It is sold as an extract which you dilute with water and apply to the soil, or most effectively use as a foliar spray. The foliar spray is a fast-acting enhancer that makes the minerals, vitamins and hormones immediately available to the plant. Many plants respond within 48 hours of the initial application.
Liquid seaweed improves growth, increases yields and results in healthier, more productive plants.
Research at major universities has shown that seeds soaked in seaweed extract germinate more rapidly, have larger root mass, stronger plant growth and higher survival rate. Soaking plant roots in seaweed extract reduces transplant shock and speeds root growth. Spraying fruits and vegetables 7-10 days before harvest will increase shelf life. Liquid Seaweed Plant Food is generally mixed at a rate of 4 teaspoons per gallon of water. Liquid seaweed should be used every three weeks, or when you want to enhance what the plant is doing, such as bud set, flowering, fruit formation and transplant.