Everything your plants need, from windowsill to grow room — houseplant & cactus mixes, LECA, plant food and pro growing kit from the brands the experts trust.
Houseplants & Aroids 59 Cacti & Succulents 15 Propagation 34

Featured brand

Grenade Nutrients

Small bottles. Serious force.

An independent UK range of ultra-concentrated plant additives, dosed in fractions of a millilitre. One 100ml bottle treats up to 250 litres at full strength.

Explore the range

Free UK delivery on every Grenade order

Featured products

VitaLink LECA Clay Pebbles (8-20mm)
Sale

VitaLink LECA Clay Pebbles (8-20mm)

VitaLink LECA Clay Pebbles (8-20mm)
£6.26
CANNA Coco Pro Plus – Ready-to-Use Peat-Free Coco for Houseplants & DIY Mixes

CANNA Coco Pro Plus – Ready-to-Use Peat-Free Coco for Houseplants & DIY Mixes

CANNA Coco Pro Plus – Ready-to-Use Peat-Free Coco for Houseplants & DIY Mixes
£5.99
Cyclone 7" Oscillating Clip On Fan
Sale

Cyclone 7" Oscillating Clip On Fan

Cyclone 7" Oscillating Clip On Fan
£19.99 £27.99
CANNA Boost Accelerator – Flowering Booster
Sale

CANNA Boost Accelerator – Flowering Booster

CANNA Boost Accelerator – Flowering Booster
£35.85
VitaLink LECA Clay Pebbles (8-20mm)
Sale

VitaLink LECA Clay Pebbles (8-20mm)

VitaLink LECA Clay Pebbles (8-20mm)
£6.26

Why plant lovers choose Black Flag

Over 30,000 orders shipped with 99.9% positive feedback. Whether you're potting up your first Monstera, building a gritty mix for rare cacti or kitting out a full grow room, we've got the right mix, the right feed and honest advice to go with it — genuine brands, fair prices, no nonsense.

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