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Corn Snake — care sheet
Pantherophis guttatus · Beginner
| Adult size | 3–5 ft (90–150 cm) |
|---|---|
| Lifespan | 15–20+ years |
| Enclosure | Adult minimum 4×2×2 ft (48×24×24 in, a 120-gallon footprint), ≥2 ft tall. A tight-fitting, locking lid is essential — corn snakes are legendary escape artists. |
| Basking / warm zone | Basking/warm surface 90°F (32°C) from an overhead heat source, on a thermostat. |
| Cool side | Cool side ~75–82°F (24–28°C), giving a full thermal gradient with hides on both ends. |
| Night | Night at room temperature (~75°F/24°C is fine); no coloured night bulbs. |
| UVB & lighting | UVB is recommended: a T5 HO bulb giving UVI 2.0–3.0 at the basking spot (Ferguson Zone). Replace yearly. |
| Humidity | Ambient 65–75% — more than the old bone-dry caresheets suggested; helps with clean shedding. |
| Substrate | Aspen, cypress mulch, coconut fibre, or a topsoil/coco mix hold up well. Avoid pine and cedar. Keep moist enough to support the humidity range. |
| Diet | Carnivore — appropriately-sized frozen/thawed mice (about the width of the snake at its thickest). Frequency by size: hatchlings every 5–7 days, juveniles every 7–10, subadults every 10–12, adults every 14–21 (older adults ~10–14). |
| Supplements | None needed — whole-prey rodents are a complete diet. |
Before you buy
- A 4×2×2 ft enclosure with a genuinely secure, locking lid.
- Comfort feeding frozen/thawed mice (never live).
- A 15–20+ year commitment.
- An exotics/reptile vet within reach.
See a reptile vet if…
- Open-mouth breathing, wheezing, or mucus (possible respiratory infection).
- Regurgitating meals, or refusing food with real weight loss.
- Repeated stuck sheds or retained eye caps.
- Mites (tiny moving specks) or cheesy matter in the mouth (possible mouth rot).
- Any tissue protruding from the vent (prolapse).
Never
- Never feed live mice — use frozen/thawed to protect the snake.
- Never use pine or cedar substrate.
- Never trust a loose or lightweight lid — they will escape.
- Never handle for ~48 hours after a meal.
- Never house two snakes together.
Common corn snake questions
How hard are Corn Snakes to keep — are they good for beginners?
Beginner. The textbook first snake: hardy, reliable feeders, tolerant of small mistakes, and calm to handle. The only thing they excel at that you must respect is escaping.
What do Corn Snakes eat?
Carnivore — appropriately-sized frozen/thawed mice (about the width of the snake at its thickest). Frequency by size: hatchlings every 5–7 days, juveniles every 7–10, subadults every 10–12, adults every 14–21 (older adults ~10–14).
How big an enclosure do Corn Snakes need?
Adult minimum 4×2×2 ft (48×24×24 in, a 120-gallon footprint), ≥2 ft tall. A tight-fitting, locking lid is essential — corn snakes are legendary escape artists.
What basking temperature do Corn Snakes need?
Basking/warm surface 90°F (32°C) from an overhead heat source, on a thermostat.
What should the cool side be for Corn Snakes?
Cool side ~75–82°F (24–28°C), giving a full thermal gradient with hides on both ends.
What night-time temperature do Corn Snakes need?
Night at room temperature (~75°F/24°C is fine); no coloured night bulbs.
What UVB and lighting do Corn Snakes need?
UVB is recommended: a T5 HO bulb giving UVI 2.0–3.0 at the basking spot (Ferguson Zone). Replace yearly.
What humidity do Corn Snakes need?
Ambient 65–75% — more than the old bone-dry caresheets suggested; helps with clean shedding.
What substrate do Corn Snakes need?
Aspen, cypress mulch, coconut fibre, or a topsoil/coco mix hold up well. Avoid pine and cedar. Keep moist enough to support the humidity range.
What supplements do Corn Snakes need?
None needed — whole-prey rodents are a complete diet.
How big do Corn Snakes get?
3–5 ft (90–150 cm)
How long do Corn Snakes live?
15–20+ years
What are the signs Corn Snakes are sick or need a vet?
See a reptile or exotics vet if you notice: Open-mouth breathing, wheezing, or mucus (possible respiratory infection).; Regurgitating meals, or refusing food with real weight loss.; Repeated stuck sheds or retained eye caps.; Mites (tiny moving specks) or cheesy matter in the mouth (possible mouth rot).; Any tissue protruding from the vent (prolapse)..
Sources: ReptiFiles — Corn Snake Care · Association of Reptilian & Amphibian Veterinarians (ARAV) · Merck Veterinary Manual — reptiles. Written and fact-checked by The Baskden Team — kind, general guidance, not a diagnosisand not a substitute for an exotics vet. baskden.com