Sweet Trefoil
Trigonella caerulea
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Pl. 05FC — Trigonella caerulea
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IOverview
Overview
Sweet Trefoil, scientifically known as Trigonella caerulea, is an annual herb native to Greece. This plant thrives in full sun and prefers moist conditions with light (sandy), medium, or heavy (clay) soil. Growing up to 0.6 meters tall, it is both edible and medicinal, making it a versatile addition to gardens and landscapes. The leaves are the primary edible part used for culinary purposes. Sweet Trefoil has been documented for its medicinal uses as well, contributing to its value in traditional practices. Its distinctive features include its light requirement and adaptability to various soil types, making it an interesting choice for gardeners interested in both ornamental and practical benefits.
Quick answers
What is Sweet Trefoil?
Sweet Trefoil, scientifically known as Trigonella caerulea, is an annual herb native to Greece. This plant thrives in full sun and prefers moist conditions with light (sandy), medium, or heavy (clay) soil. Growing up to 0.
IV·bMixology suggestions
1 draft
Mixology suggestions
1 draftEditorial drafts. These pairings are AI-suggested from traditional herbal lore. Always verify with a qualified herbalist before brewing.
Digestive Harmony
digestiontincture
Historically used for digestive issues.
Growingconditions · propagation · uses
VCultivation
Cultivation
Sweet Trefoil thrives in full sun and prefers moist soil that is light (sandy), medium, or heavy (clay). This annual plant grows up to 0.6 meters tall and can be propagated from seeds. It is native to Greece and is hardy in temperate regions. Ensure the soil remains consistently moist for best growth, as it requires regular watering.
Light
Full sun
Water
Moist
Soil
Light (sandy), Medium, Heavy (clay)
Life cycle
Annual
Habit
Forb/herb
Mature size
0.6 m tall
For first-time growers
How to grow Sweet Trefoil for the first time
8steps
Sweet Trefoil is a straightforward annual herb for beginners to grow.
- 1
What you'll need
Seeds, small pots or garden space, potting soil.
- 2
Best time to plant
Plant in spring after the last frost, when temperatures are mild.
- 3
Soil and container prep
Use well-draining soil with a mix of light (sandy), medium, or heavy clay soils. Ensure containers have drainage holes.
- 4
Sowing or transplanting
Start seeds indoors 4-6 weeks before the last frost date, then transplant outdoors once seedlings are strong and weather is warm.
- 5
First two weeks
Water regularly to keep soil moist but not waterlogged. Place in a sunny spot to encourage growth.
- 6
Ongoing care
Provide full sun exposure and regular watering, especially during dry spells. Pinch back stems to promote bushy growth.
- 7
Harvest or pruning
Prune regularly to maintain size and shape, cutting back by one-third at a time. Leaves can be harvested throughout the growing season.
- 8
Common mistakes
Overwatering, planting in heavy shade, neglecting regular pruning.
VIEdible & utility
Edible & utility
Edible parts:Leaves
Edible uses: Condiment, Tea
Other uses:Nitrogen fixer
Contextrange · companions · related
VIIDistribution
1 native · 19 introduced
Distribution
1 native · 19 introducedDistribution across2 continents· 1 native· 19 introduced
Europe6 regions
native (1)Greece
introduced (5)BelarusBulgariaRussiaUkraineUnited Kingdom
Asia2 regions
introduced (2)ChinaMongolia
Broader regions
introduced:Maryland, New York, Primorye, Czechoslovakia, Transcaucasus, Baltic States
IXSpecimen gallery
1 image
Specimen gallery
1 imageXI
Explore further
Companion planting
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