Oenothera lindheimeri 'Whiskers Deep Rose'

Choose a site that mimics the native prairie location in which the plant thrives such as a sunny site with modestly fertile, well-draining soil.

Avoid backfilling with compost (unless the soil is particularly heavy, or poorly drained) as nutrient-rich soil can result in leggy growth and fewer flowers.

Initially, water deeply but infrequently to encourage deep root development, then reduce watering as the plants establish except in prolonged dry spells. A light mulch in spring will help retain moisture and suppress weeds, but keep it away from the crown to avoid stem rot.

As winter approaches, leave the spent foliage in place—it adds architectural interest with its russet tones and helps protect the crown from frost. Adding a thicker, dry mulch layer in the late autumn will offer additional winter protection for this perennial.

In early spring, cut back the plants to about 15cm (6in) from the ground, and divide congested clumps every 3-4 years to maintain their vigour.

Please be aware that purplish-brown spotting can appear on gauras at certain times of the year and/or certain times in the plant's life cycle. This is not a disease but a physiological response to cold temperatures, and occurs when new growth has encountered unseasonably chilly conditions. It will not affect the plant's vigour or flowering potential and will often improve in warmer weather.