- Avoid standing, stagnant water that can become a bacterial source.
- A deep substrate (4–8 cm or deeper for adults, deeper if you keep breeding) made of a mix of leaf litter, composted hardwood leaves, coconut coir, and rotting wood provides both nutrition and habitat. Microbial decomposition within this substrate is an important food source — don’t sterilize it completely.
- Change or refresh substrate in sections rather than replacing all at once to preserve beneficial microbes.
- Avoid substrates with fertilizer pellets, lime, or strong alkaline additives that can alter pH and harm your millipedes.
- Avoid random vitamin/mineral cocktails without guidance; excessive dosages can be harmful. If you suspect deficiency (poor growth, unsuccessful molts), consult your veterinarian experienced with invertebrates for targeted testing and dosing.
Feeding schedules, monitoring, and troubleshooting
A consistent schedule helps avoid waste, mold, and nutritional gaps. Adjust feeding with life stage, season, and reproductive status.Feeding schedule (example guideline)
| Life stage | Frequency | Typical portion per animal | Notes |
|---|---|---|---|
| Hatchling / early juvenile (0–6 months) | Daily or every 24–48 hrs | 1–2 teaspoons (5–10 ml) | Very small pieces; higher relative protein; monitor closely |
| Juvenile (6–12 months) | Every 1–2 days | 1–2 tsp to 1 tbsp (5–15 ml) | Increase portion as size grows; keep substrate moist |
| Subadult (12–24 months) | Every 2–3 days | 1 tbsp (15 ml) | Transition to more fibrous offerings |
| Adult (2+ years) | Every 2–3 days | 1–2 tbsp (15–30 ml) | Vary foods; provide calcium weekly |
| Breeding females / postpartum | Every 1–2 days | 1.5–3 tbsp (20–45 ml) | Increase calcium and minerals; watch for egg-laying behavior |
- Appetite and activity: Healthy adults should be actively exploring and feeding, particularly at night. Reduced feeding for 1–2 days can be normal around a molt but persistent anorexia (>3–5 days) is concerning.
- Molting: Look for pre-molt behavior (reduced feeding, seeking moist hiding places). Provide extra humidity and calcium support during molts.
- Signs of overfeeding: Mold growth, large uneaten food piles, increased mite populations. Remove uneaten food within 24–48 hours if it begins to visibly spoil.
- Weight and growth: Track juvenile growth by measuring length monthly; adults that are losing mass or not being active may be ill or in an unsuitable environment.
- Mold or fungal overgrowth: Cut back feeding frequency, remove affected substrate/food, increase ventilation slightly while maintaining humidity. Mold spores can stress or harm millipedes over time.
- Parasites and pests (mites, springtails): Some tiny commensal springtails are harmless and can help break down waste; heavy mite infestations may require substrate changes and veterinary advice.
- Poor molt or failed molt: May indicate inadequate humidity or mineral deficiency — increase humidity, provide extra calcium, consult your veterinarian.
- Persistent lack of appetite, abnormal coloration, failed molts, or obvious wounds. These can indicate underlying infection or severe nutritional deficiency.
- For breeding advice, to confirm health of eggs/offspring, or before administering any medications or unfamiliar supplements.
- Feed a high-fiber, moisture-rich, low-fat diet focused on leaf litter, soft vegetables, and occasional fruit; offer amounts that will be eaten within 24–48 hours.
- Typical adult portions: ~1–2 tablespoons per feeding every 2–3 days; juveniles require smaller, more frequent feedings.
- Provide calcium (cuttlebone, crushed eggshells, light powdered calcium once weekly) and keep substrate moist (70–85% RH) with a shallow water source.
- Avoid citrus, onions, processed/salty/oily foods, pesticide-treated plants, and raw meats; remove moldy food promptly.
- Monitor appetite, molting, and behavior; consult your veterinarian experienced with invertebrates for persistent health or nutritional concerns.
Frequently Asked Questions
How much should I feed my Giant African millipede (Archispirostreptus gigas) and how often should I feed it?
Feed adult Archispirostreptus gigas about 1–2 tablespoons of prepared fruit/vegetables or decaying plant matter per feeding and remove leftovers after 24–48 hours. Juveniles and breeding animals need slightly larger portions or more frequent feedings — adjust so food is consistently eaten within a day or two. Check consumption and body condition and avoid overfeeding to prevent mold and rot.
What is the best diet for a Giant African millipede and are there foods I should avoid for Archispirostreptus gigas?
Provide a high-fiber, moisture-rich diet of decaying leaf litter, soaked leaf litter/wood, and prepared vegetables and fruits low in acidity (e.g., squash, sweet potato, leafy greens, banana in moderation). Avoid citrus, onions, garlic, salty or processed human foods, oily fruits like avocado, and anything with pesticides; long-tail searches such as "is citrus dangerous for giant African millipedes" or "what can I feed Archispirostreptus gigas" point to these same exclusions. Always remove moldy food promptly.
Do Giant African millipedes need calcium or mineral supplements and how should I offer them?
Yes, provide accessible calcium and trace minerals especially for juveniles and breeding adults by offering cuttlebone, crushed eggshells, or a light dusting of reptile/bird mineral powder occasionally. Place supplements in a shallow dish or mix small amounts into food so they can self-regulate and avoid heavy, daily dosing. Monitor for signs of deficiency (softening, poor molts) and consult a vet if you suspect a problem.
How can I tell if my Archispirostreptus gigas is not eating enough or if its food is causing mold and illness?
If food remains uneaten beyond 48 hours or you see visible mold, remove it immediately; signs your millipede isn’t eating enough include weight loss, lethargy, decreased mobility, and abnormal molting. Mold can be dangerous and contribute to poor health, so improve ventilation, reduce portions, and maintain substrate moisture levels; if symptoms persist, seek veterinary advice. Long-tail queries like "is mold dangerous for giant African millipedes" are valid concerns and warrant prompt action.
Related Health Conditions
References & Citations
Parts of this article reference data from allpets.ai.
Reviewed by: AllPets Veterinary Advisory Board on July 2, 2026