Vitax Calcified Seaweed 2.5kg Natural soil and lawn conditioner, rich in minerals A natural organic soil and lawn conditioner that is rich in minerals and helps neutralise acid soils. Helps break down heavy soils and encourages beneficial soil micro-organisms Vitax Calcified Seaweed improves soil structure which in turn helps plants to develop stronger roots, promoting healthier and more vigorous plant growth Available in pack sizes: 2.5kg Due to geographical locations we are unable to deliver to: Isle of Wight, Isle of Man and Ireland.