Description
Green Planet Bud Booster is a soluble powder with an extremely high PK profile — approximately 0-27-27 NPK — and virtually no nitrogen. This positions it firmly as a late-flowering additive rather than a base nutrient: it’s added to an existing feeding programme to shift the nutrient ratio decisively toward phosphorus and potassium during the period of peak flower development.
Use from week 3 of flowering through to 1–2 weeks before flush, dissolving in water before adding to your nutrient solution and checking the resulting EC — at the effective dose, it raises EC noticeably and you may need to reduce your base nutrient accordingly. The 2.5kg format is economical for operations running multiple cycles. Don’t stack with other high-PK additives in the same feed — one PK booster at the correct dose is more effective than multiple overlapping products that push overall PK concentration into excess while your plants can only use a finite amount.
A near-zero nitrogen, high-PK formulation like this is a precision tool for a specific window rather than a general-purpose additive, which is why timing and dosing accuracy matter more here than with a broader-spectrum product. Introducing it before week 3 of flowering, while plants still have meaningful nitrogen demand for continued structural development, can create an imbalance the plant isn’t ready to use effectively. As a soluble powder rather than a liquid concentrate, make sure it’s fully dissolved before adding to your reservoir or feed water — undissolved powder can settle and create localised concentration spikes that liquid concentrates don’t risk in the same way. Because it’s economical at 2.5kg, it’s worth working out your actual seasonal usage before buying the largest size purely for cost-per-dose savings — powdered additives have a long shelf life if stored dry and sealed, but there’s no benefit to buying more than you’ll realistically use within a reasonable timeframe.
At a glance:
- High-PK powdered bloom additive (approx. 0-27-27 NPK)
- Use from week 3 of flowering to 1–2 weeks before flush
- Dissolve fully before adding to nutrient solution
- 2.5kg format suited to multiple cycles



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