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Plant guide

Firecracker flower.

Crossandra infundibuliformis

Pronounced kro-SAN-druh in-fun-dib-yoo-lih-FOR-mis

Also known as firecracker-flower, firecracker-plant

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Crossandra infundibuliformis
Photo by Raja Sekhar Chimirala (CC BY) via gbif

The firecracker flower is a cheerful tropical shrub that produces vibrant, fan shaped blooms. It loves warmth and humidity, making it a great choice for bright indoor spots. You will enjoy its long blooming season if you keep it happy.

Another photo of Firecracker flower
Photo by Greg III Espera (CC BY) via iNaturalist

At a glance

Care level
Moderate
Plant type
Tropical evergreen shrub
Light
Bright indirect light is best, though it can handle some morning sun.
Indoor light
Bright indirect
Water
Every 5 to 7 days
Mature size
1 to 3 feet
Growth rate
Medium
Hardiness
USDA 10 to 11
Bloom time
Spring to fall

Care

Keep the soil consistently moist but never soggy, as this plant dislikes drying out completely. High humidity is key to preventing leaf drop and encouraging continuous flowering. Watch for yellowing leaves, which often signal that the soil is too wet or the air is too dry.

Watering
Water when the top inch of soil feels dry to the touch.
Feeding
Feed with a balanced liquid fertilizer during the active growing season.
Pruning
Pinch back stems to encourage a bushier shape and more blooms.
Repotting
Repot in the spring when the roots begin to crowd the container.
Soil
Well draining, peat based potting mix
Soil pH
6.1 to 7.5
Temperature
15 to 30°C
Humidity
60 to 80%
Drought tolerance
Low
Lifespan
Short-lived perennial, often grown as an annual.
Deer and rabbits
Moderate

Signs it needs repotting

  • Roots growing out of the drainage holes.
  • Water running straight through the pot without soaking in.
  • Stunted growth during the active season.

Safety

People
The plant is generally considered non-toxic, but ingestion should be avoided.
Pets
This plant is generally considered non toxic to cats and dogs.
Children
Keep out of reach of small children to prevent accidental ingestion of leaves or flowers.
Contact allergens
No specific skin irritants are known.
Airborne allergens
No notable airborne allergens are associated with this plant.
Edibility
This plant is not intended for consumption and may cause digestive upset if ingested.

How to identify it

  • Glossy dark green leaves
  • Bright orange or salmon flowers
  • Spikes of fan shaped blooms
  • Compact bushy growth habit
Height
0.3 to 0.9m
Spread
0.3 to 0.6m
Leaves
dark green, glossy, evergreen
Flowers
orange, apricot, coral, 2 to 5cm

Problems to watch for

    Check your firecracker flower from a photo

    Pocket Botanist looks at a photo of your plant and tells you what's wrong and what to try first.

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    Growing it

    Propagation
    cuttings, seed
    When to plant
    spring, early summer
    Overwintering
    Bring containers indoors before temperatures drop below 15 degrees Celsius. Place in a bright spot away from cold drafts.
    In containers
    It is an excellent container plant that prefers a pot with good drainage and a size of at least 15 to 20 centimeters.

    Stem Cuttings

    1. Take a 10 centimeter cutting from a healthy stem.
    2. Remove the lower leaves.
    3. Place in moist potting mix and cover with a plastic bag to maintain humidity.

    Group this plant with other tropicals to create a microclimate that helps maintain necessary humidity levels.

    Grows well with

    • Ferns · They share similar requirements for high humidity and indirect light.
    • Peace Lily · Both plants thrive in warm, humid indoor environments.

    Similar species

    • Aphelandra · Another tropical plant with showy, long-lasting blooms.

    Science

    Family
    Acanthaceae
    Genus
    Crossandra
    Order
    Lamiales
    Class
    Magnoliopsida
    Native range
    Southern India and Sri Lanka.
    Conservation
    This species is not currently threatened in its native habitat.

    It grows as an understory plant in tropical forests, where it benefits from dappled light and high humidity.

    Value to wildlife
    nectar source
    Pollinators
    butterflies
    Uses
    container plant, houseplant, tropical bedding

    Through the year

    JFMAMJJASOND
    Flowering
    Fruiting
    Foliage

    Ecological indicators

    Salinity
    2/9
    Soil reaction
    6/9
    Light
    6/9
    Temperature
    8/9
    Moisture
    7/9
    Nutrients
    6/9

    Taxonomy resolved against GBIF.

    Questions people ask

    Does it need direct sun?
    It prefers bright, indirect light to keep the foliage healthy and blooming.
    How often should I water?
    Keep the soil consistently moist but never waterlogged.

    Where the name comes from

    The scientific name infundibuliformis refers to the funnel shape of the individual flowers.

    Good to know

    • It is commonly called the firecracker flower because of its vibrant orange color.
    • The genus name comes from the Greek words for fringe and man, referring to the fringed anthers.
    • It is a popular choice for indoor color in cooler climates.

    Keep your firecracker flower growing

    This page is a general guide. Save your plant in Pocket Botanist and you get care reminders timed for this plant, plus a care history that shows what worked.

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    This guide was generated with AI on and checked against GBIF taxonomy. It is general information, not horticultural or veterinary advice. Read about how we build these guides.