The varieties illustrated all have single flowers, but ever popular in Philadelphus are the varieties with semi and double flowers. Philadelphus is happy to grow in most conditions with a preference for sun or partial sun.
Philadelphus will grow on all types of soil, clay, chalk, sandy, and will thrive on any PH in the soil, and in any position, sheltered or exposed. Philadelphus is a shrub you can plant wherever you like and it will thrive. The only conditions to cause Philadelphus problems (in common with many plants and shrubs,) is boggy, wet, and poorly drained soil.