Nepeta x faassenii

Deciduous bushy clump-forming perennial that grows to 0.6m high and wide.

Spikes of lavender-blue flowers bloom in summer and early autumn with small aromatic greyish leaves.

Prefers full sun to partial shade and well-draining soil although soil doesn't need to be overly fertile. Plants are drought tolerant once established.

Always choose healthy well grown plants and plant after autumn rains as the soil is moist and warm and allows plants to become established before winter. This enables them to withstand dry periods during the following summer. Young plants require thorough watering during dry periods over the first two or three years mulching helps to conserve moisture and suppress weeds. Planting success is often improved on clay soils by adding extra topsoil and raising beds. Incorporate coarse sand bark compost or other organic material to improve soil structure.

Before planting ensure the root ball is saturated and remove the planter bag or pot with minimal root disturbance. Trim any broken roots and plant at the same level as in the container. Dig a hole twice the diameter of the root ball and firm in and water once planted. Make sure plants are watered well until established if planting in a drier period. Plant with some general slow release fertiliser and then every spring apply an organic based fertiliser such as blood and bone at a handful per square meter as new growth begins.

Apply mulch annually to suppress weeds and conserve moisture. Feed annually in spring with a balanced fertiliser such as blood and bone at a handful per square metre in spring as new growth begins. A good layer of mulch may provide enough nutrients for catmint as they thrive on nutrient deficient soils. Water during dry summer periods to prolong flowering.

Occasionally catmint will require extra support this is best done with help from surrounding plants. Small plant supports can be bought from a local garden centre if needed. Catmint can be cut back by one third partway through summer to encourage a second flush of flowers.

In autumn, like most other perennials, catmint is best to be cut back. Divide and replant if required in autumn also when the soil is moist and warm. Dividing is easy to do lift the whole clump and push two garden forks back to back in the centre of the clump and push apart this should separate the clumps easily. Dividing should be done every two to three years. If left longer the vigour of the plant will start to wane and its flowering may not be as prolific. This means more plants easily and for free. Ensure new divisions are watered regularly until established.

While not as enticing to cats as true catnip, felines may still try to roll on catmints. If there are cats around it's a good idea to protect young plants for a while with a dome made out of chicken wire.

Attracts butterflies and bees.

Ensure plants are well spaced for sufficient air circulation to prevent powdery mildew.

Perennial Garden