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‘Bud booster’ is a common retail term for flowering-stage plant nutrients. These are horticultural supplements for legal ornamentals, vegetables, fruiting plants, and flowers grown in coco coir—not a promise of a particular crop result. Coco holds and releases nutrients differently from soil, so use a product only with its label and the base-nutrient maker’s feed chart, and do not combine high-analysis additives by guesswork.
| # | Product | Price | Where to buy |
|---|---|---|---|
| 1 | Advanced Nutrients Big Bud Coco | $24-$110 | Amazon · eBay |
| 2 | CANNA PK 13/14 | $11-$124 | Amazon · eBay |
| 3 | CANNA Boost Accelerator | $34-$550 | Amazon · eBay |
| 4 | General Hydroponics Liquid KoolBloom | $16-$101 | Amazon · eBay |
| 5 | General Hydroponics KoolBloom Dry | $15-$36 | Amazon · eBay |
| 6 | FoxFarm Open Sesame | $16-$40 | Amazon · eBay |
| 7 | FoxFarm Beastie Bloomz | $32-$53 | Amazon · eBay |
| 8 | FoxFarm Cha Ching | $21-$58 | Amazon · eBay |
| 9 | House & Garden Top Shooter | $39-$71 | Amazon · eBay |
| 10 | HydroDynamics Ionic PK Boost | $16-$22 | Amazon · eBay |
The picks, in detail
Advanced Nutrients Big Bud Coco
A coco-specific flowering supplement from Advanced Nutrients; the maker identifies it as coco-coir safe and lists calcium, magnesium, iron, and a 3:1 PK ratio in the formulation.
- coco-specific formula
- 3:1 PK ratio
- calcium and magnesium listed
- Designed around coco-coir use
- Liquid format suits measured reservoir mixing
- Supplement rather than a complete base nutrient
CANNA PK 13/14
CANNA’s concentrated 0-10-11 PK additive is a distinct late-flowering supplement, sold alongside the CANNA Coco range.
- 0-10-11 analysis
- liquid concentrate
- CANNA additive
- Clearly labeled PK analysis
- Available in several bottle sizes
- Concentrated additives need label-directed timing and dilution
CANNA Boost Accelerator
A separate CANNA flowering additive, not the same product as PK 13/14, for growers who prefer to stay within one manufacturer’s nutrient system.
- liquid additive
- CANNA product line
- multiple sizes listed
- Separate option from a straight PK additive
- Available from hydroponic retailers
- Higher cost than basic PK concentrates
General Hydroponics Liquid KoolBloom
A liquid 0-10-10 flowering supplement sold for use alongside a nutrient program; General Hydroponics publishes it in CocoTek feed charts.
- 0-10-10 analysis
- liquid concentrate
- appears in CocoTek feed chart
- Liquid option for measured feeding
- Multiple container sizes
- Not a complete coco nutrient by itself
General Hydroponics KoolBloom Dry
The dry KoolBloom formula is a water-soluble 2-45-28 product, making it a different format and analysis from Liquid KoolBloom.
- 2-45-28 analysis
- water-soluble powder
- dry format
- Powder format stores compactly
- High-phosphorus analysis is plainly stated
- Must be fully dissolved and measured carefully
FoxFarm Open Sesame
FoxFarm’s water-soluble Open Sesame is a separately packaged early-flowering supplement, rather than a re-labeled container size of another FoxFarm product.
- water-soluble powder
- FoxFarm flowering supplement
- separate Open Sesame formula
- Distinct stage-oriented option
- Sold by hydroponic retailers
- Use only at the stage specified on the label
FoxFarm Beastie Bloomz
Beastie Bloomz is FoxFarm’s distinct powdered flowering supplement; it is not the same formula as Open Sesame or Cha Ching.
- water-soluble powder
- FoxFarm product
- separate flowering formula
- Genuine alternative within the FoxFarm range
- Compact dry product
- Stock and package price vary by retailer
FoxFarm Cha Ching
Cha Ching is another separately sold FoxFarm soluble flowering supplement, useful for readers comparing the brand’s different stage-oriented products.
- water-soluble powder
- FoxFarm product
- separate Cha Ching formula
- Distinct product rather than a pack-size duplicate
- Retail listings show several package options
- Not interchangeable with a complete base feed
House & Garden Top Shooter
House & Garden Top Shooter is a powdered flowering additive sold in small containers, giving coco growers a different brand and product format to compare.
- powder additive
- 250 ml package listed
- House & Garden product
- Different brand and format from liquid concentrates
- Small package can suit a trial purchase
- Follow the maker’s dilution directions rather than copying another brand’s schedule
HydroDynamics Ionic PK Boost
Ionic PK Boost is a separately sold HydroDynamics flowering additive for buyers comparing liquid PK-focused supplements.
- liquid additive
- PK-focused product
- multiple price points listed
- Liquid alternative to dry boosters
- Distinct brand and formula
- Check compatibility with the existing base-nutrient program
Buying tips
- Start with a complete coco base nutrient; a bloom or PK supplement does not replace the macro- and micronutrients supplied by the base program.
- Use the exact label and feed-chart rate for the product and water source. More concentrate is not a correction for an unmeasured reservoir.
- Keep fertilizer concentrates labeled, closed, and away from children, pets, food, and drains. Wear the protective equipment specified on the label.
As an Amazon Associate and eBay Partner, toptenpick.com earns from qualifying purchases. Prices and availability are subject to change.