Spirea bumalda is a beautiful shrub that is perfect for adding a splash of color to any landscape. This shrub is covered in small, pink flowers that bloom in the spring and summer. The foliage is dark green and the shrub can reach up to 6 feet tall.
Related plant:
Spirea Japonica Anthony Waterer
Related plant:
Spirea Thunbergii
About soil condition, Spirea bumalda can grow in any type of soil as long as it is well drained. It prefers a slightly acidic to neutral soil with a pH of 6.0 to 7.5. It is not tolerant of wet or heavy soils.
Just like other Spirea shrubs, the Spirea bumalda prefers full sun to partial sun locations in the garden. 6 to 8 hours of sunlight a day is ideal, but it will still do well with as little as 4 hours of sunlight. This shrub can also tolerate some shade, but it may not flower as profusely.
The temperature condition that is best for spirea bumalda is a cool to cold climate. This plant is native to China, Japan, and Korea and thrives in areas that experience cool to cold weather conditions for a good portion of the year. These areas typically have average winter temperatures of -15 to -10 degrees Celsius and average summer temperatures of 20 to 25 degrees Celsius. This plant prefers full sun to partial shade and moist, well-drained soils.
Ideal humidity condition for this plant is between 40 and 60%. If the humidity is too high, the leaves of the plant will start to turn yellow and fall off. If the humidity is too low, the leaves will become dry and brittle.
Regarding fertilizer, this kind of plant doesn't need a lot. In fact, too much nitrogen will result in fewer flowers. A light application of a balanced fertilizer in early spring is all that's needed. Spirea bumalda has a shallow root system, so be careful not to damage the roots when working in the area.
Pruning spirea bumalda is a simple task that can be done in late winter or early spring. This shrub blooms on new wood, so pruning it will encourage more growth and more flowers. To prune, simply remove any dead, diseased, or damaged branches. Then, cut back any long or leggy branches to encourage a more compact shrub.
Propagation of spirea bumalda is typically done through softwood or hardwood cuttings taken from the new growth of the season. The cuttings should be taken from healthy, non-flowering stems and should be 4-6 inches in length. The cuttings should be placed in a well-drained potting mix and kept moist until rooted. Once rooted, the spirea can be transplanted into its permanent location.
Usually, the plant growth rate is fast, with a typicalstem elongation rate of around 3.5 inches (9 cm) per year. However, there can be considerable variation in growth rate between different cultivars and even between different plants of the same cultivar. A few factors that can affect growth rate include plant nutrition, water availability, and temperatures during the growing season.
Common problems for this kind of plant are aphids, caterpillars, and slugs. If you notice any of these pests on your plant, you should take immediate action to remove them. You can do this by hand or with a pesticide. Be sure to follow the instructions on the pesticide label.
Source:
UNF - UNF Landscape - Spirea x bumalda - Bumalds spirea
Bumald Spirea (Spiraea x bumalda)
Species: Spiraea x bumalda - woodyplants.cals.cornell.edu