Explore the full range of hydroponic supplies at Holland Horticulture. From LED grow lights and plant nutrients to grow tents, ventilation systems, and climate control solutions — everything you need for successful indoor growing is right here. We stock trusted brands like Lumatek, Telos, Atami, Canna, and many more, with expert support and fast UK delivery.
Spider Mite SMC+ Control
Sale priceFrom £7.95
Spray Lance
Sale price£13.00
Spray Mist Bottle - 750ml
Sale price£2.50
Spray2Grow Concentrate 500ml
Sale price£50.00
Spray2Grow Spidermite 500ml
Sale price£40.00
Spreader Mat
Sale priceFrom £3.00
Square Black Saucer
Sale priceFrom £0.65
Square Plastic Pots
Sale priceFrom £0.20
Square Plastic Tray
Sale priceFrom £12.50
Stackable Drying Racks
Sale price£7.95
Straight Connectors
Sale priceFrom £2.50
Sunblaster Daisy Chain Link
Sale priceFrom £1.99
Sunblaster T5 Lamp & NanoTech Reflector
Sale price£30.00
Sunmaster Super Lumen HPS 600W
Sale price£32.55
Sunstretcher Air Cooled Tube 5"
Sale priceFrom £84.95
Super Pro E1 Fan Controller With Probe
Sale price£38.00
SuperBoost
Sale price£25.00
Supernatural Bud Blaster
Sale price£95.00
Supernova Reflector
Sale price£71.00
SuperTank Flexi Tank
Sale priceFrom £32.00
Superthrive
Sale priceFrom £15.50
Supreme Neeem 150ml Concentrate
Sale price£16.95
Sylvania Grolux Blended HPS Lamps
Sale priceFrom £18.00
Syringes
Sale priceFrom £0.50
T.A. FinalPart® (GHE Ripen)
Sale priceFrom £5.95
T.A. Fulvic (GHE Diamond Nectar)
Sale priceFrom £13.45
T.A. Humic 1L (GHE Go Diamond Black)
Sale price£21.50
T.A. Oligo Spectrum (GHE Bio Essentials)
Sale price£8.95
T.A. Pro Bloom (GHE Bio Bloom)
Sale priceFrom £13.50
T.A. Pro Roots (GHE Bio Roots)
Sale priceFrom £21.50
T.A. Protect (GHE Bio Protect)
Sale priceFrom £12.50
T.A. TriPart Gro, Bloom & Micro (GHE Flora Series)
Sale priceFrom £12.00
T.A. Urtimax (GHE Urtica) - 1L
Sale price£18.50
Temperature controller / Fan Controller Cli-Mate (16AMP)
Sale price£39.95
Temperature/Humidity Controller
Sale price£194.05
Tent Support Net
Sale price£9.99
Tent Support Scrog Net
Sale priceFrom £4.99
Terp Booster
Sale priceFrom £18.00
The Fabric Pot – Grey Round | Air-Pruning Grow Pots for Healthy Roots
Sale priceFrom £1.40
The Growers Guide Book Series
Sale price£15.99
The Stringy-Thingy – Easy Plant Support Clip for Heavy Branches
Sale price£3.65
THERMOFORGE T7, Plant Heater 1000W with AI-Powered VPD Temp Controller
Sale price£139.00
Thick Twist Plant Tie - 4.8m
Sale price£1.99
Threaded Elbow Male 16MM-16MM M.BSP
Sale price£0.85