Small-flowered Indian Paintbrush (Castilleja parviflora)

Small-flowered Indian Paintbrush

Castilleja parviflora

Delicate bracts mimic tiny painted blooms, a charming wildflower. Perennial hemiparasitic herb; common name: Small-flowered Indian Paintbrush.

Full sun
1–2/week
Moderate
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Plant Needs

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Sunlight Full sun to partial shade; thrives in open meadow or rocky alpine slopes
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Watering Water moderately during active growth; tolerate brief dry periods once established
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Temperature Hardy to -15°C; prefers cool temperate conditions; avoid prolonged extreme heat above 28°C
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Characteristics

  • Leaf: Narrow linear gray-green leaves, 1–4 cm long, with fine sparse hairs
  • Flower: Inconspicuous yellow-green tiny flowers surrounded by bright pink to red showy bracts
  • Stem: Slender erect stems covered in soft pubescence
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Care Guide

Watering

Keep soil evenly moist but not waterlogged during active growth

Fertilization

Minimal to no fertilization; low soil fertility supports natural growth. Do not use high-nitrogen fertilizers as they can disrupt hemiparasitic nutrient uptake

Diluted banana peel tea:Use only once every 2 months; dilute 1:40 with water to avoid over-fertilization; apply directly to soil around base
Pruning
  • Deadhead spent blooms to encourage extended flowering period
  • Trim back faded foliage in late autumn to tidy clumps and prepare for winter dormancy
  • Remove any diseased or damaged stems promptly to prevent spread of fungal pathogens
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Non-toxic to cats; no adverse effects reported

Humans: No documented toxicity to humans per ASPCA and botanical records

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Garden Uses & Culture

Culture: N/A

Usage: Native wildflower for pollinator gardens; supports bees, butterflies, and hummingbirds