Rosy Boa (Lichanura ssp.) in a dry vivarium setup

Snakes · Care guide

Rosy Boa Care Guide

Lichanura ssp.

Beautiful small boas (Lichanura ssp.) from northwest Mexico into the southwestern United States — scrub, rocky slopes and semi-desert. Several species from about 2 ft to under 4 ft. Dry heat with a probe target of 80 °F, a wet box for humidity choice, Shadedweller Max UV, and a rodent diet sized to girth.

At a glance

Quick facts

Key parameters for day-to-day husbandry. Full detail is in the sections below.

  • Daytime probe

    80 °F

    27 °C · thermostat sensor

  • Night drop

    ~10 °F

    ~70 °F · ~21 °C

  • Diet

    Rodents

    By girth · size stages

  • UVB

    Shadedweller Max

    Ceiling-mounted UV

01 · Housing

Enclosure & housing

Dry terrestrial boas that hide by day and bury to escape heat and find humidity. Dry substrate with a wet box, hides on both ends, branches, tunnels, artificial plants, and a clear temperature gradient. Smaller species from 24″ × 18″ × 18″; larger forms up to 48″ × 18″ × 18″ or more.

Adult minimum size

24″ W × 18″ D × 18″ H

Smaller species minimum; larger forms 48″ × 18″ × 18″ or larger. Dry setup with heat bulb, Shadedweller Max UV, wet box, and a small water bowl.

Decor

  • Minimum 2 hides — one cool side, one hot side
  • Fill the ground with hides, branches and tunnels — more cover means a more secure snake
  • Wet box with damp moss — slight humidity on demand (bury / shed)
  • Artificial plants for natural aesthetic appeal
  • Small water bowl at all times (they often drink only 1–2×/month)

Substrate

  • Dry species — pelleted straw bedding or any meant for dryer species
  • Avoid fine mineral sands that can cause impaction

Cleaning

  • Daily: spot clean to limit bacteria and odours
  • About every six weeks: full clean if kept relatively clean — replace substrate, disinfect decor and vivarium

Housing diagram

Enclosure example

Front view 24″ wide × 18″ tall (depth 18″) · smaller spp. minimum · hides · branches · tunnels · wet box · foliage · small water bowl

Example Rosy Boa vivarium front view at 24 inches wide by 18 inches tall Front elevation of a smaller-species adult Rosy Boa vivarium at 24 by 18 inch proportions (4:3 front). Heat dome on the warm left about one-quarter of the way in, Shadedweller Max UV on the ceiling, branches and tunnels, hides on warm and cool ends, a wet box with damp moss for humid choice, artificial plants, a small water bowl, and dry pelleted straw substrate. Depth is 18 inches. Smaller species adult minimum 24 by 18 by 18 inches; larger forms up to 48 by 18 by 18 or more. SMALLER SPP. MINIMUM · FRONT 4:3 24″ W × 18″ D × 18″ H 18″ tall 24″ wide · depth 18″ · height 18″ Branches Foliage Hides Tunnel Wet box Water bowl Dry substrate WARM COOL
  • Front proportions — 24″ wide × 18″ tall (4:3); depth 18″ — smaller species minimum; larger forms up to 48″ × 18″ × 18″ or more
  • Branches & tunnels — fill the ground area for security and enrichment
  • Hides — minimum two: one cool side, one hot side (they hide by day and bury from heat)
  • Wet box — damp moss so the snake can choose humidity, especially when shedding
  • Small water bowl — always provide; they often drink only once or twice a month
  • Substrate — dry pelleted straw or other dry-species bedding; daily spot clean, full clean about every six weeks

Setup diagram · 1 of 2

Top-down view

Heat bulb & probe left–right positions · Recommended temps need this layout

Vivarium top-down: heat bulb and thermostat probe positions Rectangular vivarium viewed from above. Heat bulb one-quarter of the way from the left side, halfway between front and back. Thermostat sensor one-quarter of the way from the right side, along the back wall. BACK FRONT Heat bulb ¼ from side · mid depth Thermostat probe ¼ opposite · back wall hangs to near floor WARM COOL ≈ ¼ ≈ ¼

Setup diagram · 2 of 2

Front view

Looking into the vivarium · bulb on the ceiling · probe hangs down the back

Vivarium front view: heat bulb and thermostat probe heights and side positions Front elevation of the vivarium. Heat bulb sits on the ceiling about one-quarter from the left. Thermostat probe hangs down the back wall about one-quarter from the right, with the sensor tip a few inches above the floor. CEILING FLOOR / SUBSTRATE back wall (behind) Heat bulb on ceiling · ≈ ¼ from side few inches Thermostat probe hangs down the back ≈ ¼ from opposite side WARM COOL ≈ ¼ ≈ ¼
  • Heat bulb — about one-quarter from one side, halfway front to back (on / through the ceiling)
  • Probe — one-quarter from the opposite side, hanging down the back, resting a few inches from the floor

02 · Climate

Temperature & UVB

Dry heat with a clear cool-to-warm gradient (probe 80 °F · cool ~78 · mid ~82 · warm 85–88 · bask ~90 °F), Shadedweller Max UV, and a wet box so the snake can choose humidity rather than high ambient moisture.

Daytime temperature gradient

When the heat bulb and thermostat sensor are placed as instructed, a probe target of 80 °F (27 °C) creates this spread. The probe point is not the basking spot.

Daytime temperature gradient by zone, plus night drop
Zone Temperature
Cool side ~78 °F (~26 °C)
Probe point (thermostat probe target) 80 °F (27 °C)
Middle ~82 °F (~28 °C)
Warm side 85–88 °F (29–31 °C)
Basking spot ~90 °F (~32 °C)
Night drop Reduce thermostat by ~70 °F (~21 °C) at night · ~10 °F drop

Photoperiod & night

  • Winter: about 12 hours light/heat
  • Summer: up to 16 hours when days are longer
  • Night: reduce thermostat by ~10 °F (~6 °C) to approx. 70 °F (~21 °C)
  • Night drop lets metabolism slow — essential for the snake

UVB lighting

  • Shadedweller Max — recommended even though snakes are generally nocturnal
  • They may access UV in daylight (even while resting with part of the body exposed)
  • Mount on the ceiling of the vivarium
  • Heat about 12 hours in winter and up to 16 hours in summer

Climate diagram

Lighting setup

Shadedweller Max on the ceiling · heat dome on the warm side · match UV to heat

Vivarium lighting: Shadedweller Max on ceiling and heat dome on warm side Front view of a Rosy Boa vivarium. A Shadedweller Max UV unit sits on the ceiling. A heat bulb in a dome sits on the warm side, about one-quarter from the left. UV and heat follow the same on/off schedule. Daytime heat is about 12 hours in winter and up to 16 hours in summer when days are longer. CEILING FLOOR Shadedweller Max Ceiling mount · for snakes Heat bulb / dome Warm side · ≈ ¼ from end WARM COOL PHOTOPERIOD (UV HOURS) Winter ~12 h Summer up to 16 h
  • Shadedweller Max — ceiling-mounted; snakes may access UV during daylight even when largely nocturnal
  • Heat dome — warm side (~¼ from end); same on/off routine as UV
  • Day length — about 12 hours in winter, up to 16 hours in summer when days are longer
  • Night drop — reduce thermostat ~10 °F in the evening so metabolism can slow

Dry species · humid choice

  • A dry species — pelleted straw or other dry-species bedding works well
  • In the wild they bury for humidity as well as heat escape — use a wet box with damp moss so they can choose
  • Especially useful when shedding; slight humidity on demand without raising whole-viv moisture
  • Small water bowl always provided — they often drink only once or twice a month
First power-up tip

Always have the thermostat dial turned down before you plug it into the mains for the first time. Set the probe to 80 °F (27 °C) for daytime once the heat bulb and sensor are in place.

03 · Nutrition

Diet & feeding

Rodent feeders sized to girth. Settle first, then build a steady schedule — evening or overnight feeds suit most individuals.

At a glance

Feeding cheat sheet

Prey
Frozen prey – always feed thawed prey (rodent feeders)
Schedule
Young 2×/week · sub-adults every 5 days · adults 1×/week
Food size
Match girth of the snake (not head size) — roughly as thick as the body
When
Evening / overnight preferred · allow overnight to eat · remove uneaten by morning

Prey size stages

Guide as the snake grows — size relative to girth

Prey Frequency
1 pinkie 2× per week
2 pinkies 2× per week
1 fluff 2× per week
2 fluffs Every 5 days
1 hop Every 5 days
1 small mouse Every 7 days
1 medium mouse Every 7–10 days
1 large mouse Every 10–12 days
1 extra-large mouse Every 14 days

Feeding routine

  • Allow the snake to settle before offering food — new arrivals often will not eat well the first week
  • Some take food from tweezers; others prefer floor and overnight — give ample overnight time
  • If uneaten by morning, throw the mouse away and try again on the next scheduled feed
  • Do not offer more frequently than usual — that can stress the snake
  • Missing the occasional meal is fine — they do not feed to a strict wild regime

Water

  • Provide a small water bowl at all times as good husbandry
  • Rosy boas often drink only once or twice a month — still keep fresh water available
Shedding & natural fasts When not to feed · breeding · slough cycle

Snakes may naturally refuse food at times — breeding season (males especially can go off feed for many months), and during shed (slough). The shed process can take 1–2 weeks; you may not notice the very beginning.

  • Skin looks dull, belly creamy, then eyes go blue — height of shed; they usually will not feed
  • Eyes clear and colour looks a little clearer — old skin lifting; about 2–3 days until the actual shed
  • Do not feed during this period; wait until you find a shed, then feed on the next due date

Speak to a member of staff if feeding concerns continue after settlement and shed cycles.

04 · Behaviour

Handling & behaviour

Patience first. Settling and regular feeding come before handling.

  1. Step 1

    Settle first

    Allow the snake to settle and begin eating regularly before handling — we recommend at least two successful feeds first. Adapting is stressful; early handling can make it worse.

  2. Step 2

    Short sessions

    Initial sessions: 5–10 minutes only. Lengthen as the snake becomes more comfortable.

  3. Hygiene

    Wash hands

    Always wash or disinfect hands before and after handling to prevent bacteria transfer both ways.

  4. Warning

    No aerosols

    Do not use aerosols or plug-in air fresheners near the enclosure — the chemicals can harm reptiles.

05 · Welfare

Health & welfare

Prevention starts with correct husbandry — heat, UV, hydration, and safe substrate working together.

Best prevention: good husbandry

Correct temperatures, hydration, and UV where used keep the immune system and gut working well — supporting essential physiological processes.

Inert substrates Paper, lino, carpet — pros & cons

Pros

  • Lower impaction risk

Cons

  • Limit natural behaviours such as digging
  • Remove natural digging behaviour
  • Can increase faecal contamination (waste less absorbed than traditional substrates)

Questions

FAQ

What size vivarium does a Rosy Boa need?

Adult minimum is 24″ × 18″ × 18″ for smaller species, up to 48″ × 18″ × 18″ or larger for bigger forms. Dry pelleted straw (or other dry-species bedding) with a wet box of damp moss so they can choose humidity — especially useful when burying or shedding. Provide at least two hides (cool and hot), branches, tunnels, artificial plants, and a small water bowl. Heat bulb with the ¼/¼ probe method and Shadedweller Max UV.

What temperatures does a Rosy Boa need?

Set the thermostat probe to 80 °F (27 °C) by day with the heat bulb about one-quarter from one side and the probe one-quarter from the opposite side, hanging down the back a few inches from the floor. That creates a gradient of about 78 °F cool, around 82 °F in the middle, 85–88 °F warm, and around 90 °F under the basking bulb. At night reduce the thermostat to around 70 °F (21 °C).

What UV and photoperiod do they need?

Although snakes are generally nocturnal, use a Shadedweller Max UV system — research supports that they may access UV during daylight hours. Mount on the ceiling. Daytime heat about 12 hours in winter and up to 16 hours in summer when days are longer.

How big do Rosy Boas get?

Several Lichanura species range from about 2 ft to less than 4 ft, which makes them relatively easy snakes to house. Adult vivarium size scales with the form — smaller species from 24″ × 18″ × 18″, larger up to 48″ × 18″ × 18″ or more.

When can I start handling my Rosy Boa?

Allow the snake to settle and begin eating regularly before handling — at least two successful feeds first. Early sessions 5–10 minutes only; lengthen as they become more comfortable. Wait about 24 hours after feeding before handling so digestion is not interrupted. Always wash or disinfect hands before and after. No aerosols or plug-in air fresheners near the enclosure.

How often should I feed a Rosy Boa?

Young snakes twice a week while growing; sub-adults about once every five days; adults about once a week. Prey size should match the snake’s girth (not head size). Move up a size if a meal leaves no noticeable bulge a few hours after eating. Feed in the evening or overnight; remove uneaten food by morning. Do not feed during shed — wait until after the shed is complete.

Next steps

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