Essentials PLUS Silicon – Silica Supplement for Plants

Tougher Cell Walls, Stronger Stems, Healthier Plants

Essentials PLUS Silicon is a highly concentrated, easily soluble potassium silicate additive – the form of silicon plants take up most readily. With 6% soluble silica (SiO₂) at a dose of just 1ml per litre, it strengthens cell walls for sturdier plants with thicker roots, better drought tolerance and more resistance to pests and disease. Use it alongside your main nutrients in any system or growing medium, right through the grow.

Key Benefits

• Stronger cell walls – toughens stems and branches so they carry heavy flowers and fruit
• Thicker roots – supports bigger, more robust plants
• Pest and disease resistance – tougher tissue is harder for insects and pathogens to attack
• Drought tolerance – plants handle dry spells and hot days better
• Supports photosynthesis – boosts CO₂ absorption and chlorophyll production
• Economical – 1ml per litre through the whole cycle

Weak Stems and Drooping Branches?

Fast indoor growth under strong lights can outpace a plant's structure. Stems stay thin, branches bend under the weight of fruit and flowers, and soft tissue is an easy target for pests and disease. Silicon is laid down in the cell walls, adding the mechanical strength that nitrogen-driven growth alone does not provide. A steady supply builds sturdier plants that hold themselves up, cope better with heat and dry conditions, and put their energy into yield rather than repair.

How to Use

• All systems and media: 1ml per litre alongside your main nutrients
• Stage: throughout the plant's life cycle, from vegetative growth through flowering
• Mixing: add Silicon to the water first and stir well before adding base nutrients
• pH: silicon is very alkaline – check the solution and bring it back to pH 5.8 – 6.5

Technical Specifications