The clocks have gone back and the nights are drawing in, so this is a good weekend to get your setup ready for winter. At least 15% off everything, online and in store. Anything already reduced by 15% or more is priced as marked. Everything else takes 15% off with code SCREAM15 at checkout. In our shops, sale prices are already applied, so no code is needed. The sale ends at midnight on Sunday 1 November.
Free UK delivery over £99 · Free Click & Collect · Plain, unbranded packaging · Fuss Free Returns
Featured picks
- Omega 18W Clone LED Twin Pack: £59.49 with SCREAM15, currently £69.99. Two 117cm propagation LED strips for cuttings and seedlings through winter, in a tent or on a bench.
- Grow Gadgets Temperature Controller: £21.24 with SCREAM15, usually £24.99. Plug in your heater, set a target, and it holds the temperature within 1°C.
- Vortex Thermostatic Fan Speed Controller: £29.74 with SCREAM15, usually £34.99. Slows your extraction when it's cool, so warm air isn't pulled straight out on cold nights.
- BAY6 Dual Purpose 130 Propagation Tent: £50.14 with SCREAM15, usually £58.99. A small, controllable space for cuttings and seedlings.
- Grow Tools Budget Propagator: £8.49 with SCREAM15, usually £9.99. For seedlings and cuttings on a windowsill or bench.
- Garland Work Trays: from £5.09 with SCREAM15, usually from £5.99. Heavy-duty trays for benches, windowsills and under tents.
Questions
How do I get the discount?
Online, enter SCREAM15 at checkout. In our shops there's no code: the discount is already applied at the till.
What about items already on sale?
If something is already reduced by 15% or more, it's priced as marked. Everything else takes 15% off.
Can I use another code too?
No. SCREAM15 can't be combined with any other code or offer.
How does delivery work?
Free UK delivery on orders over £99, in plain, unbranded packaging. Next-day delivery is available as a paid option. Or order online and use free Click & Collect.
Not sure what to buy?
Call 0333 003 2295, use live chat, or ask in store. Tell us about your space and we'll suggest what fits, including when the smaller option is the better buy.
Terms
At least 15% off everything: products already reduced by 15% or more are sold at their marked price, and all other products are 15% off (online with code SCREAM15; in store, already applied at the till). Valid online at growell.co.uk from 10am Friday 30 October to 11.59pm Sunday 1 November 2026, and in GroWell shops until close of trading on Sunday 1 November 2026. SCREAM15 cannot be used on gift cards or delivery charges, and cannot be combined with any other code or offer. Subject to availability.
