Growth/Bloom Stims
Growth and bloom stimulators that work alongside a base feed: Canna Boost, Biobizz Top Max and Fish Mix, Atami Bloombastic and B'cuzz, Advanced Nutrients Big Bud and Bud Candy, GreenFuse organic stimulators, Hesi Boost, Mills C4, Vitalink Turbo Plus, Plant Magic Boost and Evolution and more.
In StockRox
£85.46
In StockSuper Boost
Super Boost - Foliar Growth Catalyst
£22.46
In StockAdvanced Nutrients
Advanced Nutrients - Bud Candy
£9.86
In StockVitalink
£17.96
In StockHydrotops
£45.45
In StockHydrotops
£41.85
In StockAdvanced Nutrients
Advanced Nutrients - Tasty Terpenes
£15.26
In StockAdvanced Nutrients
Advanced Nutrients - Bud Factor X
£26.06
In StockBAC
£20.66
In StockCX Horticulture
£20.66
In StockBuddhas Tree
£13.46
In StockCX Horticulture
£20.66
In StockAtami
£12.56
In StockBiobizz
£7.16
In StockAdvanced Nutrients
Advanced Nutrients - Carboload
£7.16
In StockNurture
£11.66
In StockAtami
£44.96
In StockAdvanced Nutrients
Advanced Nutrients - Big Bud Coco
£13.46
In StockBuddhas Tree
Buddhas Tree Advanced Meta-Boost
£13.46
In StockGreenFuse
£16.16
In StockAdvanced Nutrients
£13.46
In StockFloraMax
£45.86
In StockAtami
£20.66
In StockHesi
£8.96
About Growth/Bloom Stims
Stimulator or booster?
A PK booster adds phosphorus and potassium for a short window; the PK Boosters section covers those. A stimulator works differently: sugars, amino acids, hormones and plant extracts that push the plant to use the feed it already has. Growth stimulators such as Fish Mix, B'cuzz Growth and GreenFuse Grow build bigger, bushier plants in the vegetative weeks. Bloom stimulators such as Canna Boost, Top Max, Hesi Boost and GreenFuse Bloom run through flowering to set more flowers and finish them heavier.
The well-known names
Canna Boost is the classic bloom accelerator, used from the start of flowering to the end. Bloombastic is Atami's concentrated late-bloom stimulator, run in the last weeks. Big Bud and Bud Candy are Advanced Nutrients' bloom and carbohydrate pair. Mills C4 and Vitalink Turbo Plus are all-round flowering enhancers. Foliar stimulators such as Plant Magic Evolution and Super Boost are sprayed on in growth.
Using them
Pick one growth and one bloom stimulator rather than stacking several that do the same thing, and follow the chart for your base nutrient range.
Growers' Guides
- Advanced Nutrients Feed Chart: Sensi Grow & Bloom by WeekThe Advanced Nutrients feed chart for pH Perfect Sensi Grow and Bloom (and Sensi Coco): base and additive doses week by week in ml per litre.
- Biobizz Feed Chart 2026: All·Mix and Light·Mix SchedulesThe Biobizz feed chart week by week for Light·Mix, Coco·Mix and All·Mix: Bio·Grow, Bio·Bloom, Top·Max, Root·Juice and the boosters in ml per litre.