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Sweet Woodruff

Galium odoratum
Also known as: Wild Baby's Breath, Master of the Wood, Sweet-Scented Bedstraw

Sweet Woodruff is a herb in the Rubiaceae family. It grows best in part shade to full shade with medium to wet moisture, and is listed for USDA zones 4-8. Plants reach harvest about 90–120 days after planting and sit about 6 inches apart.

Varieties

1 from Seeds Now · sorted by days to maturity
  • Sweet Woodruff90–120 days

    prefers part-to-full shade; intolerant of heat/full sun

    Sweet Woodruff (Botanical name: Galium odoratum) also called Sweet-Scented Bedstraw, is a fast-growing, mat-forming herb and ground cover with dark green leaves and small, white, waxy, star-shaped flowers that bloom in spring. When crushed or cut, and especially dried, it has a grassy vanilla fragrance. Prefers partial to full shade, even under a Black Walnut tree. Add the leaves to fruit salads, jellies, and herbal teas, and use the flowers as an adorable and edible garnish. Reseeding and shallow runner roots enable it to spread easily. Grassy vanilla fragrance Culinary and medicinal Attracts bees, butterflies, and other pollinators As a companion plant, it attracts all sorts of friendly pollinators to the garden. As a medicinal herb, Sweet Woodruff has been used internally to treat congestion, insomnia, migraine headaches, nerve pain, and water retention, and externally to treat burns, wounds, and swelling. ⚠️ Contains naturally occurring coumarin and should not be ingested in large quantities if you are taking medication for circulatory disorders or are pregnant. ⚠️ Medicinal properties are presented as information only, and are not a recommendation or prescription for use. Consult a medical professional before using any herb medicinally.

    Growing notes: Botanical name: Galium odoratum|Life cycle: Herbaceous perennial|Planting season: Spring, fall, winter|Days to maturity: 90-120 days|Depth to plant seeds: 1/4" deep|Days to germinate (sprout): 10-200 days|Germination soil temps: 60F-70F|Spacing between plants: 8"-12" apart|Spacing between rows: 18"-24" apart|# of plants per sq. ft.: Appx. 1 plant per sq. ft|Soil types: Clay, sandy, loamy, rich, moist, well-drained|Soil pH: 4.3-8.3|Sun needs: Full shade, part shade|Water needs: Average|Cold stratify: Yes|Frost tolerant: Yes|Heat tolerant: No|Drought tolerant: No|Deer resistant: Yes|Culinary use: Yes|Medicinal use: Yes

    View on Seeds Now
Family
Rubiaceae
Category
Herb
Form
Shrub
Lifecycle
perennial
Zone
4-8
Height
0.5–1 ft
Spread
0.5–1 ft
Sun
Part shade to full shade

Plant spacing

4 plants per square footSquare-foot planting diagram: a 1-foot square divided into a 2-by-2 grid holding 4 sweet woodruff plants spaced 6 inches apart.
4 plants per square foot

In a square-foot bed, space sweet woodruff about 6 in apart — that fits 4 plants in each 1-foot square (2×2). Wider rows or containers space the same.

Water
Medium to wet

Plan your sweet woodruff planting

Add sweet woodruff to a free GardenDraft plan and get sow, transplant, and harvest dates computed for your ZIP code — with a drag-and-drop bed layout and reminders when it’s time to plant.

Start your free plan →

At a glance

Days to harvest
90–120 days
From transplant or sow to first harvest
Harvest style
Keep picking
Crops over several weeks
Frost tolerance
Hardy · to ~5°F
Lowest temperature the foliage usually survives

Storing & preserving

Refrigerate stems in water, or wrap in a damp towel for a few days.

  • Dry: Dehydrate or air-dry, then store airtight away from light.
  • Freeze: Freeze chopped in oil or water in ice-cube trays.

General home-preservation guidance — for tested processing times and safety, follow the National Center for Home Food Preservation.

Growing timeline

When to plant and harvest sweet woodruffPlanting timeline for sweet woodruff, relative to last frost: start indoors from 10 weeks before last frost to 2 weeks before last frost; grow from 2 weeks before last frost to 11 weeks after last frost; harvest from 11 weeks after last frost to 15 weeks after last frost.Start indoorsGrowHarvestLast frostTransplant
Start sweet woodruff indoors ~8 weeks before transplanting 2 weeks before last frost; first harvest 11 weeks after last frost.
Seed to transplant
42-56 days
Outdoor planting
-14 to 0 days vs frost
Propagation
Seed
Schedule anchor
Last Frost

Companion planting — with cited sources

From US/Canada cooperative-extension publications and peer-reviewed studies. Evidence-tier dots show how strongly each recommendation is backed: ●●● peer-reviewed mechanism · ●● extension consensus · traditional knowledge with a plausible mechanism.

Pairs well with (1)

  • Common LettuceEvidence tier C: Traditional practice with plausible mechanism but limited empirical replicationshade-shelter, weed-suppression

    Sweet woodruff is a low shade-tolerant groundcover used as a living mulch in shaded corners; it suppresses weeds but spreads by runners, so contain it at shaded bed margins rather than among heavy feeders.

    Source: S7

Sources cited

S7
University of Minnesota Extension

Care & troubleshooting

No curated care & troubleshooting advice for sweet woodruff yet. Our extension-sourced library currently focuses on common edible crops; we're expanding it over time.