The effect of foliar applications of a commercially available seaweed concentrate (Kelpak 66) on the growth of swiss chard plants (Beta vulgaris L.) was investigated. Kelpak 66 at a dilution of 1:500 improved the growth of swiss chard significantly irrespective of whether it was applied on its own as a foliar spray or together with soil applications of a chemical fertilizer. The levels of cytokinin-like activity in the plants was found to be inversely related to growth. Plants treated with seaweed concentrate and liquid fertilizer had the lowest cytokinin activity in both the roots and the leaves, however, these plants grew significantly better than the controls or those which were sprayed with seaweed concentrate only. The significance of the findings is discussed.