Syringa charles joly is one of the oldest and most popular lilac shrubs. It is a vigorous grower that can reach heights of up to 20 feet. The shrub is covered in dark green foliage and produces an abundance of large, fragrant, lilac-purple flowers in late spring.
Related plant:
Syringa Vulgaris Mme Lemoine
Related plant:
Syringa Patula Miss Kim
About soil condition, Syringa charles joly can grow in well-drained, sandy or gravelly loams in full sun. It is somewhat tolerant of drought once established. This plant prefers a neutral to slightly alkaline soil but will tolerate mildly acidic soils.
So, like the other lilac varieties, the Syringa charles joly requires full sun to produce the most flowers. It is a fast-growing shrub that can reach up to 10 feet tall and 8 feet wide. The flowers are a deep purple color and have a strong fragrance. This shrub is a good choice for hedges, screens, or as a specimen plant.
The temperature condition that is ideal for the Syringa Charles Joly is a temperature that is cool and moist. This means that the plant will do best in an environment where the temperature is below 70 degrees Fahrenheit and the humidity is high. If the temperature gets too hot or too cold, the plant will not be able to thrive.
Ideal humidity condition for this plant is 50% and above. Below this, the plant will experience some problems. The leaves will start to turn yellow and drop off. The flowers will also start to wilt and the plant will become more susceptible to diseases.
Mentioning fertilizer, this kind of plant doesn't need too much and using too much can actually damage the roots. A simple time release fertilizer in the spring is all that's really needed. As for the roots, they are very resilient and can even bounce back after being transplanted.
Pruning syringa charles joly is important to maintaining the health and shape of the plant. It is best to prune in late winter or early spring, before new growth begins. Cut back any dead or damaged branches, and remove any suckers that are growing from the base of the plant. Cut back the main branches by one-third to promote new growth.
Propagation of syringa charles joly is best done through softwood cuttings taken in late spring or early summer. The cuttings should be taken from new growth that is just beginning to harden off. Cuttings should be 4-6 inches long and should have a heel if possible. Cuttings should be taken from the bottom of the plant up to encourage new growth. Put the cuttings in a plastic bag with moistened peat moss and perlite or sand and keep them in a shady spot until roots have formed and the cuttings are ready to be potted up.
Usually, the plant growth rate is about 3 to 5 feet per year. However, there are syringa charles joly that have been known to grow up to 10 feet in a single year. The size of a syringa charles joly depends on the species. There are dwarf varieties that only grow to about 2 feet tall and standard varieties that can reach up to 6 feet tall.
Common problems for this kind of plant are stem canker, powdery mildew, and root rot. Stem canker is a disease that attacks the stem of the plant, causing it to weaken and eventually die. Powdery mildew is a fungal disease that covers the leaves of the plant in a white powdery substance. Root rot is a disease that attacks the roots of the plant, causing them to rot and eventually die.
Source:
Syringa vulgaris - North Carolina State University
Syringa × chinensis | Landscape Plants | Oregon State University
Syringa × persica | Landscape Plants | Oregon State University
