High Potash plant food it is so simple to feed - just add a level teaspoon of our feed to a standard 2 gallon watering can once a week and... voila! this is what we use here on the nursery. High potash feed should be used from May to September, sent complete with full instructions. What's more can be used on all your garden plants, not just the ones we supply.

1 bag makes 100 gallons or 250 litres.