Dr.Soil Biostimulator for root stimulation, 1 litre spray bottle

Dr.Soil Plant Booster — Immunity Strengthening Biostimulant, Ready to Use, 1 L

A ready-to-use foliar biostimulant formulated from enzymatically hydrolysed plant amino acids, fulvic acids, and humic acids — designed to restore and strengthen the immune function of plants that have experienced stress, improving their resistance to external pressures of all kinds, accelerating adaptation to new environments, and significantly enhancing their capacity to absorb nutrients. No overdose risk. Effective year-round on all container plants and garden flowers.

How It Is Formulated

Plant Booster uses the same three-component organic acid and amino acid framework as Leaf Booster, but formulated at concentrations and in a combination specifically calibrated for systemic immunity restoration rather than primarily targeted leaf regeneration. The difference is one of physiological emphasis: where Leaf Booster prioritises new leaf growth and colour restoration, Plant Booster prioritises the whole-plant immune and adaptive responses that determine long-term resilience.

Enzymatically hydrolysed plant amino acids (CAS 9015-54-7) — the “enzymatically hydrolysed” designation is significant. Enzymatic hydrolysis (as opposed to acid hydrolysis) produces a more complete and biologically intact amino acid profile, preserving the L-form amino acids that plants can use directly in protein synthesis and in signalling pathways. L-amino acids are precursors to the plant hormones and secondary metabolites that mediate stress responses: L-phenylalanine is the precursor of phenylpropanoids and lignins that strengthen cell walls; L-tryptophan is the precursor of indole-3-acetic acid (auxin); L-methionine is the precursor of ethylene, the stress hormone that triggers systemic defence responses. Delivering a full L-amino acid profile directly to plant tissue provides the molecular substrate for the entire cascade of immune and adaptive responses simultaneously.

Fulvic acids (CAS 479-66-3) — the membrane-permeable organic acids that carry the amino acid components directly into plant cells, bypassing the need for active transport proteins that may be under-expressed in stressed plants. In addition to their carrier function, fulvic acids chelate the trace elements already present in plant tissue and improve their mobility within the plant — ensuring that the plant’s existing mineral reserves are redistributed to where they are most needed during recovery.

Humic acids (CAS 1415-93-6) — the larger organic acid fraction that stimulates cytokinin and auxin biosynthesis in plant cells, activating the growth regulator pathways that are suppressed under stress conditions. Humic acids also improve the soil biology around roots when the spray drains to the soil surface, building the rhizosphere conditions that support long-term plant vigour.

How It Works

Plant Booster works at the level of the plant’s systemic immune and adaptive systems rather than at any single organ or symptom:

• Whole-plant structural resilience — L-amino acid precursors of lignin and cell wall reinforcement compounds enable the plant to rebuild structural integrity in all tissues simultaneously; the entire plant becomes physically more resistant to external stresses of any origin
• Improved adaptation to new environments — after transplanting, relocation, or substrate change, the plant must recalibrate its water regulation, hormone signalling, and root-to-shoot communication; the amino acid and humic acid content of Plant Booster supports this recalibration, reducing the duration and severity of transplant shock
• Enhanced nutrient absorption capacity — stressed plants often have reduced root function and suppressed active transport proteins; the fulvic acid component improves nutrient uptake both through the leaf surface and through the root zone as spray solution reaches the soil, rebuilding the nutritional capacity that stress has compromised
• Reactivation of suppressed growth pathways — stress suppresses the cytokinin and auxin signalling that drives normal growth; humic acids restore these pathways, allowing the plant to resume active development rather than remaining in the reduced-metabolism stress state

Plants and Their Needs

Plant Booster is designed for all container and garden plants across their full growth cycle: all types of houseplants, container flowers, and garden flowers. It is the foundational biostimulant in the Dr.Soil range — the product to reach for whenever a plant needs restoration rather than targeted treatment of a specific symptom.

When Plant Booster Is Most Valuable

• After transplanting or repotting — root disturbance is one of the most common and most damaging plant stresses; applying Plant Booster immediately after transplanting dramatically reduces recovery time and the wilting, drooping, and leaf loss associated with transplant shock
• After relocation — moving a plant to a new position in the home, to a different light level, or outdoors for summer stresses the plant through changes in light, humidity, temperature, and air movement; Plant Booster supports rapid adaptation to the new conditions
• After drought or overwatering — both extremes cause root damage that compromises the plant’s ability to absorb water and nutrients; Plant Booster applied during the recovery period supports the restoration of normal physiology whilst the root system repairs
• After pest or disease treatment — treatment stresses even as it cures; applying Plant Booster after addressing an infestation or infection accelerates the recovery of full immune function
• As a regular seasonal boost — applied at the start of spring and again in early autumn, Plant Booster prepares plants for the demands of the active growing season and the reduced-light winter months respectively

How to Use

Plant Booster is ready to use directly from the bottle — no dilution required. Shake well before use. Apply by foliar spray directly onto leaves and stems. Also spray periodically around the base of the plant directly onto the soil surface to support root zone biology and build rhizosphere conditions. Can be used year-round without restriction.

The solution does not attack plant cells in any way — there is no risk of overdose, no phytotoxicity, and no restriction on application frequency.

The 10 ml Single-Dose Format

Plant Booster is also available in a 10 ml single-dose sachet using the V-Shape packaging system — a precision format designed for exact, waste-free dosing. Each 10 ml sachet mixes with exactly 1 litre of water. The V-Shape design ensures complete emptying without waste. Ideal for immediate post-transplant treatment, for targeted individual plant recovery, or for trial use.

Precautions

Plant Booster is classified as a plant biostimulant (CFP 6A) under EU Regulation (EU) 2019/1009. It is not classified as hazardous. All ingredients are of plant origin. Shake well before use. Do not exceed the application dose. Store in original packaging at 5–20°C away from direct sunlight and out of reach of children. Wash hands after use. Do not consume. Do not allow to enter drains or watercourses.

Dr.Soil Plant Booster — Immunity Strengthening Biostimulant  ·  Net volume: 1 litre  ·  Ready to use  ·  pH 5.5  ·  Active components: enzymatically hydrolysed plant amino acids, fulvic acids, humic acids  ·  No synthetic chemicals  ·  No overdose risk  ·  Year-round use  ·  All container and garden plants  ·    Also available: 10 ml V-Shape single dose