£18.27
A ready-to-use foliar biostimulant formulated from boron, plant amino acids, fulvic acids, humic acids, and macro and micro elements — designed to stimulate the development of new flowering branches, buds, and flowers, whilst extending the duration of flowering and intensifying floral fragrance. No overdose risk. Effective year-round on all flowering houseplants and garden flowers.
Flower Booster is the only formulation in the Dr.Soil biostimulant range that places boron as the lead active component — a deliberate formulation decision that reflects the fundamental role boron plays in every stage of flower development, from bud initiation through pollen germination to fruit set. This is combined with the organic acid and amino acid system that underpins the entire Dr.Soil biostimulant range, creating a product that simultaneously drives flowering physiology at the hormonal level and supports it at the nutritional level.
Boron (CAS 7440-42-8) is unique among plant micronutrients in its direct involvement in reproductive development. It is essential for the synthesis of pollen tube wall components, for the germination of pollen grains on the stigma, for the elongation of pollen tubes towards the ovule, and for the production of the boron-rhamnogalacturonan II complex that is a structural component of all cell walls in rapidly dividing tissue — including the cells of developing flower buds. Boron also regulates the transport of sugars from leaves to developing floral tissue through the phloem, determining how much photosynthate is delivered to flowers rather than retained in vegetative structures. Boron deficiency is one of the most common and most frequently unrecognised causes of poor flowering, bud drop, and reduced fragrance in ornamental plants. Delivered as a ready-to-use foliar spray, boron reaches the developing floral tissue directly without the soil chemistry interactions that can render boron unavailable in certain growing media.
Plant amino acids (CAS 65072-01-7) provide the building blocks for the biosynthesis of the aromatic compounds that give flowers their fragrance. Rose scent, jasmine fragrance, and the characteristic aromas of all scented flowers are synthesised from amino acid precursors — primarily L-phenylalanine for phenylpropanoid-derived fragrances and L-leucine for terpenoid fragrances. Delivering free amino acids directly to floral tissue by foliar spray provides the immediate substrate for fragrance synthesis in a way that soil-applied nitrogen cannot replicate with the same speed or specificity.
Fulvic acids (CAS 479-66-3) carry the boron and amino acids directly into plant cells through the leaf cuticle, ensuring rapid cellular uptake. They also support the sugar transport mechanisms in phloem loading, reinforcing the sugar delivery to flowers that boron initiates.
Humic acids (CAS 1415-93-6) stimulate cytokinin production — the class of plant hormones most directly responsible for the initiation of flower buds and the transition from vegetative to reproductive growth. They extend the retention of flowers and delay senescence (petal fall), contributing directly to the prolonged flowering duration that Flower Booster is formulated to deliver.
Macro and micro elements supply the mineral support for the entire flowering cycle, ensuring that the nutritional environment around floral development is complete and balanced throughout the application period.
Flower Booster is designed for all flowering houseplants and all flowering plants grown in pots or garden beds: roses, orchids, African violets, anthuriums, bromeliads, peace lilies, geraniums, begonias, impatiens, cyclamens, kalanchoe, hydrangeas, jasmine, gardenia, hibiscus, bougainvillea, and all other plants grown primarily for their flowers.
Flower Booster is ready to use directly from the bottle — no dilution required. Shake well before use. Apply by foliar spray directly onto leaves, stems, and developing buds. Also spray periodically around the base of the plant directly onto the soil surface. Can be used year-round without restriction.
| Plant type | Method | Frequency |
|---|---|---|
| Flowering houseplants | Foliar spray directly onto leaves and buds; also spray around the base of the stem onto the soil surface | Periodically year-round; increase to twice weekly as flowering approaches and during the bloom period |
| Garden flowers in pots or beds | Foliar spray directly onto leaves and buds; in summer and winter also spray at the base of the plant, directly onto the soil | Twice weekly (e.g. Monday and Friday) through spring and autumn; continue through summer and winter with soil-base application added |
Begin applications 2–3 weeks before the expected flowering period to ensure that boron and amino acid reserves are fully built up in floral tissue before bud development begins. The solution does not attack plant cells in any way — there is no risk of overdose.
Flower 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 to produce a ready-to-spray solution. The V-Shape design ensures complete emptying without waste. Ideal for targeted treatment of a single plant at the critical pre-flowering moment, or for trial use.
Flower Booster is not classified as hazardous. All ingredients are of plant origin or are naturally occurring mineral elements. 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 Flower Booster — Flowering Stimulation Biostimulant · Net volume: 1 litre · Ready to use · pH 6 · Active components: boron, plant amino acids, fulvic acids, humic acids, macro and micro elements · No synthetic chemicals · No overdose risk · Year-round use · All flowering plants · Also available: 10 ml V-Shape single dose



