North America Native Plant

Gattinger’s Mock Orange

Botanical name: Philadelphus gattingeri

USDA symbol: PHGA

Life cycle: perennial

Habit: shrub

Native status: Native to the lower 48 states  

Gattinger’s Mock Orange: Tennessee’s Fragrant Native Treasure If you’re looking for a native shrub that brings both beauty and ecological value to your Tennessee garden, meet Gattinger’s mock orange (Philadelphus gattingeri). This delightful native plant is a true Tennessee original – found nowhere else in the world! While it might ...

Gattinger’s Mock Orange: Tennessee’s Fragrant Native Treasure

If you’re looking for a native shrub that brings both beauty and ecological value to your Tennessee garden, meet Gattinger’s mock orange (Philadelphus gattingeri). This delightful native plant is a true Tennessee original – found nowhere else in the world! While it might not be as well-known as its more common cousins, this fragrant flowering shrub deserves a spot in every native plant enthusiast’s heart.

What Makes Gattinger’s Mock Orange Special?

Gattinger’s mock orange is a perennial, multi-stemmed woody shrub that typically grows 8-16 feet tall, though it can occasionally reach up to 16 feet under ideal conditions. This deciduous beauty produces clusters of gorgeous white, four-petaled flowers in late spring and early summer that fill the air with an intoxicating fragrance. The ovate leaves provide a lovely green backdrop during the growing season before dropping in fall.

What truly sets this plant apart is its exclusivity – Philadelphus gattingeri is endemic to Tennessee, making it a special treasure for Volunteer State gardeners who want to showcase their region’s unique botanical heritage.

Where Does It Grow Naturally?

This Tennessee native has adapted to thrive in the state’s distinctive limestone areas and cedar glades. You’ll find it growing wild in these specialized habitats, where it has learned to love alkaline soils and can handle both drought conditions and competition from other native plants.

Why Plant Gattinger’s Mock Orange?

There are plenty of reasons to fall in love with this native shrub:

  • Supports local wildlife: The fragrant flowers attract bees, butterflies, and other important pollinators
  • Low maintenance: Once established, it’s quite drought tolerant and requires minimal care
  • Unique heritage: You’ll be growing something that exists nowhere else on Earth
  • Seasonal interest: Beautiful spring flowers and attractive form year-round
  • Adaptable: Tolerates poor soils and various light conditions

Perfect Garden Settings

Gattinger’s mock orange shines in several garden situations:

  • Native plant gardens where you want to showcase Tennessee’s botanical diversity
  • Woodland edges and naturalized areas
  • Gardens with alkaline or limestone-based soils
  • As a specimen shrub where its fragrance can be appreciated
  • Mixed shrub borders with other native plants

Growing Conditions and Care

The good news is that Gattinger’s mock orange is pretty easygoing once you understand its preferences:

Hardiness: Thrives in USDA zones 5-8, making it perfect for Tennessee’s climate

Light: Performs well in full sun to partial shade, though flowering may be best with more sun

Soil: Loves well-drained, alkaline soils but adapts to various soil types. If you have acidic soil, consider adding lime to sweeten it up

Water: Drought tolerant once established, but appreciates regular water during its first growing season

Planting and Care Tips

Getting your Gattinger’s mock orange off to a great start is straightforward:

  • Timing: Plant in spring or fall when temperatures are moderate
  • Spacing: Give it room to spread – plant at least 6-8 feet from other shrubs
  • Watering: Water regularly the first year, then let nature take over
  • Pruning: Prune immediately after flowering if needed – avoid late-season pruning as it sets buds for next year’s flowers
  • Fertilizing: Generally unnecessary in decent soil, but a light application of compost in spring won’t hurt

A Word About Sourcing

Since Gattinger’s mock orange is found only in Tennessee, finding plants or seeds may require some detective work. Look for native plant sales, specialty nurseries that focus on southeastern natives, or connect with local native plant societies. Always ensure you’re purchasing from reputable sources that propagate their plants responsibly rather than collecting from wild populations.

The Bottom Line

Gattinger’s mock orange offers Tennessee gardeners a unique opportunity to grow something truly special – a plant that calls only their state home. With its fragrant flowers, pollinator appeal, and low-maintenance nature, it’s a wonderful addition to native gardens and naturalized landscapes. Plus, you’ll have bragging rights for growing one of the world’s rarest mock oranges right in your backyard!

Gattinger’s Mock Orange

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Rosidae

Order

Rosales

Family

Hydrangeaceae Dumort. - Hydrangea family

Genus

Philadelphus L. - mock orange

Species

Philadelphus gattingeri Hu - Gattinger's mock orange

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA