Catmint (Lemon), Lemon Catnep (Nepeta cataria citriodora).
Growing Lemon Catnip (Nepeta cataria citriodora) from seed is a simple and rewarding process. The best time to sow lemon catnip seeds is in spring, after the last frost date in your area. You can also sow them indoors 6-8 weeks before the last frost date for an earlier start.
To prepare, choose a location with well-draining soil and full sun to partial shade. Fill seedling trays or small pots with a good quality seed starting mix. Sow the seeds in a garden bed by removing weeds and loosening the soil to a depth of about 1/4 inch. For indoor planting, press the seeds lightly into the seed starting mix in the trays or pots and space them about 1 inch apart. Cover the seeds with a fine layer of soil or seed starting mix.
Water the soil gently but thoroughly until it is moist, not soggy, during germination. For optimal germination, maintain a temperature of 65-70°F (18-21°C). If starting indoors, use a seedling heat mat or place the trays on a warm windowsill.
Germination typically takes 10-20 days, and ensure the seedlings get plenty of light. Thin the seedlings to 12-18 inches apart if planted directly outdoors, and transplant them to larger pots or into the garden when they have at least two sets of true leaves.
Care for the lemon catnip: Water regularly, feed with a balanced organic fertilizer once a month, pinch back the plants when they are young to encourage bushier growth, and deadhead the spent flowers to promote continuous blooming.
Pest and disease management is essential for the successful growth of the lemon catnip from seed. Gradually acclimate the seeds to outdoor conditions before transplanting, and apply a thin layer of mulch around the plants to retain moisture and suppress weeds.