Sonic bloom weigela is an ornamental shrub that is native to Korea. It is a deciduous shrub that typically grows to six feet tall and wide. The leaves are ovate to lanceolate shaped and are dark green in color. The flowers are pink or white and bloom in May to June.
Related plant:
Sonic Bloom Red Weigela
Related plant:
Sonic Bloom Pink Weigela
About soil condition, sonic bloom weigela like a well-drained, fertile soil with a neutral to slightly alkaline pH. They are not overly fussy about soil type but prefer a loamy soil. They will not tolerate wet, heavy, or clay soils. Add organic matter to the planting hole. If you have poor drainage, consider planting on a mound.
Similar to other members of the Weigela family, the Sonic Bloom Weigela requires full sun to partial sun in order to thrive. This means that it should be planted in an area of your yard that gets at least 6 hours of sun per day. However, it can tolerate some afternoon shade, especially in hot summer climates. If you live in an area with hot summers, you might want to plant your Sonic Bloom Weigela in an east-facing location so it can benefit from the morning sun but be protected from the harsh afternoon sun.
The temperature conditions are ideal for the sonic bloom weigela. The plant flourishes in temperatures ranging from 60 to 75 degrees Fahrenheit. It can tolerate periods of cooler temperatures, but will not tolerate freezing conditions. The plant requires full sun to partial shade for optimal growth.
Ideal humidity condition for this plant is 50%-60%. If the humidity is too low, the leaves will lose moisture and turn brown. If the humidity is too high, the plant will be more susceptible to fungal diseases.
About fertilizer, this type of plant doesnt need a lot of fertilizer. In fact, too much fertilizer can actually harm the plant. A light feeding in early spring is all that is needed. As for the roots, they are relatively shallow so be careful when you are watering.
Pruning is an important part of maintaining your sonic bloom weigela. This shrub blooms on new growth, so pruning in the late winter or early spring will encourage more flowers. You can also prune to shape the plant or to control its size.
Propagation of the sonic bloom weigela is best done through softwood or hardwood cuttings. Hardwood cuttings should be taken from the current year's growth and softwood cuttings should be taken from the new growth of the season. The cuttings should be about 6 inches long and should be taken from healthy parts of the plant. The cuttings should be placed in a rooting hormone and then placed in a well-draining soil mix. The cuttings should be kept moist and in a location with bright indirect light. After a few weeks, the cuttings should begin to root and can then be transplanted into individual pots.
Usually, the plant growth rate is rapid during the first growing season after planting. Sonic bloom weigela typically produces full, bushy growth with plenty of new leaves and stems. However, sometimes plants may produce fewer leaves and stems if they are grown in partial shade. Plants grown in full sun usually have the best growth.
Common problems for this kind of plant are powdery mildew, leaf spot, and root rot. Leaf spot is caused by a fungal infection and appears as small, dark spots on the leaves. Powdery mildew is another fungal infection that appears as a white powder on the leaves. Root rot is caused by a waterlogged root system and appears as wilting and yellowing leaves.
Source:
Sonic Bloom! A New Solar-Powered Sculpture - Smithsonian
JC Raulston Arboretum - Our Plants - Weigela florida 'Bokrasopea'
JC Raulston Arboretum - Our Plants - Weigela florida 'Bokrasoph'