What Do Termites Eat?

Termites are specialized to digest cellulose, the tough material that makes up plant cell walls. Wood is their most common food source, and termites are extremely efficient at breaking it down into simple sugars their bodies can use. Different termite species have different preferences. Subterranean termites, the most common kind in North America, favor softwoods like pine and fir but will eat hardwoods too. Drywood termites prefer dead wood that stays dry and can infest furniture and wooden structural beams. Dampwood termites live only in wood with very high moisture content. Some termite species also eat grasses, dried plant material, and fungi. They may even consume paper, cardboard, and plant roots if wood becomes scarce. A termite colony works as a single unit, with different castes passing food mouth to mouth to share resources throughout the /wildlife network.

Termite feeding activity changes with the seasons across most of the United States. In spring and summer, when temperatures warm, termites become more active and feed more aggressively on wood and plant material. They expand their foraging areas and work harder to gather resources for the growing colony. In fall, activity remains high as termites prepare for winter by stockpiling food. Winter brings reduced activity in cooler northern regions. Subterranean termites retreat deeper into their tunnels and soil to escape freezing temperatures, though they continue to feed slowly on cached food and any wood in contact with the ground. In southern states where winters are mild, termites may feed year-round with little interruption. Dampwood termites in coastal areas remain active during winter months since their wood habitat retains moisture. The seasonal pattern affects when termite damage becomes most visible and when you are most likely to encounter swarms of reproductive termites flying to start new colonies.

Termite diet varies across the United States depending on available wood types and local vegetation. In the eastern and southern states, subterranean termites dominate and prefer the pine forests that supply softwood to their colonies. Check /wildlife/virginia/termite for information about termites in eastern regions. In the Pacific Northwest, termites encounter abundant cedar, fir, and hemlock. Western states including Wyoming host drywood termite species that survive in drier climates. Southern swamps and humid regions support dampwood termites in fallen logs and wet wood, like those in West Virginia. Termites in each region also feed on native plants appropriate to that climate. Desert termites in arid western areas may rely more heavily on dried grasses and shrubs when wood is scarce. Coastal termites in Florida and other coastal zones feed in an environment rich with decaying salt marsh vegetation and mangrove wood. Urban and suburban areas across all regions present termites with new food sources like wooden houses, decks, mulch, and landscape timbers. The local plant group directly shapes what termites can access and consume.

Termites use foraging behavior to locate and transport food back to their colony. Subterranean termites build mud tubes above ground to travel safely from their soil nests to wood sources while avoiding dry air and light. Worker termites follow pheromone trails laid by scouts who find new food. Once a food source is found, hundreds of workers may converge on it, chewing and working together to break the wood into manageable pieces. The tunnels termites create through wood are incredibly organized, following the grain and avoiding structural areas that would make the wood collapse too quickly. This allows termites to feed for months or years before a structure fails. Drywood termites live inside solid wood and create galleries as they feed, leaving only paper-thin shells of wood on the outside. They do not need external moisture and do not build mud tubes. Dampwood termites work more slowly but systematically through the wood of logs and fallen trees, creating large hollow chambers. All termite species use their powerful jaws and microbial helpers to break plant fibers into digestible nutrition.

Termite colonies contain eggs, larvae, nymphs, and adults, each with slightly different roles in the colony structure. Eggs are laid by the queen and receive no food directly. Once nymphs and larvae hatch, they are fed by worker termites through a process called trophallaxis. Workers produce a nutritious liquid from their own bodies and feed it to young termites. This same process allows the colony to share symbiotic bacteria that break down wood fibers, which young termites must acquire to survive. Young termites begin helping with feeding and tunnel work as they grow, but they do not immediately have full foraging duties. Larger nymphs and young workers eat the same plant cellulose diet as adults but require smaller portions and more assisted feeding. As termites mature, they become independent foragers and contribute more to feeding the colony. The soldier caste, which develops from some nymphs, eats the same foods but has enlarged heads for defense rather than feeding efficiency. Reproductives that eventually leave the colony to swarm also eat wood and plant material until they find a mate and establish a new nest.

Termites encounter abundant food in yards, gardens, and buildings across North America. Wooden decks, fences, mulch piles, and landscape timbers provide termites with accessible sources of dead wood close to human structures. Cardboard, paper products, and stored wood are all attractive to termites in sheds and basements. Termites feed on the woody parts of garden plants and can damage ornamental trees and shrubs over time. To prevent termite damage, keep wood materials away from soil contact when possible and ensure proper ventilation to avoid moisture buildup. Remove dead trees, stumps, and fallen branches from your property, as these attract termites and serve as staging areas for colony expansion. Mulch that touches your house foundation can provide a bridge for termites to access wood siding. Do not feed termites intentionally. Even well-meaning attempts to create habitat for wildlife should not involve storing firewood against your home or leaving dead wood in contact with structures. A small gap between firewood piles and your house can make a significant difference in preventing infestation and damage.

Carpenter ants and termites are often confused because both damage wood in buildings, but their diets and behaviors are fundamentally different. Termites actually eat wood and digest the cellulose fibers as nutrition. They break down wood into smaller pieces and use it as food energy for their entire colony. Carpenter ants, by contrast, do not eat wood. They chew through wood to create galleries and nesting chambers, but they throw out the wood dust and feed on other insects, seeds, and sweet substances. Carpenter ants are omnivorous and often forage outside the nest for food. Termites remain inside their wood or soil nests and depend entirely on cellulose and plant fibers. Termites are also more organized and industrious in their tunneling, creating systematic galleries that follow wood grain, while carpenter ants create more random-seeming chambers. Termite colonies are much larger, sometimes containing millions of individuals, whereas carpenter ant nests typically have fewer workers. Both can cause serious structural damage, but termites cause damage more rapidly because they consume wood continuously as food. Identifying which pest you have is important for choosing the right treatment approach to protect your home.