Non-native Plants

Queen Of The Night

Selenicereus grandiflorus

USDA symbol: SEGR10

perennial shrub

Hawaii: non-native, naturalized
Puerto Rico: non-native, naturalized
U.S. Virgin Islands: non-native, naturalized

If you’re looking for a plant that will literally stop traffic once a year, meet the Queen of the Night (Selenicereus grandiflorus). This dramatic cactus puts on one of nature’s most exclusive shows – a single night of breathtaking blooms that appear just once annually. But before you fall head ...

Queen of the Night: The Spectacular Night-Blooming Cactus

If you’re looking for a plant that will literally stop traffic once a year, meet the Queen of the Night (Selenicereus grandiflorus). This dramatic cactus puts on one of nature’s most exclusive shows – a single night of breathtaking blooms that appear just once annually. But before you fall head over heels for this botanical diva, let’s explore what makes this plant tick and whether it deserves a spot in your garden.

What Exactly Is Queen of the Night?

Queen of the Night is a perennial climbing cactus that goes by the botanical name Selenicereus grandiflorus. You might also see it listed under its synonyms Cereus grandiflorus or Selenicereus macdonaldiae in older gardening references. This woody shrub typically grows as a multi-stemmed plant, usually staying under 13-16 feet in height, though it can surprise you and grow taller under the right conditions.

What sets this cactus apart from your typical prickly pear is its spectacular flowering display. Once a year, usually on a warm summer night, the plant produces enormous white flowers that can reach up to a foot across. These blooms open after dark and close by morning, earning the plant its royal nickname.

Where Does It Come From?

Here’s where things get interesting from a native gardening perspective. Queen of the Night isn’t actually native to the United States. It’s originally from the Caribbean and Central America, but it has established itself and reproduces on its own in Hawaii, Puerto Rico, and the U.S. Virgin Islands.

  • Species observed
  • No observations

While it’s thriving in these tropical locations, it’s important to note that this makes it a non-native species in U.S. territories. It’s not currently listed as invasive or problematic, but as responsible gardeners, we should always consider native alternatives first.

The Spectacular Show (And Why You Might Want One)

Let’s be honest – the main reason people grow Queen of the Night is for that once-a-year floral spectacular. The massive white blooms are genuinely breathtaking and create an unforgettable experience. Here’s what makes it appealing:

  • Dramatic annual blooming event that becomes a neighborhood attraction
  • Large, fragrant white flowers that can reach 12 inches across
  • Night-blooming nature makes it perfect for evening gardens
  • Attracts fascinating nocturnal pollinators like bats and night-flying moths
  • Drought-tolerant once established
  • Unique conversation piece and specimen plant

Growing Conditions and Care

If you live in USDA hardiness zones 10-12 and want to try growing Queen of the Night, here’s what you need to know:

Location: This cactus prefers partial shade to full sun and needs protection from frost. It’s perfect for tropical and subtropical gardens, xerophytic landscapes, or large containers that can be moved indoors in cooler climates.

Soil: Well-draining soil is absolutely essential. Like most cacti, Queen of the Night will rot in waterlogged conditions. A cactus potting mix or sandy, well-amended garden soil works best.

Water: Once established, this plant is quite drought-tolerant. Water moderately during the growing season and reduce watering in winter. Always let the soil dry out between waterings.

Support: Since it’s a climbing cactus, you’ll need to provide some kind of support structure like a trellis, fence, or large tree for it to climb.

The Reality Check

Before you rush out to buy one, consider these potential drawbacks:

  • It only blooms once per year (and you might miss it!)
  • The plant can look somewhat scraggly the other 364 days of the year
  • It requires warm temperatures year-round
  • As a non-native species, it doesn’t support local ecosystems the way native plants do

Native Alternatives to Consider

While Queen of the Night certainly has its charm, consider these native alternatives that provide similar benefits:

  • Native night-blooming cereus species in your region
  • Native flowering vines that attract local pollinators
  • Indigenous cacti and succulents that support local wildlife

Check with your local native plant society or extension office for recommendations specific to your area.

The Bottom Line

Queen of the Night is undeniably spectacular and can be a fascinating addition to the right garden. If you live in zones 10-12 and want a unique conversation piece that puts on an annual show, this might be the plant for you. Just remember that as a non-native species, it won’t provide the same ecological benefits as indigenous plants.

Whether you choose to grow Queen of the Night or opt for native alternatives, the most important thing is creating a garden that brings you joy while supporting your local ecosystem. Sometimes that means making room for a few well-behaved non-natives alongside a foundation of native plants – and that’s perfectly okay!

Selenicereus grandiflorus 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. Selenicereus grandiflorus is also known as:

Cereus grandiflorus | USDA symbol: CEGR5
Selenicereus macdonaldiae Britton & | USDA symbol: SEMA22

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.

Classification

Group: Dicot
Kingdom: Plantae - Plants
Subkingdom: Tracheobionta - Vascular plants
Superdivision: Spermatophyta - Seed plants
Division: Magnoliophyta - Flowering plants
Class: Magnoliopsida - Dicotyledons
Subclass: Caryophyllidae
Order: Caryophyllales
Family: Cactaceae Juss. - Cactus family
Genus: Selenicereus (A. Berger) Britton & Rose - moonlight cactus

Species: Selenicereus grandiflorus (L.) Britton & Rose - queen of the night

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