Advanced Nutrients Bud Ignitor - Early-Flower PK Booster With Kelp
Best for: growers who want to kick-start bud site formation in the first couple of weeks after switching to a flowering light schedule.
Our thoughts
The first fortnight of flower sets the stage for everything that follows, and Bud Ignitor is built specifically for that short window rather than trying to do a job across the whole bloom phase. It's a focused, short-use additive - use it early, then move onto your regular PK booster for the rest of bloom.
Bud Ignitor is an early-flowering booster with a PK ratio of roughly 0-1-2, built around monopotassium phosphate and potassium nitrate plus Norwegian sea kelp extract. The idea is to push bud site formation hard in the first one to two weeks of the flowering phase, when the plant is establishing how many flowering sites it's going to develop.
It's dosed at 2ml per litre and used for a short, defined window rather than the full bloom cycle - once that early window has passed, most growers switch over to a longer-use PK booster like Big Bud.
How it compares
Bud Ignitor occupies a narrower window than most PK boosters, which is the main way it differs from the competition.
- Compared with Canna PK 13/14, which is typically used for a short late-flower burst, Bud Ignitor is used at the opposite end - the first one to two weeks of flowering rather than the last.
- Compared with House & Garden Bud-XL, a broader bloom-phase booster, Bud Ignitor is deliberately narrow in scope, aimed purely at early bud site development.
- Compared with Advanced Nutrients' own Big Bud, which runs across the whole bloom phase, Bud Ignitor is designed to hand over to Big Bud once the first fortnight is done.
It's a specialist, short-window product - most useful if you're already running a full feed line and want to add this specific early boost.
Usage guidance
A short, defined dosing window rather than a season-long additive.
Dosing
Add at 2ml per litre with every feed for the first one to two weeks after switching to a 12/12 flowering light schedule (or as your plants naturally shift into flower).
After the early window
Move onto a full bloom-phase PK booster once the first two weeks are up - Bud Ignitor isn't intended to run the rest of the cycle.
Compatibility
Safe to use across soil, coco coir and hydroponic systems.
Technical specifications
- NPK ratio: approximately 0-1-2
- Format: liquid concentrate
- Dosage: 2ml per litre
- Use period: first 1-2 weeks of the flowering phase only
- Key ingredients: monopotassium phosphate, potassium nitrate, Norwegian sea kelp extract
- Compatible media: hydroponics, coco coir, soil
- Sizes available: 250ml, 1L and 4L
- Brand: Advanced Nutrients
Who this is for
- Growers who already run a full feed schedule and want a dedicated early-flower boost
- Anyone looking to maximise the number of bud sites a plant sets before moving into full bloom
- Growers already using other Advanced Nutrients bloom additives who want the matching early-stage product
Not a stand-alone bloom booster - it's designed to be used briefly, then handed over to a full-cycle PK product.
Our take
Bud Ignitor is a narrow, purpose-built product rather than an all-rounder, and it's honest about that - it's for the first fortnight of flower, nothing more. If you're already running a structured feed schedule, it's a sensible add for that specific window.
One we sell a lot of for growers who already know their feed schedule and want to fine-tune the early flower stage specifically.
