Canna Flush — Clean Finish, Living Substrate

Canna Flush clears excess nutrients and accumulated salts out of your substrate — and does it without wiping out the beneficial bacteria and fungi living there, which is what sets it apart from harsher approaches. Used in the final stretch before harvest it makes sure the plant sheds everything surplus, for a clean-tasting, aromatic result. It's equally useful mid-cycle as a reset if a substrate has been overfed.

Genuine UK Stock

We only sell genuine UK-market Canna, supplied through Canna's official UK distribution — current UK-label bottles, dispatched fast from our UK warehouse.

How to use Canna Flush

Pre-harvest: switch from your normal feed to Flush solution in the final phase — timing against your schedule is in our Canna feed chart guide.
Mid-cycle reset: use whenever salt build-up or overfeeding shows; the substrate keeps its beneficial life and you resume normal feeding after.
Dose per the bottle's directions for your water volume.
Works in soil, coco and hydro media alike.

Frequently asked questions

Why not just flush with plain water?
Plain water moves salts slowly and unevenly; Flush is formulated to bind and clear the excess efficiently while leaving the substrate's micro-life intact.

When do I stop my additives?
Boost, PK and enzymes come out when the flush begins — Flush is the last thing through the pot.

Does it work on reused substrate?
Yes — flushing before re-use pairs well with Cannazym's breakdown of old root matter for a clean restart.

Browse the full Canna range — genuine UK stock, all lines.