|Scientific Name||Veronica hederifolia L.|
|Common Names||English: Ivy-leaved speedwell; German: Efeublättriger Ehrenpreis, Ehrenpreis; French: Véronique à feuilles de lierre, véronique|
|Description||Hibernating, annual or hardy-annual seed weed with creeping growth and taproot, branched, light-demanding, up to 20 cm (7.87 inch) long.|
Ivy-leaved true leaves, small blue flowers, low growth.
Stems weak, prostrate to ascending, 5-40 cm (1.97 - 15.75 inch) long, branched at the base, spreading-hairy.
Long-petiolated, haired oval, notched at apex.
Prostrate, branched at the base, hairy.
Suborbicular, obcordate, 3-7 lobed with a broader terminal lobe.
Hairy, little lobed first true leaves.
Small, solitary in leaf-axils, lilac or blue, on long stalks. Calyx 4-lobed.
Capsule, flattened perpendicular to septum, generally obcordate, plump, wider than long, scarcely notched at the tip, smooth.
Seeds 1 or 2 per chamber, cup-shaped, cross-wrinkled.
Germination in early spring and autumn.
Seeds are rounded, deeply lobed, soft yellow-brown, long-petiolated, haired oval, notched at apex.
V. hederifolia responds to a brief cold period before germination (cold-germinator), and needs a flat seed bed for germination.
Viability of Seeds
More than 10 years.
200-300 seeds /plant.
Aerated, nutritive sand and loam soils.
Additional Crop Information
Also brushes and waysides.
Veronica hederifolia requires sufficient open space for establishment during emergence and tillering of winter cereals and during youth development of row crops. It competes for nutrients and significant yield loss only occurs at densities higher than 25 plants/m² (2.3/sq. ft.).
Useful non-chemical contribution to Integrated Weed Management
Mechanical weed control at early growth stages results in good control of this weed.
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