Nepeta subsessilis - Catnip

Nepeta subsessilis, catmint, forms a bushy, upright and branching plant with wide light green leaves. The foliage is topped all summer by large light blue flowers. It is a large nepeta that loves moisture and heavy soils. It can be used in the same way as lavender, as edging or in flower beds and large pots.

Nepeta subsessilis belongs to the lamiaceae family. It originates from the slopes of humid mountains in Asia. This perennial forms a dense and bushy clump of at least 1.20m (4ft) high, with a minimum width of 50 cm (20in), spreading rapidly through its rhizomes. It flowers from June to August with bright light blue spikes, 3 cm (1in) long. The nectar-rich flowers attract a large number of bees and butterflies. The foliage is medium green, and the ovate, toothed, smooth leaves are 8 to 10 cm (3 to 4in) long and aromatic. It is one of the tallest species and also one of the most capable of withstanding high atmospheric humidity. Its leaves are attractive to cats.

Nepeta subsessilis is easy to grow, preferring moist, rich soil in a sunny location. It tolerates dry, poor and rocky soils but with less abundant flowering. It is not as drought-resistant as most nepetas but tolerates heavy soils. Nepeta subsessilis can be used as a border plant, on large slopes or in pots. Combine it with tall roses for a romantic atmosphere or with yellow-flowered perennials for a contrasting effect. It also pairs well with lobelias.

Fun fact: Catnip acts as a sort of drug on some cats. They start by looking up and moving their heads before rubbing against the plant for several minutes. The pleasurable reaction stops after 15 minutes and lasts for 2 hours. But don't worry, it will cause no long-term harm.