Bog Pimpernel (Anagallis tenella)

Bog Pimpernel

Anagallis tenella

Delicate star-shaped blooms brighten damp habitats. Low-growing perennial herb; common name: Bog Pimpernel.

Partial sun
3–4/week
Moderate
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Plant Needs

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Sunlight Prefers partial sun to dappled full shade; avoid intense midday summer direct sunlight
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Watering Requires consistently moist soil; suited to boggy conditions, avoid allowing substrate to dry out completely
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Temperature Hardy to mild frosts; thrives in cool to temperate temperatures, intolerant of extreme heat above 28°C
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Characteristics

  • Leaf: Small, opposite, oval to lanceolate bright green sessile leaves
  • Flower: Solitary 5-petaled star-shaped blooms, pale pink to magenta, opening only in sunlight
  • Stem: Slender creeping stems that root at nodes to form dense mats
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Horticulturist's Insider Field Notes (No AI Fluff)

The Golden 'Finger Test' Rule

Never water on a strict calendar. Stick your index finger 2 inches into the soil. If it feels cool and damp, wait 2–3 days. If bone dry, water thoroughly until it drains from the bottom holes.

Empty the Saucer After 20 Minutes

The #1 houseplant killer is water sitting in the catch tray. Stagnant runoff water starves roots of oxygen and causes root rot.

Turn the Pot Every 2 Weeks

Houseplants naturally lean toward the nearest window light. Give the pot a quarter-turn biweekly to maintain balanced, symmetrical architecture.

Wipe the Dust Away

Dust on leaves acts like a heavy sunshade. Gently wipe broad foliage with a damp cloth monthly to maximize photosynthesis and air purification.

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Care Guide

Watering

Keep substrate constantly moist; maintain shallow standing water in saucers for potted plants

Fertilization

Diluted balanced liquid feed once every 6 weeks. Avoid over-fertilizing to prevent foliage burn

Banana peel soak:Soak 2-3 banana peels in 1L water for 3 days, dilute 1:20 for root drench; avoid leaving solid peels in soil to prevent pest issues
Pruning
  • Trim spent flower heads to encourage continuous blooming through the growing season
  • Thin overcrowded trailing stems to improve air circulation and reduce fungal risk
  • Remove yellowing or damaged foliage to maintain a neat mat-forming habit
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Pet & Human Toxicity & Emergency Guide

🟢 Pet-Safe (Non-Toxic to Cats & Dogs)

Pet Safety Verified: According to clinical veterinary databases (ASPCA), Bog Pimpernel (Anagallis tenella) is non-toxic to both cats and dogs, making it an excellent choice for pet-friendly homes.

Pet Tolerance

Leaves, stems, and flowers contain no systemic toxins or hazardous oxalates; safe for curious puppies and kittens.

Mild Fiber Sensitivity

While non-toxic, excessive consumption of fibrous leaves may cause mild, temporary stomach upset or regurgitation.

Recommended Placement

Safe for low tables, living rooms, and active pet environments.

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Troubleshooting & Common Plant Problems

Quick diagnostic guide for common care issues affecting Bog Pimpernel (Anagallis tenella):

Yellowing Leaves

Most commonly caused by overwatering or poor drainage. Ensure topsoil dries out between waterings and check for root ventilation.

Brown or Crispy Leaf Tips

Low ambient humidity, hard tap water minerals, or direct midday sunburn. Increase humidity and use filtered water.

Drooping or Wilting Foliage

Indicates dehydration or root damage from prolonged waterlogging. Inspect soil moisture and root firmness.

Common Pests (Spider Mites, Aphids)

Dry indoor air encourages pests. Wipe leaves with a damp cloth and treat with insecticidal soap or neem oil.

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Propagation & Repotting Guide

  • Taking Cuttings: During active spring or summer growth, take a healthy 4–6 inch cutting just below a node using clean shears.
  • Rooting Medium: Place cuttings in fresh water or moist perlite mix in bright, indirect light; refresh water weekly.
  • Potting Up: Transplant into well-draining potting mix once roots reach 2 inches in length (typically 3–5 weeks).
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Seasonal Care Calendar

  • Spring & Summer (Active Growth): Water thoroughly as topsoil dries; apply diluted balanced fertilizer monthly; encourage steady growth.
  • Autumn (Transition): Gradually reduce watering frequency as daylight hours shorten; discontinue fertilization.
  • Winter (Dormancy): Water sparingly only when soil is mostly dry; protect from cold window drafts; keep in warm room.
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Frequently Asked Questions

How often should I water my Bog Pimpernel?

Water thoroughly when the top 1–2 inches of soil feel dry. In active growth (spring/summer), water every 1–2 weeks; reduce significantly in winter.

Where is the best indoor location for Bog Pimpernel?

Position in bright, filtered indirect light (e.g., near an east or south-facing window with sheer curtains). Avoid harsh direct midday sun.

Is Bog Pimpernel toxic to pets?

ASPCA-verified non-toxic; no adverse effects expected from ingestion or contact

When should I repot my Bog Pimpernel?

Repot every 1–2 years in spring when roots outgrow the drainage holes or the soil depletes nutrients.

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Garden Uses & Culture

Culture: N/A

Usage: Ornamental ground cover for bog gardens, damp rockeries, and water garden margins

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