Copper bush is an ornamental plant that is part of the mint family. It is native to southern Africa and has been introduced to other parts of the world. The plant has square stems and opposite, ovate leaves. The flowers are tubular and typically copper-colored, hence the plant's common name.
Related plant:
Coppertop Viburnum
About soil condition, the copper bush needs well-drained soil, so make sure your pot has a drainage hole. If you're growing copper bush indoors, use a potting mix formulated for cacti and succulents. If you're growing it outdoors, choose a sandy spot in full sun. Amend heavy clay or compacted soils with grit or perlite to improve drainage.
Not too different with other plants, copper bushes need sun to grow. They need at least six hours of sunlight each day to thrive. If they don't get enough sun, they will start to yellow and their growth will be stunted. When choosing a spot to plant your copper bush, make sure it gets plenty of sunlight.
The temperature at which a copper bush can be used safely is generally dependent on the application. For example, if the bush is being used in a high temperature application, it is likely that a different grade of copper will be required than if it was being used in a low temperature application. However, as a general rule, copper bushes can be used safely up to temperatures of approximately 200°C. Beyond this, the properties of the copper begin to change and it can become brittle, meaning that it is no longer suitable for use.
Ideal humidity condition for this plant is 60-70%. The plant grows best in a well-drained soil with a neutral to slightly acidic pH level. It does not tolerate wet or soggy conditions. If the soil is too sandy, add organic matter to improve drainage. If the soil is too clay-like, amendment with organic matter will improve aeration. This plant is drought tolerant but looks best with moderate water.
Mentioning fertilizer, this plant requires little attention in terms of feeding. An all-purpose fertilizer will suffice if applied once a month. However, if you see the leaves turning pale, that is a signal that the plant needs more nitrogen, and you should opt for a nitrogen-rich fertilizer. The root system of the copper bush is quite sturdy and fibrous. It does not require much in terms of support and is known to resist drought very well.
Pruning is an important part of plant maintenance. It helps to encourage new growth, remove dead or damaged leaves and branches, and improve the overall appearance of the plant. Copper bush is no exception. Regular pruning will help to keep your copper bush healthy and looking its best.
Propagation of copper bush is by seed, cuttings, or layering. Seed can be sown in spring or fall in a sheltered location. Cuttings can be taken in summer or fall. Layering can be done in spring or summer.
Usually, the plant growth rate studies have found that plants grow faster when they are exposed to copper. However, it is still unclear exactly how much copper is needed for optimal growth. In one study, plants grew best when they were exposed to copper levels between 2 and 20 parts per million (ppm).
Common problems for this kind of plant are root and stem problems. The most common root problem is called "root rot." This is when the roots of the plant start to decay. The most common stem problem is called "stem rot." This is when the stems of the plant start to decay.
Source:
Acalypha wilkesiana (Cooperleaf, Copperleaf, Copper Plant,
Copper for crop production | UMN Extension
The Facts on Copper | Dartmouth Toxic Metals
