The Greenhouse Effect - Horticultural Supplies

The UK’s longest established family-run horticultural & specialist hydroponics store, based in Milton Keynes, UK. With over 20 years of trading, we offer the best knowledge, advice, and support activity for crop production.

We are fully stocked with industry-leading products including LED Grow Lights, Grow Systems, Nutrients & Additives, Grow Mediums, Fans & Ventilation, and everything you need to Grow in Your Home & more from trusted brands.

We supply everything you need to get growing under one roof!

Expert advice and feed schedules can be found on our pages or call us for the human touch.

FREE delivery on orders over £50 with Next Day Delivery available*

*Additional surcharges may apply on heavy goods & awkward items (More Info)

We are now open again on Sundays 10am-3pm.

The Greenhouse Effect

Horticultural Supplies

We are fully stocked with industry-leading products including LED Lighting, Grow Systems, Nutrients & Additives, Grow Mediums, Fans & Ventilation and everything you need to Grow in Your Home & more from trusted brands.

We are now open again on Sundays 10am-3pm.

Free Delivery

On orders over £50*

Fast Shipping

Next Day Delivery

Secure Checkout

Safe Shopping Experience

Expert Advice

20+ Years of Trading

Our reviews speak for themselves...

"First time ordering through the website as I start to build my first IKEA greenhouse cabinet to grow my aroids. I ordered a Sunblaster T5 grow light at 2:40pm, and it arrived the next day! The price for the light was the best I could find online with the price of shipping aswell. Very happy with my purchase and will recommend you to others. Thank you 😁"

"After my first visit of the year I am continually impressed with the team at Greenhouse Effect. Friendly, knowledgeable staff and great range of products. They have everything i have ever needed and the advice has really taken my growing to the next level. I will definitely be going back to upgrade some more of my setup as soon as I can!"

"Best customer service I've ever received. I realised more than 24 hours after my purchase that the item I had bought was too small. I contacted customer services to see if they could cancel the order but it already been sent out (note speedy dispatch times). However, they kindly recalled the item and gave me a full refund! I really value good customer service so will definitely use them again!"

"I can't recommend this place highly enough,I started from scratch without a clue.the products I bought are fantastic quality and durable.i would call daily and I would literally be talked through what to do with by the team.the after care you receive when dealing with ghe has blown me away. Can't speak highly enough of the team.if you want quality,experience and a great after care team you are in the right place!"

"I have being going to these guys for a few years now and can honestly say a well deserved 5 stars..... always honest when asked for advice and never try and sell you the most expensive options ... overall great stock availability, prices , premises and in general good guys ... hopefully ill be a customer of yours for many years to come…."

"I have given this shop 5 🌟🌟🌟🌟🌟 The staff (wow) the service best I have had. Disabled access not a problem easy access to everything, wheelchairs friendly. Information always available if you require it.. Keep up the great work and service guy's. Thank you"

"As a regular customer to The Greenhouse Effect I have nothing but praise for the gaff, I recently bought a full hydro system that they didn't stock but as usual they were able to accommodate me and it was ready for collection the very next day and they gave me 10% off as I used a credit card, which made it cheaper than buying it direct from the manufacturer, explain that..."

Secure Online Orders

with The Greenhouse Effect

WE OFFER FREE DELIVERY ON ORDERS OVER £50* WITH NEXT DAY DELIVERY AVAILABLE!

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10% Digital Discount

Our Top Selling Grow Systems

Guest Blog: Hot Dunstable 🌶️🌶️🌶️

Let’s Talk About Vitopod Propagators

We’re back open on Sundays!

10% Digital Discount

Our Top Selling Grow Systems

Guest Blog: Hot Dunstable 🌶️🌶️🌶️

The Greenhouse Effect - Horticultural Supplies

FREE delivery on orders over £50 with Next Day Delivery available*