Venus Flytrap Care Guide

Quick care at a glance

1. Give it plenty of sunshine

Venus flytraps grow best outdoors in full sun, with at least six hours of direct sunlight each day. Good light supports strong growth and helps many varieties develop colorful traps.

A sunny windowsill usually does not provide enough light for long-term growth. If you must grow your flytrap indoors, you will need a sufficiently powerful grow light and a plan for its winter dormancy.

For your new House of Carnivores plant: Our flytraps have been growing outdoors in sunshine. Place yours in a sunny outdoor location and watch how it responds during its first few days in your care.

2. Use the right water

Venus flytraps are adapted to nutrient-poor bogs. Minerals in ordinary tap water can accumulate in their growing medium and damage their roots.

Use only distilled water, clean rainwater, or reverse-osmosis (RO) water.

During the active growing season, place the pot in a shallow tray containing approximately ¼–½ inch of water. Refill as needed to keep the growing medium consistently moist.

Never let the pot dry out completely. During winter dormancy, reduce watering and keep the medium damp rather than constantly waterlogged.

3. Feeding your flytrap: the fun part!

Watching a Venus flytrap catch an insect is one of the most fascinating parts of growing one. Each trap has sensitive trigger hairs that detect movement. When an insect touches them in the right sequence, the trap snaps shut.

Do I need to feed it?

Not necessarily! An outdoor flytrap usually catches insects on its own.

Feeding is optional, but you can offer an occasional meal if you would like to observe how its traps work. You don’t need to feed every open trap or follow a feeding schedule.

What can I feed it?

Small live insects

Flies and other small insects are a natural choice. Choose an insect that fits comfortably inside the trap.

Rehydrated freeze-dried bloodworms

Bloodworms are the larvae of non-biting midges, so they provide an insect-based meal. Soften them in water before feeding.

The size of the meal matters more than the number of bloodworms. As a simple guideline, aim for a portion no larger than about one-third of the trap’s length. The trap should be able to close and seal completely around the food.

Do not feed your flytrap hamburger, cheese, or other human food.

How do I feed freeze-dried bloodworms?

1. Rehydrate the bloodworms. Soak a few freeze-dried bloodworms in a little distilled water until they soften.
2. Choose a healthy, open trap. Select a small portion of softened bloodworms that fits comfortably inside it. One bloodworm may be enough for a tiny trap; a larger trap can accommodate a few.
3. Encourage the trap to close. Gently place the food inside and touch the trigger hairs with a toothpick or tweezers, taking care not to damage them.
4. Stimulate the digestive response. After the trap closes, gently massage the outside of its lobes for a short time to imitate the movement of live prey. This may help stimulate digestion, although it does not guarantee that the trap will digest the food.
5. Leave the trap alone. Do not try to reopen it. The trap may reopen after several days, sometimes leaving behind dry, undigested remains.

Can I make the traps close just for fun?

Try not to. Closing a trap uses energy, and an empty trap cannot gain nutrients from the effort. Each trap can close only a limited number of times before it stops functioning.

Enjoy feeding your plant occasionally, but let it catch its own insects the rest of the time.

4. Old traps turn black. That’s normal!

Individual traps do not last forever. As they age, they may turn black and die while fresh traps grow from the center of the plant.

You can leave an old trap alone until it is completely black, then carefully trim it away with clean scissors if you prefer a tidier appearance. Avoid cutting healthy green growth.

A few black traps are normal, especially after a change in growing conditions or as winter approaches. However, if most of the plant suddenly blackens during the growing season and no healthy new growth appears, check its light, water, and growing conditions.

5. Winter dormancy: let your flytrap rest

Venus flytraps need a cool winter dormancy period. As the days shorten and temperatures fall, growth slows. Some traps blacken, and the plant may become much smaller or die back close to the soil surface.

This does not necessarily mean your plant has died. Its underground rhizome can remain alive and produce new growth in spring.

In Northern Virginia, flytraps can experience their seasonal changes outdoors, but small nursery pots are more vulnerable to prolonged hard freezes than plants growing in the ground.

For winter care:

• Keep your plant in a cool location where it can experience winter dormancy.
• Protect its pot from prolonged, severe freezing. An unheated shed or garage can provide protection during cold spells, provided the plant does not stay warm enough to resume growth.
• Keep the growing medium damp, not saturated. Do not leave the pot standing in a deep water tray throughout winter.
• Do not feed the plant while it is dormant.

Move the plant back into full outdoor sunshine as temperatures warm and new growth resumes in spring.

6. Repotting and soil

Your House of Carnivores Venus flytrap has recently been up-potted into a 3-inch nursery pot. It does not need repotting when you bring it home and can grow comfortably in this pot until sometime next year.

Choosing a planter for next year

When your flytrap needs more room, choose a plastic pot 4–5 inches wide and about 5 inches deep, with drainage holes. Flytraps have long roots, so depth matters as well as width. Late winter or early spring, before vigorous growth begins, is a good time to repot; there is no need to move it simply because the calendar changes.

For several flytraps or a shared planting with Sarracenia, use a larger container with room for roots, new divisions and future growth. See the mixed-planter dimensions below.

Use an unfertilized, nutrient-poor carnivorous plant medium, such as a suitable peat-and-perlite mix. Avoid ordinary potting soil, compost, fertilizer and materials that leach minerals. Handle the rhizome and roots gently, then water thoroughly with distilled, rain or RO water.

Frequently asked questions

Can I keep my Venus flytrap indoors all year?

An ordinary sunny windowsill is usually insufficient. Strong grow lighting can support indoor growth, but the plant still needs an appropriate winter dormancy period. Outdoors is the simplest choice for most growers.

How often should I feed it?

There is no required schedule for an outdoor flytrap. For an occasional meal, follow the portion and preparation guidance in Feeding your flytrap.

Why didn’t my trap digest the bloodworms?

Unlike live insects, rehydrated bloodworms do not continue moving inside the trap. The trap may close but fail to enter its full digestive response without additional stimulation. Food that is too large can also prevent a good seal.

Try a smaller, thoroughly rehydrated portion next time, and avoid repeatedly experimenting on the same trap. A trap that fails to digest a meal does not necessarily indicate a problem with the whole plant.

Why are my traps turning black?

Age and winter dormancy are common causes. Sudden widespread blackening during active growth warrants a care check; see black traps and trimming.

Can I grow a Venus flytrap and a North American pitcher plant together?

Yes. Venus flytraps and North American pitcher plants (Sarracenia) share the full-sun, wet growing-season and cool winter-dormancy requirements described above. They make good companions in an outdoor bog planter.

Place flytraps where taller pitchers will not shade them. For now, you can arrange the separate nursery pots in a shared shallow water tray, making each plant easy to move individually.

What size planter should I use for a Venus flytrap and a North American pitcher plant?

For a small mixed planting, start with a planter at least 10–12 inches wide and 6–8 inches deep. Use a larger container for multiple plants or a large Sarracenia variety. Leave room for expanding rhizomes and future divisions, and protect the container from prolonged severe freezing during dormancy.

Can I grow a Venus flytrap with a tropical sundew or tropical pitcher plant?

They may have overlapping needs during part of the year, but their long-term care differs. Venus flytraps require winter dormancy, while many tropical sundews and Nepenthes do not. Separate pots make it easier to give each plant the conditions it needs.

More about Venus flytraps

Explore the Venus flytraps Plant Wiki for botanical facts, native habitats and trap biology, or shop available Venus flytraps.

Compare all carnivorous plant care guides to choose the right light, watering method and seasonal routine.

Care references and further reading

For another grower’s guidance on light, water, growing medium and seasonal care, see Sarracenia Northwest’s Venus flytraps growing guide. Requirements vary by species, hybrid and growing conditions.