Precision nutrition
for growers who don’t guess.
Concentrated biostimulants engineered to trigger a specific plant response — root development, transition, terpene expression — used alongside your base program, not instead of it.
1Roots
2Pre
3Ultra
4Phat
5Ooze
6FinalThis isn’t a six-bottle brand.
The Essential Mix gets a program started. Tap a category to see what solves the rest.
The six-product core system, staged to the plant’s lifecycle — Roots, Pre, Ultra, Phat, Ooze, Final. Each one is timed to a specific job: root development, then compact structure, a faster veg-to-flower transition, flower size, terpene and oil production, and finally weight and finish at harvest. This is the sequence every Bloom program is built around — start here, add the rest as your grow calls for it.
Your foundation feed — chelated base nutrients built for high nutrient availability in hydro, coco or soil. Grow carries structure through veg, Flower drives fruit and flower development through bloom, and Euro is the simplified all-in-one line for growers who’d rather run one base from clone to finish. Every additive in the range is designed to layer on top of one of these three.
Thirteen products built around one idea: feed the biology, and the biology feeds the plant. Kelp, humic acid and marine trace minerals build a root zone that can actually absorb what you’re feeding it, while the full Roots-through-Final lifecycle stack and natural-sugar tonics keep microbial activity high from clone to harvest. If your program leans organic — or you just want the biology behind your feed schedule to be doing its job — this is the range that supports it.
Nine products, cross-selected from across the range, for one job: build a stronger plant before it ever hits flower. Roots and Pre lock in root mass and compact structure early; Cal-Mag, Sea Minerals and Silica close the micronutrient and cell-wall gaps most base programs leave open; Seafuel, Seaweed and Humate keep the root-zone biology fed so everything else actually gets absorbed.
Five products built for one job: bigger, denser, better-finished flowers. Phat and Ooze drive flower size and terpene production through mid-bloom; Ultra shortens the stretch coming out of veg so energy goes into structure, not height; Final locks in weight and finish over the last two weeks; Silica reinforces cell walls so heavier flowers don’t snap their own stems under the extra weight.
The inputs that catch what a standard feed schedule misses. Seafuel and Seaweed keep plants resilient through stress and transplant shock; Sea Minerals fills in the full trace-mineral profile most soils and reservoirs run short on; Organic Sweet feeds root-zone biology and adds mass to fruit; Silica fortifies cell walls against pests and environmental stress.
Two foliar sprays, applied straight to the leaf for the fastest response in the range. Groigen accelerates branch and leaf development during clone and veg; Florigen promotes flower development and uniformity once you’ve flipped to bloom. Both work in hours, not days.
OrganiShield — our OMRI-listed organic insecticide and miticide, made from 100% food-grade ingredients. It kills spider mites, aphids, whiteflies and other soft-bodied pests on contact and disrupts their reproduction, with no harsh chemical residue and no restriction on spraying lights-on or lights-off. Sized from a 16 oz bottle for a single tent up to a 5-gallon concentrate for commercial rooms.
Built for how you grow
Same eight-category toolkit, three very different environments. Pick yours to see the right feed schedule and system from the start.
Cannabis & Hydro
Run-to-waste and recirculating systems, tuned for fast cycles and tight tolerances.
Living Soil
Biology-first feeding that works with your soil’s microbial life, not against it.
Floriculture & Ornamental
Bloom quality, stem strength and shelf life for cut flower and ornamental production.
The Essential Mix — six triggers, nothing wasted.
One of eight categories, and the one every program builds on. Most brands run high doses for weeks at a time — ours are used in concentrated amounts, only at the stage where they matter.
Roots
Explosive root development early in the cycle.
Pre
Compact growth, more flowering sites.
Ultra
Faster, cleaner veg-to-flower transition.
Phat
Increased flower size and density.
Ooze
Enhanced terpenes, oils and aroma.
Final
Final weight and finish at harvest.
Used at the right time, in the right amount — that’s the entire premise of the range. See the Essential Mix →
Natural farming, concentrated.
Compost teas. Kelp brews. Mineral amendments. Growers have been making these themselves for generations — we spent 26 years in Australia working out how to concentrate and stabilise them, sustainably sourced, so you don’t have to brew a thing.
Sea minerals and calcium-magnesium, feeding the plant the way mineral-rich soil already does.
Fish and kelp hydrolysates that trigger the same responses natural growers chase with a compost tea.
Organic humates that help a plant actually take up what it’s fed — not just what’s sitting in the root zone.
None of this replaces your base nutrients — it fills the gaps most base programs leave, the same way it always has for growers doing it the slow way. We just bottled it.
What serious growers say
Real photos and quotes, straight from growers’ own DMs.
See what real growers are saying
Unfiltered photos and results straight from verified growers’ own DMs — tap through to browse the full wall of reviews.
View Grower Reviews →Dial it in before you mix a drop
Nutrient Calculator
Adaptive dosing across Basic, Intermediate and Deluxe tiers, for soil, run-to-waste or recirculating systems.
Open CalculatorFeed Schedules
Printable charts by system and grower level, built from the same data as the calculator.
View Feed SchedulesProducts selected to work together
Not clearance — combinations our R&D team pairs deliberately for a specific outcome.
Soil Health & Minerals
Even the best living soil eventually runs short on trace minerals. Sea Minerals restores a full ocean-derived mineral profile; Humate helps your plants actually take up what’s there.
Flower Quality & Terpenes
PHAT drives carbs and phosphorus straight into flowers for size and density; Ooze pushes essential oil and terpene production — the gap between a good harvest and an exceptional one.
Grower Starter Pack
Everything a new program needs to get going: Euro A+B base nutrients plus Humate, PK and SWTNR concentrates — at a limited-time 50% off.
Eight categories, each with its own world.
Essential Mix
Roots, Pre, Ultra, Phat, Ooze, Final — the six-stage core.
Base Nutrients
Grow, Flower and Euro base lines.
Organic Enhancers
Marine and microbial inputs for soil and root biology.
Grow Enhancers
Structural, vegetative-stage support for a stronger frame.
Flower Enhancers
Bloom-stage triggers for size, density and finish.
Plant Health
Cal-Mag, sea minerals and silica — the gaps most programs miss.
Foliar Enhancers
Direct-to-leaf application for a fast, targeted response.
Organishield
Plant protection that fits a sustainably-sourced program.
26 years of Australian formulation work
Bloom Yellow Bottles has been developed and refined in Australia for over 26 years, used by hobby growers and commercial operations alike. Products are designed to prepare the plant for maximum nutrient uptake — not to replace the base program you already trust.