Common, Catnip Seed

Common Catnip Seed

Classic catnip combines feline appeal with hardy perennial growth
Gray-green heart-shaped leaves carry strong mint-family fragrance
Adaptable plants thrive with minimal care
Harvest leafy stems before flowering for strongest aroma

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Key Attributes

Botanical Name

Nepeta cataria

Days to maturity

75 Days

Sun

Full Sun

Packet

500 Seeds

Zones 3–9 Check your growing zone

About Common, Catnip Seed, Catnip Seed

Catnip seeds grow into Nepeta cataria, a hardy perennial herb in the mint family that has been cultivated in Europe since ancient times and brought to North America by early settlers. Known for its gray-green, heart-shaped leaves and small clusters of lavender-white flowers, catnip thrives in full sun and well-drained soil, often self-seeding and spreading easily once established.

Growing details

Planting

Sow Depth

1/16"

Days to Germination

7–14 days

In-row plant spacing

18"

Plant profile

Life Cycle

Biennial

Plant Height

30 inches

Growth Habits

Clumping, Upright, Spreading

Seed & variety

Seeds Per Ounce

48,450

Color

Green

Seed Type

Open Pollinated

Before Planting

Catnip benefits from a full-sun to lightly shaded site with fertile, well-drained soil that retains moderate moisture. Work compost into the bed and prepare a fine, weed-free surface for the usually small seed. Plan convenient irrigation, and use containers or barriers before planting if catnip may spread aggressively.

Planting

Sow catnip indoors several weeks before the last frost or direct sow when the crop’s preferred soil temperature is reached. Maintain even surface moisture through germination, especially for fine or slow seed. Give indoor seedlings strong light, harden them before transplanting, and thin direct-sown plants after true leaves appear. Repeat sowings where young leaves are harvested continuously.

Watering

Catnip grows best with even moisture. Water deeply during dry periods, allowing only slight surface drying between applications, and ensure containers or beds drain freely.

Fertilizer

Catnip benefits from moderate feeding when repeatedly harvested. Apply diluted balanced fertilizer or compost between cuttings, following label rates and avoiding soluble-salt buildup.

Harvesting

Clip catnip during the cool morning when foliage is dry and aromatic oils are concentrated. Harvest leaves before full bloom, leaving enough healthy growth for the plant to recover.

Tips

Catnip can spread aggressively by roots or seed. Confine it to a dedicated bed, deadhead before seeds mature, and remove wandering shoots before they become established.

Pests & Diseases

Powdery mildew, rust, leaf spots, and root rot occasionally affect catnip. Orange pustules identify rust; discard heavily infected stems rather than drying them for use. Cut plants back when foliage becomes crowded, keep volunteer seedlings from forming dense mats, and avoid replanting into soil where roots repeatedly rot.

Monitor catnip for aphids, mites, whiteflies, leafminers, and slugs. Remove badly infested stems, maintain weed control, and select treatments labeled for edible herbs when intervention is necessary.