How to Fertilize Philadelphus insignis?
Balanced shrub feed once in spring

Philadelphus insignis · Philadelphus insignis
Grow in moist, well drained soil in sun to partial shade. Plant bare root plants in winter when the ground is not frozen or waterlogged. Incorporate lots of well-rotted manure or garden compost to improve the soil and water in well. Mulch in spring
Balanced shrub feed once in spring