Wood Avens

geum urbanum

Also known as: ["Saints' Herb","Herb Bennet","Wood Avens"]

Family: Rosaceae Genus: Geum Category: Herbs & Weeds

Overview

A perennial herbaceous plant native to Europe and Western Asia, known for its bright yellow flowers and peppery-tasting roots.

Benefits & Perks

["wildlife attractant (bees, butterflies, birds)","medicinal use","aesthetic foliage"]

Botanical Classification

Phylum: Magnoliophyta
Class: Magnoliopsida
Order: Rosales
Family: Rosaceae
Genus: Geum
Botanical Name: Geum urbanum

Plant Characteristics

Basic Information
  • Category: Herbs & Weeds
  • Suitable Location: garden border, woodland edge, or container in partial shade
  • Suitable For:
    Beginners Busy People (low Maintenance) Wildlife Supporters
  • Is Weed: No
  • Allergenicity: low
Environmental Needs
  • Climate: {"temperatureRange":"5–30°C"}
  • Hardiness: {"zones":"5–9"}
  • Misting: rarely required, only if grown in very dry indoor conditions
  • Drainage: Moderately well-draining; avoid heavy clay soils that retain too much water.
  • Soil Type: Rich, loamy soil with good organic matter; well-draining but moisture-retentive.
Maintenance Level
  • Maintenance Level: moderate
  • Toughness Level: moderate
  • Pruning Frequency: Deadhead flowers as they fade; prune lightly in late winter or early spring; divide every 3–4 years.
  • Pruning Intensity: Light to moderate; avoid heavy pruning unless dividing the plant.
Care Details

Ideal Sunlight Coverage:
Partial shade to full sun (4–6 hours of direct sunlight or bright indirect light); prefers morning sun and afternoon shade.

Sunlight Tolerance Tips:
Acclimate gradually to direct sunlight to avoid scorching; protect from intense afternoon sun in hot climates; adjust placement based on seasonal light changes.

Warning Signs: Yellowing leaves (overwatering or poor drainage), stunted growth (nutrient deficiency or compacted soil), or wilting (underwatering or root issues).

Care Requirements

Care Difficulty
easy

moderate

Sunlight

partial shade to full sun

Morning sun is ideal; provide shade during peak heat; rotate plant for even growth.

Watering

every 7–10 days during active growth, reduce in winter

Water deeply to encourage root growth; avoid overwatering, especially in winter; ensure good drainage to prevent waterlogging.

Soil

fertile, moist, well-drained loam

pH: Slightly acidic to neutral (pH 6.0–7.0).

Ensure good drainage; enrich with organic matter; maintain consistent moisture.

Temperature

Prefers cool to moderate temperatures (60–75°F or 15–24°C); tolerates mild frosts but may struggle in extreme heat.

Protect from frost; avoid sudden temperature fluctuations; maintain consistent moderate temperatures.

Fertilizing

every 4–6 weeks during spring and summer

Fertilize lightly; avoid over-fertilization; apply before new growth appears.

Propagation

Methods

Division or stem cuttings; division is the most reliable method for established plants.

Step-by-Step Propagation Guide
  1. Divide clumps into sections with roots.
  2. For cuttings, take 4–6 inch stems, remove lower leaves, and plant in moist medium.

Best Time: Early spring or fall when the plant is not in active bloom.

Environment

Warm, humid conditions with indirect light; protect from direct sun and drafts.

Medium

Well-draining soil mix with added perlite or sand; can also be propagated in water for stem cuttings.

Hormone

Optional but recommended for stem cuttings to encourage root development.

Timeline

Division: immediate establishment; stem cuttings: roots in 3–6 weeks, full establishment in 2–3 months.

Tools Needed

Sharp knife or pruners, rooting hormone (optional), pots, well-draining soil mix.

Quick Tips

Divide every 3–4 years to maintain vigor; use clean tools to prevent disease.

Pruning & Repotting

Pruning Guide
Method

Deadhead by cutting just above a leaf node; trim back stems to encourage bushier growth.

Pruning Plan

Remove spent flowers to encourage reblooming; trim back leggy growth to maintain shape; divide clumps every few years to rejuvenate.

Tools

Hand pruners, clean knife, gloves.

Checklist

Remove dead or damaged growth; deadhead spent flowers; trim to shape; clean tools after use.

Repotting Guide
Best Season

Early spring before new growth begins.

Pot Size

One size larger pot (e.g., +2 inches in diameter); ensure good drainage.

Method

Remove plant gently, trim roots if necessary, place in a slightly larger pot with fresh soil, water lightly.

Suggestions

Repot every 2–3 years or when the plant becomes root-bound; beneficial for container-grown plants to maintain vigor.

Checklist

Choose appropriate pot size; use fresh soil mix; trim roots if crowded; water after repotting.

Advanced Care Tips

Watering Mastery
Watering Checklist

Check soil moisture before watering; water deeply; ensure drainage; adjust frequency seasonally.

How to Apply Water Properly

Water at the base of the plant, targeting the root zone; apply until the soil is moist but not saturated; water early in the morning to minimize evaporation.

Pro Tip: Use a watering can with a narrow spout to direct water precisely to the roots, avoiding foliage.
Watering Schedule Tips

Water moderately during spring and summer, allowing soil to dry slightly between waterings; reduce frequency in fall and winter to prevent root rot.

Soil Improvement

Add compost or well-rotted manure to enhance fertility; mix in perlite or sand for better drainage.

Temperature Stress Management
Signs of Temperature Issues

Wilting, yellowing leaves, or stunted growth in excessive heat; leaf drop or browning in cold stress.

Cold Stress

Low temperatures can slow growth and cause leaf discoloration; prolonged cold may damage roots or lead to dieback.

Solution: Provide winter protection with mulch; move potted plants to a sheltered location; avoid overwatering in cold conditions.

Hot Stress

Excessive heat can cause wilting, leaf scorch, or reduced flowering; may go dormant in extreme heat.

Solution: Provide shade during peak heat; increase watering frequency; use mulch to retain soil moisture.

Fertilizing Guide
Fertilizing Checklist

Use balanced fertilizer; apply in spring; avoid late-season feeding.

Fertilizing Method

Use a balanced, slow-release fertilizer in early spring; avoid high-nitrogen formulas; reduce or stop fertilizing in late summer and fall.

Common Problems & Solutions

Yellowing leaves in Geum urbanum may indicate nutrient deficiencies, such as nitrogen or iron, or be a sign of water stress, either from overwatering or drought. It can also result from pest infestations or diseases affecting the plant's vascular system.

Wilting in Geum urbanum is often a response to water stress, either due to insufficient watering or root issues like root rot caused by overwatering or soil-borne pathogens. It can also occur as a result of severe pest infestations or environmental stress.

Leaf spots on Geum urbanum are typically caused by fungal or bacterial pathogens, leading to unsightly lesions on the foliage. Severe infections can cause defoliation, reduced photosynthesis, and weakened plant vigour.

Rotting in Geum urbanum, particularly root or crown rot, is commonly caused by fungal pathogens such as Fusarium or Phytophthora, often exacerbated by overwatering or poorly drained soil. This can lead to plant decline and death if not addressed promptly.

Toxicity Warning

Cats
Slightly Toxic

Cats may experience mild gastrointestinal distress or anticoagulant effects if they ingest significant amounts of Geum urbanum. The plant is not highly toxic but should be consumed in moderation.

⚠️ Symptoms:
vomiting diarrhea lethargy
🌿 Toxic Parts:
roots leaves
⚡ Toxic If:

if eaten in large quantities

Keep cats from consuming large amounts; consult a veterinarian if symptoms occur.
Dogs
Slightly Toxic

Similar to humans, dogs may experience gastrointestinal upset or mild anticoagulant effects if they ingest large amounts of Geum urbanum. The plant is not highly toxic but can cause discomfort.

⚠️ Symptoms:
vomiting diarrhea lethargy
🌿 Toxic Parts:
roots leaves
⚡ Toxic If:

if eaten in large quantities

Monitor dogs if they consume the plant; seek veterinary attention if symptoms persist.
Humans
Slightly Toxic

Geum urbanum contains coumarins, which can have anticoagulant effects when ingested in significant amounts. The plant is generally considered safe in small quantities but can cause adverse effects if consumed excessively.

⚠️ Symptoms:
nausea vomiting diarrhea blood thinning
🌿 Toxic Parts:
roots leaves
⚡ Toxic If:

if eaten in large quantities

Consume only in moderation; avoid large quantities, especially if taking blood-thinning medications.
Important: Keep this plant out of reach of children and pets. If ingestion occurs, contact poison control or veterinary services immediately.

Frequently Asked Questions

Q: Is Wood Avens edible?

A: The roots have a peppery taste and can be used as a substitute for cloves or ginger, but consumption should be moderate due to mild toxicity.

Q: Does Wood Avens attract wildlife?

A: Yes, it attracts bees, butterflies, and other pollinators with its bright yellow flowers.

Q: Is Wood Avens invasive?

A: It can spread aggressively in gardens and is often considered a weed in cultivated areas.

Quick Reference
Family: Rosaceae
Care: easy
Light: partial shade to full sun
Water: every 7–10 days during activ
Suitable For: ["beginners","busy people (low maintenance)","wildlife supporters (attracts bees, butterflies, birds)"]
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