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Longleaf phlox is common in the mountain big sagebrush steppe along Reservoir Creek Road, west of Bannack, Beaverhead County, Montana. An abundance of subshrubby species is an indication of sagebrush steppe in good ecological condition. Phl

Photo: Matt Lavin (CC BY-SA 2.0), via Wikimedia Commons

Desert & drylandlow water

Longleaf Phlox

Phlox longifolia

Longleaf Phlox (Phlox longifolia) is a landscape plant valued for its form and structure as much as its bloom. It reaches roughly 1.2 ft at maturity and blooms in late spring. Match it to full sun to part shade and let it go dry between waterings once it is established. One caveat: like any plant, its published range is a guideline, not a guarantee, for the specific microclimate of your yard. Given a spot that matches its light and water needs, it is a dependable, low-drama addition to the yard.

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Hardiness range

A hardiness zone is not on file for this plant yet, and a ZIP-level fit check is not available for it.

How it does in your yard

HabitNot recorded
Hardiness zoneNot recorded
Mature heightAbout 1.2 ft
Waterlow
Bloom periodLate Spring
Native to the USNot recorded
Toxicitynone

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Questions

Is Longleaf Phlox native to the United States?

USDA PLANTS data does not record Longleaf Phlox as native to the United States.

What USDA hardiness zone does Longleaf Phlox need?

A minimum hardiness zone is not on file for Longleaf Phlox yet.