Housing Hermann's Tortoises requires outdoor enclosures in appropriate climates with minimum dimensions of 4x8 feet (32 square feet) for single adults, though 6x10 feet or larger is preferred particularly for the larger Eastern subspecies. Multiple tortoises require substantially more space with general recommendation of 16+ square feet per additional tortoise. Outdoor housing in suitable climates (USDA zones 7-10 depending on subspecies cold tolerance, or Mediterranean-type climates) allows natural sun exposure, temperature variation, and space essential for optimal health. Western Hermann's require milder climates without hard freezes, while cold-hardy Eastern Hermann's tolerate zone 7 conditions with appropriate shelters. Indoor housing is possible for juveniles or winter housing, though permanent indoor keeping of adults is challenging and suboptimal.
Outdoor enclosure construction requires tortoise-proof fencing preventing escape while excluding predators. Use smooth solid material preventing climbing or close-mesh that tortoises cannot see through, minimum 12-18 inches tall with 4-6 inches buried preventing digging under. Hermann's Tortoises are persistent escape artists requiring secure fencing checked regularly. Predator protection may include top netting if aerial predators are present and secure fencing excluding dogs, foxes, and other ground predators. Provide varied terrain including sunny basking areas, shaded zones, planted areas with edible vegetation, and multiple shelter options.
Substrate should be natural soil allowing digging and supporting plant growth. Top dressing with sandy soil improves drainage while maintaining planting capabilities. Depth of 4-6 inches allows shallow digging. Good drainage prevents waterlogging while maintaining moisture supporting vegetation. The substrate should support diverse safe plants providing natural forage and cover. Avoid pure sand or pure clay, preferring soil mixes approximating Mediterranean habitat providing structure and moderate drainage.
Temperature management in outdoor enclosures relies on natural climate with provision of diverse microhabitats. Sunny areas allow basking reaching hot temperatures, shaded retreats provide cooling, and insulated shelters buffer extremes. In climates with occasional cool nights during growing season, heated shelters may be needed. In climates requiring winter housing, provide appropriate indoor facilities with heating (maintaining 70-80Β°F ambient with 95-100Β°F basking), UVB lighting, and adequate space (minimum 3x6 feet for adults). Some keepers allow natural brumation in cool indoor conditions (45-55Β°F) mimicking winter dormancy, requiring proper preparation.
Shelters are essential providing security, sleeping areas, and thermal refuges. Provide multiple options including dog houses, commercial tortoise houses, or custom shelters. Shelters should be insulated, dry, and appropriately sized allowing entry and turning. Position with entrances receiving morning sun encouraging emergence and basking. Substrate inside should be dry hay or straw providing insulation. Heated shelters using ceramic heat emitters may be necessary during cool periods. Multiple shelters distributed throughout enclosures prevent competition and provide options.
UVB exposure in outdoor enclosures comes from natural sunlight providing optimal UV radiation. This is a primary advantage of outdoor keeping, eliminating dependence on artificial UVB. However, shade options are necessary allowing regulation of exposure. For indoor housing, high-quality UVB bulbs (10-12% output) positioned 10-12 inches above basking areas are mandatory, requiring replacement every 6-12 months. Natural outdoor exposure during suitable weather supplements indoor UVB for tortoises kept primarily indoors.
Humidity management requires moderate levels (50-70%) preventing both dehydration and respiratory problems from excessive dampness. Outdoor enclosures in Mediterranean climates typically provide appropriate humidity naturally. Provide humid retreats or hide boxes with damp substrate for shedding if ambient humidity is low. Good ventilation prevents stagnant damp conditions particularly in shelters. Misting during dry periods helps maintain humidity while drainage prevents waterlogging. They are more tolerant of humidity variation than sensitive species though extremes should be avoided.
Water provision through shallow sturdy dishes allowing drinking and soaking is essential. Change water daily. Hermann's Tortoises drink regularly and soak periodically particularly before shedding. Water depth should be shallow (approximately depth of plastron) preventing drowning while allowing entry. Multiple water stations in large enclosures ensure access. Dehydration is serious particularly during hot weather if water isn't consistently available.
Vegetation management involves providing edible plants creating natural forage. Suitable plants include grasses, dandelions, clover, plantain, chickweed, and various safe forbs. Some keepers seed enclosures with appropriate mixes creating grazing opportunities. Allow natural growth with supplemental feeding as needed. Avoid toxic ornamentals ensuring any plants are pesticide-free. Living plants provide forage, visual interest, humidity moderation, and enrichment.
Maintenance includes daily fresh water, visual health monitoring, seasonal care adjustments, feeding supplementation if natural forage is inadequate, and shelter checks. Weekly tasks include detailed health observations, water dish cleaning, fencing inspection, vegetation assessment, and general maintenance. Monthly or seasonal tasks include comprehensive health assessment with weighing, vegetation management, shelter maintenance, seasonal transitions, and record-keeping.