|Scientific Name||Veronica persica Poir.|
|Common Names||English: Persian speedwell; German: Persischer Ehrenpreis; French: Véronique de Perse, véronique commune|
|Description||Annual, seed-propagated weed that forms many shoots if the soil is well-supplied with nitrogen. It originates from Asia.|
Foliage leaves regular crenate with rounded lobes.
Basically bigger flowers than ivy-leaved speedwell.
Spatulate to triangular, rounded at the top, short-petiolate.
Usually in groups, creeping to ascending, single or ramified, ruffly haired, 40 cm (15.75 inch).
Broad-ovate, nearly cordate at the base, regularly notched at the margin with rounded lobelets.
Sparse projecting hairs.
Large (8-12 mm; 0.3 - 0.47 inch), sky-blue, with yellowish throat, single in the axils on long peduncles.
All year round.
Fruits flattened, pubescent-reticulate, 7 mm (0.27 inch) broad, sharply keeled. 4-8 seeds in each cell.
Cup-shaped, rough, ± 2 mm (0.078 inch).
Germination occurs inspring, under good conditions all year round and depends on light.
Viability of Seeds
Humus-rich, nutrient-rich loams. Nitrogen consumer.
Additional Crop Information
Widespread in cereals, especially summer cereals, row crops, vegetable crops, fruit-growing, winegrowing and horticulture.
Veronica persica requires sufficient open space for establishment during emergence and tillering of cereals and during initial development of row crops. The weed competes for nutrients but significant yield losses occur only at densities higher than 25 plants/m² (2.3/sq. ft.).
Useful non-chemical contribution to Integrated Weed Management
Surface cultivation in spring.
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