Would you like to plant blue rue in your garden? No problem, because we will explain to you here how you have to proceed and what you should consider when caring for it.
The robust blue rhombus, which looks like lavender, begins to unfold its purple flowers from mid-July, with the flowering phase extending into October. The reason why the blue rhombus is so extremely popular with many garden lovers.
In addition, there is an aromatic scent that it exudes in all directions, which is why the blue rue, often referred to as the silver bush, is ideal for planting in scented gardens, but also in Mediterranean gardens or rock gardens. However, we will explain to you in more detail here what you need to consider when planting and how the care of the blue rhombus looks like.
Selection of location & planting
Blue diamonds love the sun and drought, which you must take into account when choosing a location. Ideally, you should therefore always choose a site facing south. If you then plant e.g. a butterfly bush, lavender, blue fescue (silver grass variety), mallow and similar perennials or shrubs in the vicinity of the blue rhombus, then the result is a harmonious look that is particularly popular with butterflies and beneficial insects.
» Tip:
The blue diamonds, which grow up to 1 meter high, are also suitable for planting in containers. In the tub, however, only water the blue rhombus moderately when it is dry.
Proper care for blue diamonds
Pruning:
It is important that you radically cut back the blue rue, which is also often referred to as Russian sage, year after year in early spring so that it sprout fully again and unfolds its true splendour. You should also remove any shoots that have already died from the frost.
Warning:
Pruning should never be done in autumn, because this is the only way the blue rue can protect itself from the numerous frosts in the winter months.
Hibernate:
You can support the winter protection by piling leaves on the plant or by covering it with somethingTwigs.
Fertilize/Water:
Furthermore, blue rue should not be fertilized, especially since they clearly prefer nutrient-poor soils. Fertilization would have a detrimental effect on plant growth and flowering. The same applies to watering, since blue rhombus can even survive for several days without water.
Increase:
You can propagate the blue rhombus easily by dividing it, whereby we recommend transplanting it either in spring (after the ice saints) or immediately after flowering. (Link tip: Propagating plants - 4 techniques)
Keep perennial in shape:
The gray-silver colored perennial grows quite loosely with its violet flowers, but the individual branches always grow straight up. If you want to keep the perennial more compact, you should wrap it relatively loosely with raffia so as not to restrict its natural beauty too much.
» Tip:
Individual branches of the blue rue are also ideal for making flower arrangements - which can even be used to create bouquets!