OMRI Listed kelp-and-B1 tonic for transplant recovery, root development, and vegetative vigor.
TechnaFlora Thrive Alive B1 Green is a concentrated, OMRI Listed organic seaweed tonic combining British Columbian kelp extract and vitamin B1 to support root mass development, reduce transplant shock, and increase nutrient uptake. Sized for commercial runs, the 4-liter format suits multi-site licensed operators running it across veg, propagation, and foliar programs.
Thrive Alive B1 Green is TechnaFlora's OMRI Listed seaweed-and-vitamin-B1 plant tonic, part of the brand's Recipe for Success nutrient line. It is built around organic kelp harvested from British Columbia's Pacific coast — specifically Macrocystis kelp, Nereocystis kelp, and Ascophyllum kelp — processed with potassium hydroxide into a liquid concentrate. The result is a low-input, pH-stable supplement that layers onto any base nutrient program without significantly shifting solution pH.
The Green variant is the OMRI Listed organic formulation. Its guaranteed analysis is 1.0% soluble potash (K₂O) and 0.01% water-soluble iron (Fe), plus 0.09% vitamin B1 as a non-plant-food ingredient. It is distinct from Thrive Alive B1 Red, which carries an NPK load and is better suited to reservoir use; Green is the foliar-and-organic-garden-compatible version, frequently run as a weekly foliar alongside Red in the reservoir.
Licensed indoor and greenhouse cannabis and hemp operators running soil, coco, or soilless media programs benefit most from Thrive Alive B1 Green. It is specifically useful in propagation rooms — for pre-soak drenches before transplanting, and as a post-transplant foliar to reduce shock during the first one to two weeks in a new container or bed.
Operations managing large mother-plant libraries use it as a rejuvenation drench before taking cuttings, keeping stock plants vigorous and ensuring consistent cutting quality. The 4-liter format is appropriate for cultivation teams that run it on a regular cadence — weekly foliar applications across canopy, or bi-weekly in the fertigation line — where 500 mL bottles cycle out too quickly to be cost-efficient. OMRI Listed status also makes it relevant for operators pursuing certified organic production or marketing to organic-focused retail channels.
Thrive Alive B1 Green can be deployed three ways: foliar spray, root zone drench, and transplant pre-soak. For foliar applications, the product is extremely concentrated — a low dilution rate means each liter stretches across a significant canopy area. Apply foliar in veg through the first week of flower; do not spray under HID or high-intensity lighting to avoid leaf burn. For transplant pre-soak, roots are submerged in diluted solution for approximately 15 minutes before going into the new substrate.
For hydroponic and soil fertigation, it is added to the nutrient solution at the recommended rate per gallon and does not require pH adjustment in most cases — the formulation is noted to not significantly alter solution pH. It pairs well with TechnaFlora's Rootech Cloning Gel for propagation cycles: the gel initiates root development while the B1 Green drench supports early root mass expansion and protects emerging cuttings from stress. It is used in addition to a complete base nutrient program, not as a standalone feed.
At the commercial scale, transplant shock and propagation consistency are meaningful yield variables. A B1-and-kelp supplement like Thrive Alive B1 Green addresses both: the kelp fraction provides natural growth factors and bioavailable potassium, while vitamin B1 (thiamine) supports root cell metabolism during the stress window of transplant. Running it as a weekly foliar through vegetative keeps leaf tissue in consistent health and supports canopy uniformity heading into the stretch.
The 4-liter size is HSC's standard commercial format for this product — it reflects the volume throughput of a mid- to large-scale cultivation site running regular foliar and drench programs. Operators who find themselves ordering multiple 1-liter bottles in rapid succession are typically better served moving to the 4L or the 20L format depending on canopy square footage. TechnaFlora is a Canadian-owned company based in Mission, British Columbia, with a full line of base nutrients, cloning products, and bloom supplements that integrate directly with Thrive Alive B1 Green through the Recipe for Success program.
| SKU | TF-BGREEN-4L |
| Brand | TechnaFlora |
| Container Size | 4 Liters (4L) |
| Organic Certification | OMRI Listed for use in organic production |
| Soluble Potash (K₂O) | 1.0% |
| Iron (Fe) – Water Soluble | 0.01% |
| Vitamin B1 (non-plant-food) | 0.09% |
| Derived From | Macrocystis Kelp, Nereocystis Kelp, Potassium Hydroxide, Ascophyllum Kelp |
| Application Modes | Foliar spray, root zone drench, transplant pre-soak |
| Compatible Media | Soil, coco/soilless, hydroponic |
Green is OMRI Listed and organic-certified, formulated for operators requiring certified organic inputs and for foliar use. Red carries a broader NPK profile (nitrogen, phosphate, potash) and is typically run in nutrient reservoirs throughout the vegetative cycle. TechnaFlora's own guidance notes that many growers run Red in the reservoir and Green as their weekly foliar spray — the two are complementary, not interchangeable.
It can be added to hydroponic nutrient solutions. However, because it is kelp-based and contains organic matter, some growers running deep water culture (DWC) or recirculating systems report preferring Thrive Alive Red for reservoir use due to the organic content. Green is most commonly used as a foliar spray and transplant drench in hydroponic environments, rather than as a continuous reservoir additive.
For foliar spray: approximately 1/2 tsp per quart of water (roughly 2–3 mL/L). For hydroponic or soil fertigation: approximately 1/2 tbsp per gallon of nutrient solution. For transplant pre-soak: dilute at 1/2 tsp per quart and soak roots for about 15 minutes before transplanting. Always follow label directions — this product is concentrated.
No. TechnaFlora's product documentation notes that it does not significantly alter pH levels when added at recommended rates. Standard pH management practices should still be maintained as part of your overall nutrient program.
The 4L is appropriate for mid-size licensed operations running Thrive Alive B1 Green on a regular weekly foliar schedule or across a dedicated propagation program. If your team is cycling through 4L containers rapidly (multiple times per month), TechnaFlora also offers a 20L format. If you're evaluating the product for the first time, contact HSC to discuss which size fits your current canopy and application frequency.
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