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Plant care

Canna 'Bengal Tiger' (Bengal Tiger Canna) care

Canna 'Bengal Tiger'

Also called Bengal Tiger Canna, Pretoria Canna.

RHS H3USDA 7-11Mildly toxic to petsIndoor 120-180 cm tall

Watering rhythm

2-3days

Water every 2-3 days in summer to keep soil consistently moist

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Light

Direct sun (at least 4-6 hours)

Soil

Rich, moisture-retentive loam with good drainage

Humidity

50-75%

Temp

18-32°C

Pet safety

Mildly toxic to pets

Mature size

120-180 cm tall

Care at a glance

Light

Aim for at least 4-6 hours of direct sun on the leaves. Full sun (at least 6 hours) is required for the richest yellow striping in the foliage and the strongest flowering. In too much shade the stripes fade to pale green and the plant loses its visual impact. If your only bright window faces south, that's perfect for canna 'bengal tiger' — same window any aroid would fry on.

Watering

Watering canna 'bengal tiger': water every 2-3 days in summer to keep soil consistently moist. The number that matters isn't the day of the week — it's how dry the top 2-3 cm of the pot feels. A finger in the soil tells you more than a watering app. After every watering, tip the saucer. This cultivar is particularly thirsty in hot weather. A deep mulch around the base helps retain moisture and keeps the root zone cool. Do not let containers dry out — daily checking may be needed in peak summer.

Soil and pot

Canna 'Bengal Tiger' grows best in rich, moisture-retentive loam with good drainage. Incorporate large amounts of well-rotted compost or farmyard manure. In containers, use John Innes No. 3 with added slow-release fertiliser pellets. Avoid poorly drained or compacted soils. A pot with a working drainage hole is non-negotiable for this species — even free-draining mix will turn soggy in a closed planter. If you love the look of a decorative pot without a hole, use it as a cachepot around an inner nursery pot you can lift out to water.

Humidity and temperature

Canna 'Bengal Tiger' sits happiest at around 50-75% humidity and 18-32°C (64-90°F). Thrives in higher humidity. Grouping with other large-leaved tropicals or placing near a water feature raises local humidity, helping to prevent leaf margin scorch. If you keep the room above 18 year-round and avoid placing the plant near a cold draught, a hot radiator, or an air-conditioning vent, you have already handled the two biggest indoor stressors.

Fertilising

Feed canna 'bengal tiger' sparingly. Apply a high-potassium liquid feed every 2 weeks from early summer to encourage flowering alongside the lush foliage. A slow-release granular fertiliser worked into the planting hole provides a sustained background nutrient supply. Skip fertiliser entirely on a stressed, recently-repotted, or actively wilting plant — fertiliser salts make damage worse, not better. Wait for a round of healthy new growth before resuming a feeding rhythm.

Common problems

Below are the issues we see most often on canna 'bengal tiger' in the Growli community. Each is annotated with the most common cause so you know where to start.

  • Canna leaf roller — Caterpillars of the Brazilian skipper roll and feed within young leaves, leaving ragged holes. Remove by hand or apply Bt spray early in the caterpillar stage.
  • Spider mites — Common in dry, hot conditions. Dull, stippled foliage and fine webbing are tell-tale signs. Treat with neem oil or insecticidal soap and raise humidity.
  • Botrytis on stored rhizomes — Fuzzy grey mould develops on rhizomes stored in cold, damp conditions. Improve ventilation, reduce moisture, and treat affected areas with a fungicide dust.
  • Rust — Orange pustules on leaf undersides, especially in warm, wet summers. Remove infected leaves and avoid wetting foliage.
  • Virus (Bean yellow mosaic) — Irregular yellow streaking on leaves; spread by aphids. Control aphid populations and remove affected plants.

Companion plants

Canna 'Bengal Tiger' pairs well with Canna 'Phasion', Colocasia esculenta 'Black Magic', Musa basjoo, and Strelitzia reginae. These are species with similar light and water needs, so you can group them in the same room or on the same shelf and water as a batch.

Propagation

Divide rhizomes in spring using a sharp, clean knife, with at least one bud on each section. Pre-sprout in a warm propagation tray at 20°C before planting out in the border after the last frost date. Propagation is the cheapest, most satisfying way to expand a collection — and it doubles as insurance against losing a mature plant to an accident. Take a backup cutting once the parent is established and healthy.

Toxicity to pets

Canna 'Bengal Tiger' is mildly toxic to pets. Canna 'Bengal Tiger' is not individually listed by the ASPCA. The Canna genus is generally considered to have low toxicity, but ingestion may produce mild gastrointestinal upset in dogs and cats; keep rhizomes out of pets' reach. If you keep cats, dogs, or curious children in the house, weigh placement carefully — a high shelf or a hanging planter is enough for casual safety. For severe ingestion incidents, call your local vet and the ASPCA Animal Poison Control Center (in the US, 888-426-4435).

Pet-safety status is sourced from the ASPCA Toxic and Non-Toxic Plant List, which catalogues the most-asked-about plants for cats, dogs, and horses.

Canna 'Bengal Tiger' care — frequently asked questions

What is the common name for Canna 'Bengal Tiger'?

Canna 'Bengal Tiger' is most commonly called Canna 'Bengal Tiger', but it is also known as Bengal Tiger Canna, Pretoria Canna. The names refer to the same species, so care instructions for Canna 'Bengal Tiger' apply identically to anything sold as Bengal Tiger Canna.

How much light does canna 'bengal tiger' need?

Canna 'Bengal Tiger' grows best in direct sun (at least 4-6 hours). Full sun (at least 6 hours) is required for the richest yellow striping in the foliage and the strongest flowering. In too much shade the stripes fade to pale green and the plant loses its visual impact.

How often should I water canna 'bengal tiger'?

Water canna 'bengal tiger' water every 2-3 days in summer to keep soil consistently moist. This cultivar is particularly thirsty in hot weather. A deep mulch around the base helps retain moisture and keeps the root zone cool. Do not let containers dry out — daily checking may be needed in peak summer. The finger-test (or lifting the pot to feel its weight) beats a fixed weekly calendar because pot size, light, and season all change how fast the soil dries.

Is canna 'bengal tiger' toxic to cats and dogs?

Canna 'Bengal Tiger' is mildly toxic to pets. Canna 'Bengal Tiger' is not individually listed by the ASPCA. The Canna genus is generally considered to have low toxicity, but ingestion may produce mild gastrointestinal upset in dogs and cats; keep rhizomes out of pets' reach.

What USDA hardiness zone does canna 'bengal tiger' grow in?

Canna 'Bengal Tiger' is rated for USDA zone 7-11 (lift in zones 6 and colder; protect with heavy mulch in zone 7) and RHS hardiness H3. Outside that range, grow it as a container plant that overwinters indoors before the first hard frost.

Canna 'Bengal Tiger' deep-dive guides

Every aspect of canna 'bengal tiger' care, each with its own calibrated guide:

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Canna 'Bengal Tiger' qualifies for 5 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

Related guides

Canna 'Bengal Tiger' is also commonly called Bengal Tiger Canna or Pretoria Canna.