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65 products

Showing 1 - 48 of 65 products

Showing 1 - 48 of 65 products
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Canna brand fertilizer bottles on a white backgroundA 250ml bottle of CannaZym
CannaZym
Sale priceFrom £7.95
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Two bottles of Advanced Nutrients Piranha Liquid, one smaller and one larger, with labels and product information.250ml Bottle of Advanced Nutrients Piranha
Advanced Nutrients Piranha Liquid
Sale priceFrom £19.50
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Spider Mite SMC+ ControlSpider Mite SMC+ Control
Spider Mite SMC+ Control
Sale priceFrom £7.95
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Save up to £22.50
Shogun Zenzym is different size bottlesShogun zenzym 250ml bottle
Shogun Fertilisers Zenzym
Sale priceFrom £7.60 Regular price£8.95
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Advanced-Nutrients-Tarantula-Liquid-250mL
Advanced Nutrients Tarantula
Sale priceFrom £19.50
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Great White - Premium MycorrhizaeGreat White - Premium Mycorrhizae
Great White - Premium Mycorrhizae
Sale priceFrom £13.99
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Lava-Lite No-GnatsLava-Lite No-Gnats
Lava-Lite No-Gnats
Sale priceFrom £8.00
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Alien Hydroponics Root Rot XAlien Hydroponics Root Rot X
Alien Hydroponics Root Rot X
Sale priceFrom £19.95
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Pyrethrum 5 EC Insecticide
Pyrethrum 5EC
Sale price£50.00
PMT Powdery Mildrew Treatment
Grow Genius Mono Silicic
Grow Genius Mono Silicic
Sale priceFrom £22.50
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Mammoth P - Microbial InoculantMammoth P Enzyme
Mammoth P - Microbial Inoculant
Sale priceFrom £49.99
Orca Liquid MycorrhizaeOrca Liquid Mycorrhizae
Orca Liquid Mycorrhizae
Sale priceFrom £10.95
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Growth Technology Liquid Oxygen
Growth Technology Liquid Oxygen
Sale priceFrom £4.50
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Advanced-Nutrients-Voodoo-Juice-1Advanced-Nutrients-Voodoo-Juice-2
Advanced Nutrients Voodoo Juice
Sale priceFrom £61.50
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DutchPro Multi TotalDutchPro Multi Total
DutchPro Multi Total
Sale priceFrom £11.00
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Advanced-Nutrients-Sensizym-1Advanced Nutrients Sensizym
Advanced Nutrients Sensizym
Sale priceFrom £10.50
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Guard'N'Aid Insect Catcher 5 Pack
Lava-Lite No-Slugs 2
Lava-Lite No-Slugs
Sale priceFrom £5.00
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Silver Bullet Roots
Silver Bullet Roots
Sale priceFrom £24.95
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RAM Bug Barrier
RAM Bug Barrier
Sale priceFrom £4.99
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T.A. Protect (GHE Bio Protect)
T.A. Protect (GHE Bio Protect)
Sale priceFrom £12.95
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Psycho MycoPsycho Myco
Psycho Myco
Sale priceFrom £12.00
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Dynomyco™ Mycorrhizal InoculantsDynomyco™ Mycorrhizal Inoculants
Dynomyco™ Mycorrhizal Inoculants
Sale priceFrom £17.50
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Insecto Smoke BombInsecto Smoke Bomb
Insecto Smoke Bomb
Sale priceFrom £6.50
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Pocket Microscope 60 X 100
Pocket Microscope 60 X 100
Sale price£12.95
CX Hortculture TaNLiN - 20ml
CX Hortculture TaNLiN - 20ml
Sale price£23.50
Floramite 240SC 250mlFloramite 240SC 250ml
Floramite 240 SC 250ml
Sale price£280.00
Voodoo Juice® Plus
Voodoo Juice® Plus
Sale priceFrom £55.00
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Plant magic enzyme
Plant Magic Enzyme
Sale priceFrom £8.50
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Hesi Powerzyme 1L
Hesi Powerzyme 1L
Sale price£18.35
Silver Bullet Mist
Silver Bullet Mist
Sale price£12.95
Canna CureCanna Cure
Canna Cure
Sale priceFrom £12.50
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Bio Nova BN-Zym 4
Bio Nova BN-Zym
Sale priceFrom £7.60
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Biobizz Microbes Hydroponic Nutrient
BioBizz Microbes - 150g
Sale price£73.95
Plant Chemist Insect ControlPlant Chemist Insect Control
Plant Chemist Insect Control
Sale priceFrom £16.50
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Plant Magic Plus Oldtimer Granules
Plant Magic Plus Oldtimer Granules
Sale priceFrom £16.30
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Moonshine Bio Spray RTU - 1L
Moonshine Bio Spray RTU - 1L
Sale price£15.00
Guard'N'Aid for Spider Mite - 250ml
Maven Skram Mist Pest Prevention Ready to Use Liquid
Skram Mist Pest Prevention 1L
Sale price£18.00
Psycho Myco Mr Mighty 100ml
Psycho Myco Mr Mighty 100ml
Sale price£12.00
Guard'N'Aid For Thrip
Guard'N'Aid For Thrip
Sale price£25.00
Optic Foliar Atak 1L (RTU) 2
Optic Foliar Atak 1L (RTU)
Sale price£15.00
A.R.T.S Fungus Free - 250ml
A.R.T.S Fungus Free - 250ml
Sale price£40.00
Guard'N'Aid PestOFF Plus - 250ml
Athena Nutrients IPWAthena Nutrients IPW
Athena Nutrients IPW
Sale priceFrom £71.95
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Silver bottle with a blue label featuring E115 on a white backgroundElement 115
Element 115
Sale priceFrom £42.00
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Effective Disease & Pest Control for Hydroponics and Indoor Gardens

Protect your plants and keep your grow space pest-free with our full range of disease and pest control solutions at Holland Horticulture. Whether you're battling common indoor pests like fungus gnats or spider mites, or preventing outbreaks before they start, we stock trusted treatments that work fast and safely.

From targeted insecticide sprays to sticky fly traps , you’ll find everything you need to maintain a clean, healthy growing environment without harming your plants. ...

Control Pests Before They Harm Your Crop
Even the cleanest indoor grow rooms can be vulnerable to pests. That’s why prevention and early treatment are key. Our selection includes:
  • Insect Sprays – Suitable for both flowering and vegetative stages, ideal for spot treatments and full-room fogging
  • Spidermite treatment – Professional-grade solutions to eliminate mites at all life stages, including eggs
  • Fungus gnat killers – Target the larvae that live in damp grow media and prevent root damage
  • Sticky fly traps – Non-toxic pest monitoring and trapping for fungus gnats, greenfly, and whitefly
  • Biological controls – Gentle but effective treatments ideal for growers looking to avoid harsh chemicals


Stop Disease Before It Spreads Many plant diseases thrive in high-humidity grow rooms. Our range of foliar sprays, root zone cleansers, and hygiene products help control:
  • Botrytis (bud rot)
  • Powdery mildew
  • Root rot and Pythium
  • Bacterial leaf spots

Whether you need an all-purpose insect spray or a targeted fungus gnat killer, we only stock tried-and-tested products used by commercial growers.

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