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How to Take Care of Mock Orange Shrubs

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How to Take Care of Mock Orange Shrubs

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Overview

Mock orange plants (Philadelphus coronarius) are deciduous, flowering shrubs. Desirable for their fragrant, creamy-white flowers that mimic those of orange trees, these shrubs are a good choice for home gardeners who want a hardy, spring-blooming shrub. Mock orange shrubs can grow to an average height of 10 feet, according to the University of Illinois, and have a rounded, arching shape. They grow best in United States Department of Agriculture (UDSA) plant hardiness zones 4 through 8.

Step 1

Expose your mock orange shrub to plenty of sunlight. It's the blooms that make this plant special. Without at least six hours of sun exposure per day, the plant will not bloom well, according to the University of Connecticut.

Step 2

Add rich, organic material to the soil around your mock orange shrub. A thick layer (3 to 4 inches) of mulch consisting of leaf mold or compost will add nutrients to the soil and keep it moist. Extend the mulch to the edges of the shrub's canopy.

Step 3

Water enough so that the soil is continually moist, but never soggy. Too much water in the soil can lead to root rot, which is a fungal disease that destroys the roots of the plant. Although they are tolerant of drought conditions, mock oranges grow best in moist, well-draining soil, according to the University of North Carolina.

Step 4

Fertilize sparingly. The roots of these plants are sensitive to fertilizer burn. A mulch will add plenty of nutrients. Only fertilize in early spring if the plant has yellow leaves, which is a symptom of nutrient deficiency. Use a balanced (10-10-10) fertilizer and follow the directions on the label for application according to the size of your mock orange shrub.

Step 5

Prune every year after the shrub flowers. Mock oranges can get "leggy" with age, which means they spread out in a rather loose, messy shape. Prune the shrub back by a third early each summer, after the flowers have faded.

Things You'll Need

  • Organic mulch
  • Balanced (10-10-10) fertilizer
  • Pruning tools

References

  • University of Illinois: Sweet Mockorange (Philadelphus coronarius)
  • University of Connecticut: Philadelphus Coronarius
  • University of North Carolina: Philadelphus Coronarius

Who Can Help

  • North Dakota State University: Questions on Mock Orange
  • National Arboretum: USDA Plant Hardiness Zone Map
Keywords: grow sweet mockorange, mock orange shrub, Philadelphus coronarius care

About this Author

April Sanders has been a professional writer since 1998. Previously, she worked as an educator and currently writes academic research content for EBSCO publishing and elementary reading curriculum for Compass Publishing. She holds a Bachelor of Arts in social psychology from the University of Washington and a master's degree in information sciences and technology in education from Mansfield University.

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