Erysimum Rysi Copper Plug Plant - Perennial Wallflower

The budlings of Erysimum 'Rysi Copper' (perennial wallflower) can be planted in pots and containers or directly in the ground in finely prepared and enriched soil. Plant them as soon as possible after receiving them, in September-October. If the planned location is not yet ready or if the conditions are not favorable for planting (heavy rain or overly dry soil), you can let them grow in pots for 4 to 6 weeks. At planting or shortly thereafter, it is absolutely necessary to pinch the tip of the plant between your thumb and index finger to remove the terminal bud and stimulate branching. You can repeat this operation until mid-October to obtain denser bushes.

In pots and containers, use a good, well-draining potting soil for flowering plants (for example, with a lot of bark or perlite) and enriched with slow-release fertilizer. The top of the root ball should be level with the soil. Water generously at planting and during the following weeks, as the budlings can dry out quickly. However, be careful not to overwater! Make sure to use containers with drainage holes and empty the saucer 10 minutes after watering. Remember to water even during winter if it doesn't rain or if the container is placed in a sheltered location. Do not water during freezing periods.

Starting from 3 weeks after planting and until after flowering, apply a liquid fertilizer for flowering plants 1 to 2 times a week with the watering water, even in winter (as long as watering is necessary). The faded spikes can be cut with scissors to maintain a neat appearance of the plant, but this is not essential, as the flowering continues as long as the plant does not lack water. Once the flowering is over, potted plants can be replanted in the garden in full sun after being pruned by about 5cm (2in).