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How to Grow Catchweed

Catchweed

Galium aparine

herb

Catchweed, also known as cleavers or goosegrass, is an annual herbaceous plant with slender, square stems covered in tiny hooked hairs that cling to clothing and fur. The plant produces small white or greenish flowers followed by burr-like seeds, and has narrow, lance-shaped leaves arranged in whorls. It has been used traditionally in herbal medicine and as a culinary herb for centuries.

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Example Catchweed timeline · Pittsburgh, PA (Zone 6b)

  1. Plant Catchweed

    Around Apr 17

    Near Pittsburgh's average last spring frost.

  2. Tend & protect

    Late spring–summer

    Watering, feeding, and pest-watch reminders.

  3. Harvest Catchweed

    Around Jun 16

    ≈ 60 days after planting

Sample dates for Pittsburgh, PA. Sign up to get exact Catchweed dates for your own zip code.

Growing Conditions

☀️
Sun: Partial shade to full sun, 4-6 hours of sunlight daily
💧
Water: Keep soil consistently moist but not waterlogged; prefers cool, damp conditions
📏
Spacing: 6-12 inches
📅
Days to maturity: 60-90 days
🌱
Planting depth: Surface sow or press lightly into soil; needs light to germinate

Soil

Type: Moist, well-draining loamy soil
pH: 6.0-7.0
Amendments:
Compost Peat moss Leaf mold

Growing Zones

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Thrives in zones 3-9; prefers cooler seasons

3a 3b 4a 4b 5a 5b 6a 6b 7a 7b 8a 8b 9a 9b

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Growth Stages

1

Germination

7-14 days

Tiny seedlings emerge with two oval cotyledons; square stems begin to appear

Keep soil moist; ensure adequate light exposure; thin seedlings to proper spacing

2

Vegetative Growth

3-4 weeks

Plant develops characteristic square, hairy stems with whorled narrow leaves; climbing and clinging habit becomes apparent

Provide consistent moisture and cool conditions; support with stakes if desired; harvest leaves as needed

3

Flowering

2-3 weeks

Small white or pale green flowers appear at leaf axils and stem tips in clusters

Continue regular watering; allow some flowers to remain for seed production if desired

4

Seed Development

2-3 weeks

Flowers are followed by small, round, bristly seed pods that stick to anything they touch

Allow seeds to mature on plant if self-seeding is desired; harvest before seeds fully dry if preventing spread

5

Harvest/End of Season

Varies with season

Plant may decline in warm weather or after frost; seeds fully mature and ready to disperse or collect

Cut and dry entire plant for herbal use; collect seeds for next season or allow natural reseeding

Companion Planting

Plan your garden →

Plant with:

Nettle Comfrey Borage Mint Chives Spring bulbs

Avoid planting near:

Tender seedlings in dry areas Plants preferring dry conditions

Common Pests

  • Spray with water; use insecticidal soap; encourage beneficial insects like ladybugs

  • Increase humidity; spray with water; use neem oil if severe

  • Ensure good air circulation; avoid overhead watering; apply sulfur or baking soda spray if needed

Uses

💊

Herbal Tea & Lymphatic Support

Medicinal

Catchweed has been traditionally used to support lymphatic system function and overall detoxification. Fresh or dried leaves are steeped into a mild tea that herbalists recommend for seasonal wellness and immune support. [source]

🍳

Spring Greens & Juice

Culinary

Young, tender catchweed leaves can be added to fresh salads, soups, and smoothies. The plant has a mild, slightly nutty flavor and is particularly popular in European spring cuisine. [source]

🏠

Natural Dye & Fiber Plant

Household

The stems contain fibers that have been traditionally used for cordage and weaving, while the entire plant can produce a yellow-green dye when processed. [source]

💊

Traditional Skin Health

Medicinal

Herbalists have long used catchweed in infusions and poultices to support skin health and address minor skin irritations. [source]

🦋

Bird Food & Habitat

Wildlife

The seeds are an important food source for birds and small wildlife, while the plant provides shelter and nesting material for beneficial insects. [source]

This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.

Harvest Tips

Harvest leaves and tender stems in the morning when they're young and tender for best flavor and nutrition. Cut plants back regularly to encourage bushier growth and prevent early flowering. The entire above-ground plant can be harvested and dried for herbal tea. Best harvested before flowers fully open. Handle carefully as stems stick to clothing and skin.

Fun Facts

  • 🌱 The name 'catchweed' comes from the plant's hooked hairs that catch on clothing, fur, and skin—so effectively that it was historically used to clean wool and comb out tangles from fleece.
  • 🌱 Catchweed has been used for over 2,000 years in traditional medicine across Europe and the Middle East, and is mentioned in ancient Greek and Roman herbals.
  • 🌱 The plant is also called 'goosegrass' because it was traditionally fed to geese to improve their health and egg production.

Gardening Terms

New to gardening? Learn about terms used in this guide:

Annual Full Sun Partial Shade
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