The GreenPlanet Massive Bloom Formulation is GreenPlanet's flagship flowering additive: an organically derived bloom formula, enhanced with microelements, used alongside your base through the flowering stage. It's one of the three bottles GreenPlanet chose for the Dual Fuel Starter Kit, and our most-ordered GreenPlanet product over the last year.
Built for the flowering stage
Massive is formulated to support flower development once flower sites are set, helping the plant move nutrients and building materials to where the crop is forming. It's organically derived, using inputs that include honeycomb, and is enhanced with the microelements flowering plants draw on.
Where it fits
Run Massive through bloom on top of your base — Dual Fuel or the HORTI line — at the rate on GreenPlanet's feed program. It pairs naturally with Rezin and PK Spike.
Full specifications
| Manufacturer | GreenPlanet Nutrients (British Columbia, Canada) — bottled in Australia under licence by WHG, Melbourne |
| Type | Organically derived flowering additive with microelements |
| Stage | Flowering |
| Dose rate | Per the Dual Fuel feeding program (PDF) |
| Sizes | 1 L · 5 L · 20 L |
| Compatibility | Dual Fuel and HORTI programs; soil, coco and hydro |
FAQ
When do I start it?
Once flower sites are established, following the weekly rates on GreenPlanet's feed program.
Is it in the Starter Kit?
Yes — the Dual Fuel Starter Kit includes 1 L.
Can I use it with PK Spike?
Yes. Follow GreenPlanet's feed chart for how and when the two run together.
Can I mix it with another brand?
We don't recommend it. GreenPlanet's feed programs are built around its own bases and additives, so results are most predictable when you stay within the range.