Yes, Seasol and PowerFeed (liquid) is taken up very effectively through foliage as well as through the soil.
Products that contains a soil wetter such as Seasol Super Soil Wetter and Conditioner, PowerFeed PRO SERIES All Purpose including Natives or PowerFeed PRO SERIES Flowers, Fruits & Citrus, are soil applications only. Please ensure that you do wash it off the foliage, to prevent burning.
750mL Seasol Pots & Planters and PowerFeed Pots & Planters trigger spray and 1.25 Lt PowerFeed Indoor and Potted Plants trigger spray are highly concentrated products, so please only apply to the soil.
CAUTION: Application is not recommended on days that may exceed 25° degrees.