Growli
Let's go

Plant care

Canna 'Wyoming' (Wyoming canna) care

Canna 'Wyoming'

Also called Wyoming canna, Canna lily.

RHS H2USDA 7-11Mildly toxic to petsIndoor 150-200 cm tall

Watering rhythm

Direct sun (at least 4-6 hours)

Water deeply 2-3 times per week during summer; taper off in autumn as growth slows

Jump to schedule→Get smart reminders in the app

Light

Direct sun (at least 4-6 hours)

Soil

Rich, fertile, moisture-retentive loam

Humidity

50-80%

Temp

15-35°C

Pet safety

Mildly toxic to pets

Mature size

150-200 cm tall

Care at a glance

Light

Most houseplants will scorch where canna 'wyoming' thrives. Give it the windowsill you'd otherwise leave empty because everything else burned there. Full sun is essential for the richest bronze leaf colour and the most prolific flower production. The intense orange flowers are particularly striking against the dark foliage in full sun. A plant moved abruptly from low light to direct sun bleaches in 48 hours — always acclimatise over a week.

Watering

Aim for water deeply 2-3 times per week during summer; taper off in autumn as growth slows for canna 'wyoming', but treat that as a starting point rather than a rule. A south-facing summer windowsill will dry the pot twice as fast as a north-facing winter room. Lift the pot; if it feels noticeably lighter than it did wet, water it. Cannas need generous watering through the growing season. 'Wyoming' is vigorous and can dry out quickly in containers. Keep the growing medium consistently moist but not waterlogged.

Soil and pot

Canna 'Wyoming' grows best in rich, fertile, moisture-retentive loam. Incorporate ample well-rotted compost or manure before planting. A rich growing medium sustains the vigorous, large-leaved growth this cultivar is known for. 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 'Wyoming' sits happiest at around 50-80% humidity and 15-35°C (59-95°F). Appreciates higher humidity levels, as expected from a plant of tropical origin. Low humidity combined with high temperatures can encourage spider mite infestations. If you keep the room above 15 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 'wyoming' sparingly. Apply high-potassium liquid fertiliser every 2 weeks from late spring through summer. Begin feeding once plants are actively growing and cease once foliage begins to die back in autumn. 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 'wyoming' in the Growli community. Each is annotated with the most common cause so you know where to start.

  • Canna leaf roller — A common pest; larvae roll and feed inside leaves. Remove by hand or apply Bacillus thuringiensis for larger infestations.
  • Spider mites — Thrive in hot and dry conditions. Maintain humidity, wash leaves, and treat heavy infestations with an appropriate miticide.
  • Frost and overwintering — Not frost hardy in the UK and colder US regions. Lift and store dry rhizomes in frost-free conditions after the first autumn frost.
  • Viral mosaic — Irregular yellow mottling and leaf distortion signal canna virus. Remove affected plants immediately and replace from virus-indexed stock.
  • Wind leaf damage — Large leaves tear in strong winds. Choose a sheltered site or grow in a position with windbreak protection.

Companion plants

Canna 'Wyoming' pairs well with Dahlia 'Bishop of Llandaff', Helenium 'Sahin's Early Flowerer', Rudbeckia fulgida, and Verbena bonariensis. 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, with at least one healthy bud per section. Pot up under glass in late winter and plant out after all frost risk has passed; rhizomes can also be stored over winter and divided at planting time. 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 'Wyoming' is mildly toxic to pets. The ASPCA lists Canna generalis as non-toxic to dogs and cats. Not individually listed for horses. Ingestion of large quantities of canna plant material may cause mild gastrointestinal irritation in some animals, so supervision is advisable. 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 'Wyoming' care — frequently asked questions

What is the common name for Canna 'Wyoming'?

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

How much light does canna 'wyoming' need?

Canna 'Wyoming' grows best in direct sun (at least 4-6 hours). Full sun is essential for the richest bronze leaf colour and the most prolific flower production. The intense orange flowers are particularly striking against the dark foliage in full sun.

How often should I water canna 'wyoming'?

Water canna 'wyoming' water deeply 2-3 times per week during summer; taper off in autumn as growth slows. Cannas need generous watering through the growing season. 'Wyoming' is vigorous and can dry out quickly in containers. Keep the growing medium consistently moist but not waterlogged. 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 'wyoming' toxic to cats and dogs?

Canna 'Wyoming' is mildly toxic to pets. The ASPCA lists Canna generalis as non-toxic to dogs and cats. Not individually listed for horses. Ingestion of large quantities of canna plant material may cause mild gastrointestinal irritation in some animals, so supervision is advisable.

What USDA hardiness zone does canna 'wyoming' grow in?

Canna 'Wyoming' is rated for USDA zone 7-11 and RHS hardiness H2. Outside that range, grow it as a container plant that overwinters indoors before the first hard frost.

Canna 'Wyoming' deep-dive guides

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

Featured in these plant shortlists

Canna 'Wyoming' qualifies for 3 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

Related guides

Canna 'Wyoming' is also commonly called Wyoming canna or Canna lily.