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Plant care

Tuolumne Fawn Lily (Tuolumne dogtooth violet) care

Erythronium tuolumnense

Also called Tuolumne fawn lily, Tuolumne dogtooth violet, Pagoda lily.

RHS H7USDA 3-9Mildly toxic to petsIndoor 20–35 cm tall in flower

Watering rhythm

Medium indirect light (a couple of metres from a window)

Consistently moist during growth (late winter to early summer); do not allow to dry out even during dormancy

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Light

Medium indirect light (a couple of metres from a window)

Soil

Moist, humus-rich, well-drained, slightly acidic to neutral

Humidity

Moderate to high

Temp

-20 to 20°C

Pet safety

Mildly toxic to pets

Mature size

20–35 cm tall in flower

Care at a glance

Light

Tuolumne Fawn Lily wants the spot a few feet back from a sunny window — bright enough to read a paperback at noon, but the sun never falls directly on the leaves. Grow in dappled shade or partial shade, ideally under deciduous trees or in a shaded border that receives morning sun; avoid deep, permanent shade, which prevents flowering, and afternoon direct sun, which scorches leaves and accelerates dormancy. A faint hand shadow at midday is the right amount; a sharp dark shadow means it's getting direct sun and probably too much.

Watering

Water tuolumne fawn lily consistently moist during growth (late winter to early summer); do not allow to dry out even during dormancy. The actual day count varies with pot size, light, and season — the finger test (or lifting the pot to feel its weight) is more reliable than a fixed calendar. Empty any drainage saucer afterwards so the pot isn't sitting in water. Maintain evenly moist soil throughout the brief growing season and ensure the soil never dries out completely in summer, as the bulbs have no true water-storage adaptation and will desiccate; a cool, shaded position helps retain moisture naturally.

Soil and pot

Tuolumne Fawn Lily grows best in moist, humus-rich, well-drained, slightly acidic to neutral. Thrives in leafy, woodland-type soil with a slightly acidic to neutral pH (6.0–7.0); incorporate generous amounts of leaf mould or well-rotted compost to replicate the decomposed organic matter of its native Sierra Nevada woodland habitat. 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

Tuolumne Fawn Lily sits happiest at around Moderate to high humidity and -20 to 20°C (-4 to 68°F). Benefits from the naturally higher humidity found under a woodland canopy; mulching with leaf mould helps maintain soil moisture and moderate microclimate humidity around the bulbs. If you keep the room above 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 tuolumne fawn lily sparingly. Top-dress with leaf mould in autumn each year; a light application of balanced, slow-release fertiliser worked into the soil in early autumn supports bulb development for the following spring's flowering display. 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 tuolumne fawn lily in the Growli community. Each is annotated with the most common cause so you know where to start.

  • Bulb rot from desiccation or waterlogging — Bulbs perish if they dry out during summer dormancy or sit in waterlogged soil in winter. Plant in well-drained but moisture-retentive soil, apply a cool mulch to prevent drying, and avoid planting in frost pockets where standing water accumulates.
  • Vine weevil and slugs — Vine weevil larvae attack the bulbs underground, causing sudden plant collapse; apply nematode biological controls in late summer. Slugs target emerging shoots in early spring — use copper tape, grit mulches, or biological slug controls to protect new growth.

Propagation

Propagate by carefully dividing established clumps during dormancy in early to midsummer, detaching offset bulblets and replanting immediately at 5–7 cm depth in prepared moist soil; do not allow bulbs to dry out at any stage. Can also be grown from fresh seed sown in autumn in pots in a cold frame, though seedlings take three to four years to reach flowering size. 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

Tuolumne Fawn Lily is mildly toxic to pets. Erythronium is not listed as toxic to cats or dogs by the ASPCA, and the genus is widely noted as non-toxic by horticultural authorities, distinguishing it from the true lilies (Lilium) that are highly dangerous to cats. However, some Erythronium species have historically been used as emetics and contain colchicine-like compounds in trace amounts; since ASPCA does not explicitly list E. tuolumnense as confirmed non-toxic, a precautionary mildly-toxic classification is used. Consult a veterinarian if a pet ingests any part of this plant. 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.

Tuolumne Fawn Lily care — frequently asked questions

What is the common name for Erythronium tuolumnense?

Erythronium tuolumnense is most commonly called Tuolumne Fawn Lily, but it is also known as Tuolumne fawn lily, Tuolumne dogtooth violet, Pagoda lily. The names refer to the same species, so care instructions for Tuolumne Fawn Lily apply identically to anything sold as Tuolumne dogtooth violet.

How much light does tuolumne fawn lily need?

Tuolumne Fawn Lily grows best in medium indirect light (a couple of metres from a window). Grow in dappled shade or partial shade, ideally under deciduous trees or in a shaded border that receives morning sun; avoid deep, permanent shade, which prevents flowering, and afternoon direct sun, which scorches leaves and accelerates dormancy.

How often should I water tuolumne fawn lily?

Water tuolumne fawn lily consistently moist during growth (late winter to early summer); do not allow to dry out even during dormancy. Maintain evenly moist soil throughout the brief growing season and ensure the soil never dries out completely in summer, as the bulbs have no true water-storage adaptation and will desiccate; a cool, shaded position helps retain moisture naturally. 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 tuolumne fawn lily toxic to cats and dogs?

Tuolumne Fawn Lily is mildly toxic to pets. Erythronium is not listed as toxic to cats or dogs by the ASPCA, and the genus is widely noted as non-toxic by horticultural authorities, distinguishing it from the true lilies (Lilium) that are highly dangerous to cats. However, some Erythronium species have historically been used as emetics and contain colchicine-like compounds in trace amounts; since ASPCA does not explicitly list E. tuolumnense as confirmed non-toxic, a precautionary mildly-toxic classification is used. Consult a veterinarian if a pet ingests any part of this plant.

What USDA hardiness zone does tuolumne fawn lily grow in?

Tuolumne Fawn Lily is rated for USDA zone 3-9 and RHS hardiness H7. Outside that range, grow it as a container plant that overwinters indoors before the first hard frost.

Tuolumne Fawn Lily deep-dive guides

Every aspect of tuolumne fawn lily care, each with its own calibrated guide:

Featured in these plant shortlists

Tuolumne Fawn Lily 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

Tuolumne Fawn Lily is also known as Tuolumne fawn lily, Tuolumne dogtooth violet, and Pagoda lily.