Trifolium campestre Trifolium campestre is an annual herb belonging to the Fabaceae family. It is commonly named hop trefoil, field clover or low hop clover. The upper leaves are compound and alternate; the leaflets are oblong or elliptical. The flowers are yellow, hermaphrodite and grouped in hemispherical inflorescences. This herbaceous plant produces one-seeded legumes. Datasheet Common NameHop trefoil/ field clover/ low hop clover Botanical nameTrifolium campestre FamilyFabaceae Life CycleAnnualFoliageDeciduousBasic ColourYellowHeight5 -> 50 cmHabitatRocky lawns, dunes, fields and dry meadows Altitude0 - 1600 mBloom TimeMay -> September Plant TypeHerbFruit TypeLegumedifferent tolerancesTell usUsed PartsTell us Plant UsesTell us Active substancesTell us USDA Zone7 (-17), 8 (-12), 9 (-7), 10 (-1)Sun Exposurefull sunSoil pHAcidic, Alkaline, NeutralSoil MoistureDrySoil Type Sandy, Stony, RockyPropagationby seeds / by sowing, Self sowsGerminationTell us Pests/ DiseasesTell us Open Next Page To See More Photos. Trifolium campestre Trifolium campestre