Erysimum hieraciifolium aka European Wallflower

European Wallflower should be watered regularly, allowing the soil to dry out between waterings.

European Wallflower requires special care to keep it thriving. Its sensitivity to dry soil means that you need to be especially careful when it comes to selecting the right potting soil. Look for a soil that will retain moisture, but is also well-draining. A good potting soil should have plenty of organic material, such as coco coir or sphagnum moss, which will help to keep the soil moist and provide extra nutrition for your plant. When planting your Grey Rocket, make sure to mix the soil with some compost or manure to give it an extra boost of nutrients. Additionally, you should water your plant often to ensure that the soil remains moist. With the right care and attention, your European Wallflower will bloom beautifully in your home.

To ensure optimal growth, the European Wallflower prefers bright diffused light for 6-8 hours each day. Insufficient light can result in slow growth and leaf drop, so it's important to find a well-lit location for this plant. Place it near a window, within a distance of 1 meter (3 feet), to enhance its potential for thriving.

The toxicity level of this plant has not been officially confirmed by Ploi. If there is a possibility of ingestion of plant material with an uncertain toxicity by you, a family member, or a pet, it is advisable to seek the assistance of a medical professional.

Repotting the European Wallflower is necessary either when it has doubled in size or once every year, whichever happens first. With fresh potting soil replenished annually, the plant will receive all the necessary nutrients, rendering the use of fertilizer unnecessary. Keep in mind that the source of a plant's energy is the sun, not fertilizer.

European Wallflower’s native range is Central and northern Europe to eastern Asia in Siberia, the Himalayas, China and Mongolia.