Catmint (Catnip, Catnep) (Nepeta cataria).

Growing catnip (Nepeta cataria) from seed is a simple process that can be done indoors or outdoors. The steps include starting seeds indoors 6-8 weeks before the last expected frost date, filling small pots or seed trays with a well-draining seed starting mix, sowing seeds, watering, and placing the containers in a warm spot with temperatures between 65-70°F (18-21°C). Provide bright, indirect light for germination, and thin the seedlings to avoid overcrowding.

When the plants are about 4-6 inches (10-15 cm) tall and the last frost has passed, harden them off by gradually exposing them to outdoor conditions over a week. Transplant them into a garden or larger pots, spacing them 12-18 inches (30-45 cm) apart.

For outdoor growing, prepare the soil with well-draining soil that gets full sun or partial shade. Sow seeds directly into the prepared soil after the last expected frost, planting them 12-18 inches (30-45 cm) apart in rows. Water the soil gently but not overwater, and thin the seedlings once they have two sets of true leaves. Weed the area around the young plants to reduce competition for nutrients.

General care for catnip plants includes regular watering, using a balanced, organic fertilizer at planting time and once during the growing season, pinching back the tips of the plants to encourage bushier growth and delay flowering, and being aware of pests like aphids, spider mites, and powdery mildew. Pinch off small white, pink, or lavender flowers to encourage leaf growth, which cats typically enjoy. If collecting seeds for future planting, allow some flowers to mature and dry on the plant.

With the right conditions and care, catnip plants should be ready for your cat to enjoy in about 8-10 weeks from the time of planting.

Further information.

Catnip, also known as Nepeta cataria, is a member of the mint family and has been used for medicinal, culinary, and recreational purposes for cats. Its medicinal properties include treating ailments like fevers, colds, insomnia, and digestive issues in humans. Its scent repels insects, making it a popular choice for gardeners. Catnip leaves are edible and have a minty flavor, making them suitable for cooking. The leaves and flowers are used to make calming teas and tisanes, known for their sedative and antispasmodic properties. The active ingredient, nepetalactone, induces a playful reaction in cats, making it a common ingredient in cat toys and treats. To sow and grow catnip, plant seeds in warm, well-drained soil in spring or early summer. Sow seeds in loose, well-drained soil, water regularly, and prune the plant to encourage growth. Catnip is also used in cat toys, herbal teas, and herbal remedies.