ROOTS · Southern bull kelp extract
Start with
the roots.
Most yield problems start in a place you’ll never see — the root zone. ROOTS is a cold-water kelp extract with humic acid and vitamin B1, run in every feed or mixed as a dip for cuttings and plugs.
Australian-made · 26 years in the US · N-P-K 0.0083–0–0.43
New · Roots, explained
Gel, kelp or microbes? See how Roots stacks up against 22 rooting products.
How each one works, where it comes from, and what it costs per gallon.
Why it matters
Weak roots cap your yield.
Everything above ground is limited by what’s below it. Feed the root zone what it actually wants and the whole plant lifts — uptake, vigour and yield.
Southern bull kelp
Whole kelp extract from the cold Southern Ocean — the same seaweed researchers have studied for root-zone growth.
Feeds the root zone
Kelp and humic carbon are food for the biology already living around your roots — no live microbes in the bottle.
Feed or dip
0.5 ml/L in every feed, or 1 ml/L as a dip for cuttings and plugs — one bottle, two ways to run it.
What’s in the bottle
Three things. All on the label.
No secret blend and nothing synthetic. Here is everything the ROOTS label declares.
Southern bull kelp extract Durvillaea potatorum
Cold-water brown kelp from the Southern Ocean. Researchers find whole kelp extracts work as a signal the plant responds to, rather than as a hormone dose.
Humic acid 0.075% From leonardite
Carbon that holds onto micronutrients in the root zone and feeds the soil life already there.
Vitamin B1 0.054% Thiamine
Listed on the label as a non-plant-food ingredient.
No synthetic IBA or NAA rooting hormone, and no live microbes. See how that compares with other rooting products →
A real root system from a grower running Bloom Roots.
What growers are seeing
Run it once. You’ll get it.
“I was gone a week, and the nutrient levels on the Bloom Roots buckets were still active — my Clone-X bucket ran dry days before. Such a great product.”
@jason_capsaicin_
DWC, side-by-side vs. Clone-X · shared via Instagram
“Day 10 on Roots and they’re popping — the growth in the tent is nuts.”
@highvoltagepeppers
“I double down on Roots for clones — typically rooted in 4–7 days.”
@deogrow
Where it fits
Gel on the cut. ROOTS in the water.
Rooting hormone gels
·
Synthetic IBA/NAA.
·
One dip on the cut end.
·
Not for your tank.
Bloom ROOTS
✓
Kelp extract, humic acid and B1.
✓
1 ml/L as a dip for cuttings and plugs.
✓
0.5 ml/L, weekly, soil, coco or hydro.
Plenty of growers do both. Compare 22 rooting products →
A little goes a long way
1 L → 2,000 L
of finished feed at 0.5 ml/L — one concentrated bottle does the work of many.
Proof — label & MSDS
Straight off the label.
N – P – K
0.0083 · 0 · 0.43
Type
Kelp extract
Dose
0.5 ml/L
Made in
Australia
Southern bull kelp + humic acid + B1
100% biodegradable
pH 8–10
By Agricultural Organics, South Australia
N-P-K from the product label. Composition and properties from the manufacturer MSDS.
When to use it
Weekly. Cutting to chop.
Cutting dip
Veg
Flower
Late flower
Flush
Soil / coco / hydro, weekly0.5 ml/L
Cutting / plug dip1 ml/L
Final 1–2 week flushstop
Fix what’s under the soil.
Everything above it lifts.
Shop ROOTS →
Or DM FEED CHART to @bloom_crew_nate for your full Roots schedule.
Grower proof series
Images on this page are a mix of real photos and AI-generated illustrations, used to show how things work.