How to Grow Catnip

Nov 02, 2026by David Schulze

Catnip is more than a treat for curious cats. This easygoing herb has fragrant foliage, small flowers that attract visiting bees and a place in garden beds or containers. Grow it from seed, give it good drainage and harvest the leafy stems for drying.

Whether you are planting a dedicated herb bed or a pot on the patio, a little planning helps keep catnip productive and prevents it from appearing where you do not want it.

What Is Catnip?

Catnip, Nepeta cataria, is a member of the mint family. It has branching stems, soft gray-green leaves with toothed edges and small whitish flowers, often marked with pale purple spots. It is generally grown as a perennial where winter conditions allow, though individual plants can be short-lived.

Catnip is related to ornamental catmints, but the names are not interchangeable. If you want the familiar herb associated with cats, look for Nepeta cataria. Mature height and spread vary with growing conditions; check your seed packet when planning space.

When to Plant Catnip

Spring is a practical starting point in many areas. Sow outdoors when the soil can be worked and conditions support germination, or start seeds indoors several weeks before your intended transplanting date. Protect tender indoor-grown seedlings from frost and introduce them gradually to outdoor conditions.

In Texas, timing depends on your region and local weather. Establish plants during milder spring weather rather than setting tender seedlings out just before intense summer heat. Fall planting can also work in areas with enough mild weather for plants to establish before freezing conditions arrive. Texas summers can be demanding, so provide consistent establishment care and consider afternoon shade in the hottest locations.

Choose the Right Location

Light: Catnip grows well in full sun. In very hot climates, a site with morning sun and some afternoon shade can help reduce stress.
Drainage: Choose soil that drains freely. Avoid low spots where water stands after rain.
Soil: Ordinary garden soil with a modest amount of finished compost is usually sufficient. Heavy feeding is generally unnecessary.
Access: Place plants where you can easily harvest and trim them. Curious cats may roll on young plants, so plan protection if needed.

How to Start Catnip from Seed

Prepare a fine seedbed. For indoor starting, use clean containers with drainage and a seed-starting mix. Moisten the mix before sowing.
Sow shallowly. Press the small seeds into the surface and cover only lightly, following your packet's depth instructions. Deep planting can make emergence difficult.
Keep moisture steady. Mist or water gently so seeds are not washed away. The growing medium should stay moist, not soggy.
Allow time. Germination can be uneven and may take several weeks. Check moisture and temperature rather than assuming a slow tray has failed.
Provide strong light. Once seedlings emerge, give them bright growing conditions and good airflow.
Thin and transplant. Move seedlings when they are sturdy enough to handle. Many plantings need roughly 18 to 24 inches between mature plants, but follow the spacing on your packet.

Some catnip seed lots benefit from a period of moist chilling. Follow the instructions supplied with your seed rather than assuming every lot needs the same pretreatment. Do not routinely scarify or soak seeds unless the packet specifically recommends it.

Growing Catnip in Containers

A container is a convenient choice when you want catnip near the house or prefer to control its placement. Choose a sturdy pot with drainage holes and enough room for the mature plant. Fill it with potting mix rather than heavy garden soil.

Check container moisture frequently in hot or windy weather. Water thoroughly when needed, then allow excess water to drain. Do not leave the pot sitting in a saucer of water. A container helps define the growing area, but it does not stop seeds from scattering if flowers mature.

Watering and Feeding

Water young plants regularly until they establish. Older plants tolerate some dry conditions, but prolonged drought can reduce leafy growth and cause wilting. Check the soil before watering; a wilted plant in wet soil needs a drainage check, not another drink.

In Texas summer heat, water at soil level and monitor pots closely. A light mulch can help moderate moisture in garden beds, but keep it away from the crown. Do not compensate for heat stress with heavy fertilizer. If feeding is needed, follow the fertilizer label and avoid excess nitrogen.

Pruning, Flowers and Unwanted Seedlings

Pinch or trim growing tips to encourage branching. When plants become leggy or finish a flush of flowers, cut stems back to healthy leafy growth. Avoid cutting a stressed plant down to bare stems during extreme heat.

Let some flowers remain if you want bees to visit, but remove spent flower stems before seeds mature if you want fewer volunteers. Catnip can self-sow readily in suitable conditions. Pull unwanted seedlings early and check nearby beds, paths and containers.

Protecting Catnip from Cats

Some cats rub against catnip, chew the leaves or roll over the plants. Others show little interest. A cat's response varies, and young kittens may not react like adult cats.

Protect small plants with a securely supported wire guard that leaves plenty of room for growth. Avoid sharp exposed wire ends and loose netting that could entangle an animal. A few protected plants can give you a harvest even if one unprotected plant becomes the neighborhood favorite.

Harvesting Catnip

Harvest healthy leafy stems once plants are well established. Choose a dry morning after dew has evaporated. Many gardeners harvest just before or around the start of flowering, while the plants still have plenty of good foliage.

Use clean scissors or pruners and leave enough leafy growth for recovery. Take smaller harvests from young plants and from plants coping with heat or drought. Do not strip a struggling plant simply because the calendar says it is harvest time.

How to Dry and Store Catnip

Sort the harvest. Remove damaged, diseased or dirty material. If you rinse it, remove surface moisture before drying.
Dry with airflow. Spread stems or leaves in a thin layer on a clean screen, or hang small loose bundles in a dry, shaded, well-ventilated place.
Wait until fully dry. Leaves should crumble readily. Check thicker stems and crowded bundles carefully because they dry more slowly.
Store and label. Put thoroughly dry material in a clean, airtight container away from heat, moisture and direct sunlight. Label it with the plant name and harvest date.

Keep drying herbs out of reach of pets. Discard any material that develops mold, dampness or an unusual smell.

Using Catnip Thoughtfully

Dried leaves are often used in cat toys or offered in small amounts as enrichment. Catnip is not a substitute for veterinary care. Too much can cause digestive upset, so supervise your cat's response and ask your veterinarian about use if your pet has a health condition. Keep string, loose stuffing and damaged toys away from pets.

Catnip also has a history of traditional herbal use, but this growing guide does not recommend it as a treatment or provide a human medicinal dose. Garden-grown herbs should not be assumed safe for every person or situation.

Planting seeds are intended for sowing, not for feeding to pets or using in food or drinks.

Common Growing Problems

Slow germination: Review the packet instructions, planting depth and moisture. Give the seeds adequate time before resowing.
Weak, stretched seedlings: Improve light and avoid overcrowding.
Yellow leaves or a declining crown: Check for wet soil and poor drainage before adding water or fertilizer.
Aphids or mites: Inspect leaves and tender stems regularly. Small infestations may be reduced with a gentle water spray.
Summer decline: Check root-zone moisture and heat exposure. Afternoon shade and careful watering may help, but avoid repeatedly soaking the soil.

If you use a pest-control product, confirm that the label allows use on the herb for its intended purpose, including any pet exposure. Follow all directions and avoid spraying open flowers while bees are visiting.

Frequently Asked Questions

Will catnip return next year?

It can return as a perennial where the roots survive winter and drainage is suitable. New volunteer seedlings may also appear. Neither is guaranteed in every location.

Does every cat respond to catnip?

No. Sensitivity varies between cats, so a lack of interest does not mean your plant is the wrong herb.

Will catnip take over my garden?

It can spread through self-sowing. Remove spent flowers before seeds mature and pull unwanted seedlings. Containers alone do not prevent seed dispersal.