Biostimulants Explained: What They Do and Don't Do

Biostimulants are natural substances that improve a plant's nutrient use, stress tolerance, and growth — without being direct nutrients or pesticides. Botanical biostimulants contain plant extracts rich in natural active compounds, amino acids, and bio-compatible molecules.

What they do

• •Improve nutrient uptake and efficiency
• •Strengthen plants against heat, drought, and salinity stress
• •Support natural defence mechanisms against disease
• •Enhance root development and soil biology
• •Improve flower set, fruit quality, and shelf life

What they don't do

Biostimulants are not rescue treatments. A starving plant needs fertiliser, a diseased plant needs protection, a thirsty plant needs water. Biostimulants make each of those inputs work harder — they don't replace them.

The best results come from a prevention-led programme: apply biostimulants at stress moments — transplanting, flowering, heat waves — rather than after damage appears.