Gardening Houseplants Caring for Houseplants Growing Insect-Eating Plants Indoors So-called insect-eating plants aren't like dinosaurs—you don't need to toss them a steak to make them happy. A fly or other tiny living insect will do. By Deb Wiley Deb Wiley Deb Wiley's goal as a writer and editor is to bring the joy of gardening to readers by cultivating their relationship to growing and planting. After 20 years as a newspaper reporter, Deb melded her lifelong passion for gardening with her writing and photography experience when she became the garden editor for Midwest Living magazine. Since starting her freelance career in 2008, she has been a highly sought-after writer, editor, and creative project manager for a wide range of magazines, books, and online garden articles. where she brings personal experience as well as deep connections to specialists in the world of horticulture. Learn about BHG's Editorial Process Published on June 9, 2015 Share Tweet Pin Email To grow insect-eating plants indoors, you'll be most successful re-creating the kind of conditions where they grow in nature. Beware, though: Insect-eating plants can be a bit more challenging to grow than the average houseplant. Insect-eating plants need high humidity, bright (but not direct) light, and a special growing medium that is moist and acidic. Use water purified by either distillation or reverse osmosis; tap water may contain too many additives or be too alkaline. Related: Is your insect-eating plant poisonous? Review our list to find out. Humidity Requirements Most homes have lower humidity than what carnivorous plants desire. To increase humidity, place them inside a fish tank with a lid or an enclosed glass terrarium. The plants also need air circulation, so keep a lid slightly ajar, remove it from time to time, or run a small fan in the fish tank. Related: Learn more about humidity guidelines for houseplants. Light Requirements Insect-eating plants need bright light to grow properly. Indoors, place insect-eating plants in an east- or west-facing window that gets at least 1 to 2 hours of sun. If your plants are potted inside a glass terrarium or fish tank, keep them out of direct sunlight so the heat that builds up inside doesn't burn your plants. A fluorescent light fixture with two 40-watt tubes can be hung about 8 inches above the plants to provide more light. Related: Get more information about plant lights. Soil Requirements Most insect-eating plants are natives of boggy areas but don't grow in completely flooded conditions. They prefer acidic, well-drained soil. Don't use potting mix; it's too rich for these plants. They need no extra fertilizer. Create your own growing medium by blending 1 part clean coarse sand with 2 parts sphagnum peat moss. If you plant inside a terrarium, place an inch of small rocks or coarse gravel below the potting medium to help with drainage. Related: Learn how to make a terrarium for small plants. Attracting Prey Although their leaves collect sunlight to produce chlorophyll and make food via photosynthesis like other plants, insect-eating plants grow best when their diet is supplemented with insects. Outdoors, this happens naturally. Indoors, it's best to release insects in a closed environment where the plants can attract and trap them. In most cases, the insects must be alive for the plants to eat them. Enzymes in the digestive system of the plant destroy the insects, and the plant absorbs the nutrients. Test Garden Tip: Do not feed your insect-eating plants little bits of hamburger or other meats—they have too much protein for the plants to digest. Common Insect-Eating Plants Depending on the plant, insect-eating plants use several mechanisms to capture their prey: pits to fall into; sticky flypaper-type sections; snap traps; vacuum suction; and inward-pointing hairs that operate like a lobster trap. There are hundreds of types of insect-eating plants but these are among the most commonly grown by gardeners. Never collect them from the wild; many are on protected or endangered species lists. Always check the source of your nursery's plants. Hardy pitcher plants (Sarracenia spp.) are native to many boggy areas of North America. You can recognize them by their long necks and delicate hoods covering the openings. Sundew (Drosera spp.) leaves are rounded and covered with sticky, red tentacles. Insects attracted by the sweet smell trigger the tentacles to close and the plant to digest the insect. Tropical pitcher plants (Nepenthes spp.) grow in tropical rain forests and have strappy leaves that end in a tendril holding a hanging water-filled pitcher. Because of their pendulous nature, these plants are best grown in hanging baskets. Venus flytraps (Dionaea muscipula) grow slender leaves topped with clamshell-type flowers ringed with tiny "teeth." When an insect lands on the pink center of the clamshell, the hinge quickly shuts, trapping the prey inside. Related: Learn more about growing Venus flytraps. Related: Learn more about pitcher plants. Was this page helpful? Thanks for your feedback! Tell us why! Other Submit