Wheat seeds (1 g) were coated with 3 doses (8, 14 and 20 mu L) of formulation contg. supercrit. CO2 extract from Spirulina sp. or Baltic seaweeds. The treated seeds were cultivated on cotton base for the next 11 days in nineplicate of each sample. The fresh sprout mass, sprout heights and root lengths were detd. and compared with control samples. The best results of the sprout growth were achieved for seeds coated with 8 mu L of Spirulina sp. formulation. The coating resulted in increasing the mass yield and the sprout height by approx. 13 and 7%, resp. Baltic seaweeds contg. formulation improved the root development.