Data provided by the participants of the Consortium of California Herbaria

View additional distribution information on the Jepson eflora

Mock orange (Philadephus lewisii) is a deciduous shrub covered in a mass of white blossoms at the height of flowering, in spring to summer. Mock orange is widespread but not common, usually appearing as an individual plant in a mix of other species. 

The shrub sends out long stems, which are red when new and fade to gray with age. Its leaves are light green in color with a rough texture, generally turning a lovely yellow in fall.  The large flowers bloom in clusters at the ends of long stems and have a heavy, sweet scent similar to citrus blossom. They are among the most fragrant flowers of any California native plant. It is fast-growing and tolerates almost any soil type, making it a wonderful focal plant in a garden.

Plant type

Shrub

Size

5 - 12 ft Tall
6 ft Wide

Form

Upright, Rounded

Growth rate

Moderate

Dormancy

Winter Deciduous

Fragrance

Pleasant

Calscape icon
Color

Yellow, White

Flowering season

Summer, Spring

Special uses

Hedge

Sun

Full Sun, Partial Shade

Water

Moderate

Summer irrigation

Max 3x / month once established

Ease of care

Easy

Cold tolerance

Tolerates cold to -10° F

Soil drainage

Medium

Soil description

Well-drained soils that are coarse to medium (rich, loamy) textured.
Soil PH: 5.0 - 8.0

Maintenance

Flowers on last year's wood, so prune non-productive or dead wood directly after end of bloom period. Can coppice if plant is quite woody with sparse foliage. This method can significantly improve the appearance of this shrub, but be careful not to cut the roots!

Propagation

Seed, cuttings or root sections. For propagating by seed: 2 to 3 months stratification.

Sunset Zones

1, 2, 3, 4*, 5*, 6*, 7*, 8*, 9*, 10, 14*, 15*, 16*, 17*, 18*, 19*, 20*, 21*, 22*, 23*, 24*

Site type

Rocky slopes, canyons, open areas primarily of mountainous regions between 1000 and 4000 ft as a component of foothill woodland or evergreen forest

Plant communities

Foothill Woodland, Mixed Evergreen Forest, Yellow Pine Forest

Caterpillars
Butterflies

Butterflies and moths supported

0 confirmed and 2 likely

Confirmed Likely

Johnson's Euchlaena

Euchlaena johnsonaria

Eupithecia maestosa