Non-native Plants

Night And Afternoon

Pseuderanthemum variabile

USDA symbol: PSVA2

perennial forb

Hawaii: non-native, naturalized
Lower 48 states: non-native, naturalized
Puerto Rico: non-native, naturalized

Meet the charmingly named night and afternoon plant (Pseuderanthemum variabile) – a perennial herb that sounds more like a poetry collection than a garden resident! This interesting little plant has been making itself at home in warm American climates, bringing its unique character to gardens from Florida to Hawaii. The ...

Night and Afternoon Plant: A Quirky Addition to Warm Climate Gardens

Meet the charmingly named night and afternoon plant (Pseuderanthemum variabile) – a perennial herb that sounds more like a poetry collection than a garden resident! This interesting little plant has been making itself at home in warm American climates, bringing its unique character to gardens from Florida to Hawaii.

What Makes Night and Afternoon Special?

The night and afternoon plant is what botanists call a forb – basically a soft-stemmed perennial that doesn’t develop woody tissue like shrubs or trees. Think of it as nature’s version of a friendly herbaceous neighbor that comes back year after year without the drama of woody plants.

This plant goes by the scientific name Pseuderanthemum variabile, and you might occasionally see it listed under old names like Pseuderanthemum fasciculatum or Pseuderanthemum praecox in older gardening references.

Where Does It Call Home?

Originally from tropical regions of the Americas, the night and afternoon plant has become a naturalized resident in several U.S. locations. You’ll find established populations in Florida, South Carolina, Hawaii, and Puerto Rico, where it has proven quite adaptable to local conditions.

  • Species observed
  • No observations

Is It Right for Your Garden?

Here’s the straight scoop on whether this plant deserves a spot in your landscape:

The Good News

  • Hardy perennial that returns each year
  • Attractive variegated foliage adds visual interest
  • Purple and white flowers provide seasonal color
  • Works well as ground cover or border plant
  • Relatively low-maintenance once established

Things to Consider

  • Non-native species that may self-seed
  • Limited to warm climate zones (USDA 9-11)
  • May not provide significant wildlife benefits compared to native alternatives

Growing Conditions and Care

The night and afternoon plant is refreshingly easygoing about its growing conditions:

  • Climate: Thrives in USDA hardiness zones 9-11
  • Light: Partial shade to full sun
  • Soil: Well-draining soil of average fertility
  • Water: Moderate watering needs
  • Maintenance: Minimal care required once established

Wetland Tolerance

Interestingly, this plant’s relationship with water varies by region. In coastal areas, it can handle occasional wet conditions, while in places like the Caribbean, it strongly prefers drier, upland sites. In most locations, it typically grows in non-wetland areas but won’t throw a fit if it occasionally gets its feet wet.

Garden Design Ideas

The night and afternoon plant works beautifully in:

  • Tropical and subtropical garden themes
  • Mixed perennial borders
  • Ground cover applications in warm climates
  • Container gardens that can be protected in cooler areas

Consider Native Alternatives

While the night and afternoon plant can be a lovely addition to warm climate gardens, you might also consider native alternatives that provide similar aesthetic appeal while supporting local ecosystems. Native ground covers and herbaceous perennials in your region often offer better wildlife benefits and are naturally adapted to your local conditions.

The Bottom Line

The night and afternoon plant offers an easy-care option for gardeners in warm climates who appreciate unique foliage and flowers. While it’s not native to North America, it’s not considered problematic either – making it a neutral choice for gardeners who want something a little different. Just remember that if you’re in zones 8 and below, this tropical character will likely need protection or indoor overwintering to survive your winters.

Whether you choose to invite this quirky plant into your garden or opt for native alternatives, the most important thing is creating a landscape that brings you joy while being mindful of your local ecosystem!

Pseuderanthemum variabile is also known as...

Often we refer to plants by their common names. When shopping for plants the scientific name is the best way to positively identify the plant species you desire. But some plants have more than one name! While it doesn't happen often, nurseries might display one name while you're searching for another. Pseuderanthemum variabile is also known as:

Pseuderanthemum fasciculatum auct. non | USDA symbol: PSFA2
Pseuderanthemum praecox auct. non | USDA symbol: PSPR

Why do some plants have more than one name? Over time plant species may be renamed for a few reasons:

  1. Botanists in different regions named the same plant without knowing it had already been classified.
  2. A species was reclassified after scientific advances in, for example, DNA analysis.
  3. Slight variations within a species are sometimes mistakenly identified as entirely new species.

Wetland Status

The rule of seasoned gardeners and landscapers is to choose the "right plant for the right place" — matching plants to their ideal growing conditions, so they'll thrive with less care and fewer inputs. But the simplicity of this catchphrase conceals how tricky plant selection can be if you don't have the right information. While tags on nursery plants list watering requirements, there's more to the story.

Knowing a plant's wetland status can simplify the process by revealing the interaction between plants, water, and soil. You might be surprised to learn that popular landscape plants are wetland species! And what may be a wetland plant in one area, in another it might thrive in drier conditions. The table below gives insight into the preferred growing conditions of this plant throughout its geographical distribution.

Region
Preferred Habitat

Atlantic and Gulf Coastal Plain (AL, AR, DC, DE, FL, GA, IL, KY, LA, MD, MS, MO, NC, NJ, OK, PA, SC, TN, TX, VA)

Facultative

Caribbean (PR, VI)

Obligate Upland

Eastern Mountains and Piedmont (AL, AR, DC, DE, GA, IL, IN, KS, KY, MD, MO, NC, NJ, NY, OH, OK, PA, SC, TN, VA, WV)

Facultative Upland

Hawaii ()

Facultative Upland
Wetland Glossary
Obligate Wetland
Facultative Wetland
Facultative
Facultative Upland
Obligate Upland
Almost always occurs in wetlands
Usually occurs in wetlands but may occur in non-wetlands
Can occur in wetlands and non-wetlands
Usually occurs in non-wetlands but may occur in wetlands
Almost never occurs in wetlands

Classification

Group: Dicot
Kingdom: Plantae - Plants
Subkingdom: Tracheobionta - Vascular plants
Superdivision: Spermatophyta - Seed plants
Division: Magnoliophyta - Flowering plants
Class: Magnoliopsida - Dicotyledons
Subclass: Asteridae
Order: Scrophulariales
Family: Acanthaceae Juss. - Acanthus family
Genus: Pseuderanthemum Radlk. - pseuderanthemum

Species: Pseuderanthemum variabile (R. Br.) Radlk. - night and afternoon

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