Philadelphus virginal is a plant that is native to North America. It is a deciduous shrub that can grow up to 8 feet tall. The leaves are ovate shaped and have a toothed margin. The flowers are white and have a diameter of about 1 inch. The blooming period is from June to July.
Related plant:
Philadelphus Coronarius Aureus
Related plant:
Philadelphus Belle Etoile
About soil condition, philadelphus virginal grows best in moist to wet soil, with good drainage. It also prefer full sun to part shade location. It is not advisable to plant this tree in dry, sandy soil.
Like the other Philadelphus varieties, Virgin prefers full sun to part shade and soil that is moist but well-drained. It is a somewhat fragile shrub and should be protected from strong winds. It blooms on old wood, so prune immediately after flowering.
The temperature condition of Philadelphus virginal is that it prefers full sun to partial shade and soil that is moist but well-drained. It is a plant that is native to Missouri and can be found in woodlands, fields, and along roadsides. The plant will tolerates a wide range of soil conditions, but it prefers rich, loamy soil that is high in organic matter. It can also tolerate some drought once it is established.
Ideal humidity condition for this plant is 50% and above. Any lower and the leaves will start to droop and the plant will become stressed. Philadelphus Virginalis is a hardy shrub, however, and will bounce back quickly when provided with the correct conditions.
Regarding fertilizer, this plant is not very demanding. A little bit of compost dug into the soil before planting is adequate. Once established, a light annual application of compost or composted manure is all that is needed to keep it looking its best. As for the roots, they are relatively shallow and don't need a lot of room to spread out. Just be sure to water it regularly during the first few growing seasons to help get it established.
Pruning philadelphus virginal is important to maintain the plant's shape and prevent it from becoming overgrown. When pruning, be sure to remove any dead or diseased branches, as well as any branches that are growing in an undesirable direction. It is also important to thin out the plant to allow for adequate airflow and prevent the plant from becoming too dense.
Propagation for Philadelphus virginal is best done through stem cuttings taken from new growth in late spring or early summer. Cuttings should be about 6 inches long and taken from the tips of the stems. After taking the cuttings, strip off the lower leaves and dip the cut end in rooting hormone. Place the cuttings in a pot filled with moistened potting mix and place in a bright, indirect light location. Keep the soil moist but not soggy and in 4-6 weeks the cuttings should have rooted and new growth will be visible.
Usually, the plant growth rate studies have been conducted in controlled environment chambers with idealized nutrient solutions. While these studies have found that the average philadelphus virginal growth rate is between 1 and 2 cm/day, it is likely that the growth rate is slower in the field.
Common problems for this kind of plant are bacterial leaf spots, powdery mildew, and root rot. These problems are most likely to occur when the plant is grown in too much shade, with too little air circulation, or in excessively moist conditions. To avoid these problems, make sure to plant philadelphus virginal in an area that receives full sun and has good air circulation. If you live in an area with high humidity, make sure to water the plant only when the soil is dry to the touch.
Source:
Philadelphus coronarius - University of Connecticut
The Best Philadelphus - Harvard University
Species Descriptions - Burke Herbarium Image Collection
