White paper 02 · ROOTS · Grower proof series
The one growers
try first
Bloom ROOTS is a southern bull kelp extract growers use from cuttings through early veg, as a feed and as a dip. It has more growers on record than anything in the range bar Ooze.
Reading time ~4 minutes · Label figures transcribed from the product labels · Sources listed at the end · October 2026
The product
Cuttings to early veg
Growers use ROOTS two ways: in the feed through early veg, and as a dip for cuttings and plugs. Several run it on clones and seedlings only, rather than across the whole cycle.
The label lists one seaplant, Durvillaea potatorum (southern bull kelp), plus humic acid and vitamin B1. It’s an additive over your base feed, not a base.
20+
Growers with a ROOTS quote on record · counted 30 Oct 2026
0.5 / 1
Rate in feed / as a dip · ml per litre
1
Seaplant on the label · Durvillaea potatorum
What’s actually different
Three things worth knowing
One seaplant, stated plainly
Southern bull kelp, humic acid and B1. That’s the whole label, and we don’t claim anything beyond it.
Two ways to run it
0.5 ml per litre in the feed, or 1 ml per litre as a dip for cuttings and plugs.
It sits over your base
Nobody in the record swapped their base feed to run it.
Worth knowing. Most of what’s here is growers describing what they saw. One grower compared plants with and without ROOTS in the same room; his words are below.
What growers are reporting
In their own words
Quotes come from Bloom’s grower review records. Some are lightly trimmed for length and spelling, with the meaning unchanged; the original messages are on file. Growers in the trial program agreed to their feedback being shared.
“The roots definitely helped. The three plants I used them on are roughly 6–10 inches taller than the ones I didn’t. Same PPFD, EC and water times; the only difference was the Bloom.”
@apollos_oasis
Roots · 10 Feb 2026
“I love the smell of Roots, it’s my go-to. I double down on clones and they’re typically rooted in 4–7 days.”
@deogrow
Roots · 28 Jun 2025
“Day 10 since switching to Bloom. The seedlings only got Roots and they’re really happy. The growth in the tent is nuts, they’re popping!”
@highvoltagepeppers
Roots · 10 Dec 2025
“Roots works best as a dip. I mix a 12-gallon batch and dip my teens roots and all. Cuts the smell too.”
@white_buffalocultivationco
Roots · 22 Nov 2024
“Roots and Sea Minerals have been key to getting my plants this happy: zero signs of shock or setback.”
@squidward_organics
Roots · Sea Minerals · 8 Sep 2025
“Still using Roots and Seafuel in my cloning regime and they love it.”
@griffbain13
Roots · Seafuel · 13 Oct 2025
“I’ve been feeding Bloom to my herb garden and house plants and everything’s thriving. I feed Bloom to anything with roots!”
@karmapharma
Roots · 15 Aug 2025
The numbers
What’s on the label
Guaranteed analysis is the figure printed on the product label, not a marketing claim. Rates are Bloom’s standard schedule.
ROOTS
Guaranteed analysis 0.0083-0-0.43
Total Nitrogen (N)
0.0083% (0.0021% ammoniacal, 0.0062% water-soluble organic)
Soluble Potash (K₂O)
0.43%
Derived from
Durvillaea potatorum (seaplant extract)
Also contains (non plant food)
0.075% humic acid (from leonardite), 0.054% thiamine hydrochloride (vitamin B1)
Rate
0.5 ml per litre in feed; 1 ml per litre as a dip for cuttings and plugs
What we can stand behind
Sourced, or it isn’t here
20+ growers have a ROOTS quote on record.
Source: Bloom grower review records, counted 30 Oct 2026
The seaplant in ROOTS is Durvillaea potatorum, southern bull kelp.
Source: Bloom ROOTS product label
Made in Australia by Agricultural Organics; sold in the US for 26 years.
Source: Product labels and Agricultural Organics company history
Put it in a grower’s hands
ROOTS is the easiest bottle in the range to trial: narrow job, fast feedback, and 20+ growers already on record.
See every grower review →Talk to Nate directly: nathan@bloomyellowbottles.com · (970) 556-1678 · bloomyellowbottles.us · @bloomyellowbottles · @bloom_crew_nate
Sources
- Bloom grower review records, counted 30 Oct 2026 — 20+ growers have a ROOTS quote on record.
- Bloom ROOTS product label — The seaplant in ROOTS is Durvillaea potatorum, southern bull kelp.
- Product labels and Agricultural Organics company history — Made in Australia by Agricultural Organics; sold in the US for 26 years.