North America Non-native Plant

Applecactus

Botanical name: Harrisia pomanensis

USDA symbol: HAPO6

Life cycle: perennial

Habit: vine

Native status: Non-native, reproduces and persists in the wild in Hawaii  

Synonyms: Harrisia bonplandii (Parmentier) Britton & Rose (HABO)   

Applecactus: A Night-Blooming Beauty for Warm Climate Gardens If you’re looking to add some dramatic desert flair to your landscape, you might want to consider the applecactus (Harrisia pomanensis). This striking columnar cactus brings a touch of the exotic to warm climate gardens with its towering stems and spectacular nighttime ...

Applecactus: A Night-Blooming Beauty for Warm Climate Gardens

If you’re looking to add some dramatic desert flair to your landscape, you might want to consider the applecactus (Harrisia pomanensis). This striking columnar cactus brings a touch of the exotic to warm climate gardens with its towering stems and spectacular nighttime flower show.

What Exactly is Applecactus?

Applecactus is a perennial shrub that can grow into quite the statement piece in your garden. Despite being called a shrub, don’t expect your typical leafy bush – this multi-stemmed woody plant is all about those distinctive segmented stems that can reach 13 to 16 feet in height under the right conditions. You might also see it listed under its botanical synonym, Harrisia bonplandii.

Where Does It Come From?

Here’s something important to know upfront: applecactus isn’t native to the United States. It originally hails from the Caribbean region, particularly Argentina and surrounding areas. In the U.S., it has established itself in Hawaii, where it reproduces on its own in the wild without human intervention.

Why Consider Growing Applecactus?

There are several compelling reasons why gardeners in suitable climates might want to add this cactus to their landscape:

  • Dramatic nighttime display: The real magic happens after dark when applecactus produces large, white, fragrant flowers that open at night
  • Low maintenance: Once established, it’s extremely drought tolerant and requires minimal care
  • Architectural interest: The columnar growth habit adds vertical structure and modern appeal to garden designs
  • Pollinator support: Those nocturnal blooms attract night-flying pollinators like moths and bats
  • Colorful fruits: After flowering, it produces attractive red fruits

Perfect Garden Settings

Applecactus shines in specific garden styles and situations:

  • Xeriscaping and drought-tolerant landscapes
  • Desert and Mediterranean-style gardens
  • Modern, architectural garden designs
  • As a specimen plant or focal point
  • Barrier plantings (those stems can be quite formidable!)

Growing Conditions and Care

Success with applecactus comes down to mimicking its native desert conditions:

  • Sunlight: Full sun is essential – this plant craves bright, direct sunlight
  • Soil: Well-draining soil is absolutely critical; soggy conditions will spell disaster
  • Water: Allow soil to dry completely between waterings; overwatering is the quickest way to kill it
  • Climate: Thrives in USDA hardiness zones 9b through 11
  • Frost protection: Cannot tolerate freezing temperatures

Planting and Care Tips

Getting your applecactus off to a good start is straightforward:

  • Plant in spring after all danger of frost has passed
  • Ensure excellent drainage by amending heavy soils with sand or gravel
  • Water sparingly – less is definitely more with this plant
  • No fertilization needed; desert plants prefer lean soils
  • Wear thick gloves when handling due to spines
  • Prune only to remove damaged segments

A Word About Native Alternatives

While applecactus can be a stunning addition to appropriate gardens, it’s worth considering native cacti alternatives that support local ecosystems more directly. If you’re in the southwestern United States, look into native species like barrel cactus, prickly pear, or organ pipe cactus that offer similar architectural appeal while supporting native wildlife.

The Bottom Line

Applecactus can be a spectacular choice for gardeners in warm, dry climates who want a low-maintenance plant with serious visual impact. Its night-blooming flowers and towering presence make it a conversation starter, and its drought tolerance makes it perfect for water-wise gardening. Just remember that it’s not native to the continental U.S., so consider local alternatives when possible, and always check local regulations before planting any non-native species in your area.

Applecactus

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Caryophyllidae

Order

Caryophyllales

Family

Cactaceae Juss. - Cactus family

Genus

Harrisia Britton - applecactus

Species

Harrisia pomanensis (F.A.C. Weber) Britton & Rose - applecactus

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