Superthrive Vitamin Solution — Plant Vitamin & Growth Tonic for Root Development and Transplant Recovery
Best for: Growers looking for a concentrated plant vitamin supplement to boost root strength, prevent transplant shock, and support plant vigour across any growing system
Our thoughts
Superthrive is the kind of product that's been around for 80+ years because it actually works. It's not a fertiliser—it's a vitamin boost for roots and overall plant health. Highly concentrated, so a small bottle goes a long way. One we recommend a lot for anyone transplanting, propagating, or dealing with stressed plants.
Superthrive is a concentrated vitamin and hormone supplement designed to support root development, plant vigour, and stress recovery across soil, hydroponic, and any other growing system. It contains a blend of Vitamin B1, kelp extract, and plant growth hormones (NAA and triacontanol) that work together to encourage stronger roots and faster establishment. Non-toxic and highly soluble, a little goes a very long way—just 1/4 teaspoon per gallon for most applications.
How it compares
Superthrive sits in the premium vitamin supplement category, competing against products like General Hydroponics RapidStart and Cyco B1 Boost.
- Heritage advantage—in use since 1939, trusted by professional growers worldwide
- More concentrated than many competitors; dosage is smaller, so bottles last longer
- Vitamin-based, not a growth nutrient—designed to complement your base feed, not replace it
- Works across all growing mediums and systems with equal effectiveness
- Cost-per-application is low despite the premium price tag
Usage guidance
Superthrive is incredibly versatile. How you use it depends on what you're trying to achieve:
Standard maintenance
Mix 1/4 teaspoon per gallon of water. Apply weekly or monthly depending on plant needs. Works with or without your regular nutrients.
Transplanting and propagation
This is where Superthrive really shines. Use 1 teaspoon per gallon when transplanting, cloning, or starting seeds. Apply 2–3 days before moving plants to reduce shock. Use again after transplant to aid recovery.
Hydroponic systems
Mix into your reservoir at standard 1/4 teaspoon per gallon. Works with deep water culture, ebb and flow, aeroponics, and run-to-waste setups. Compatible with all nutrient brands.
Foliar spray
1/4 teaspoon per gallon. Spray foliage directly for rapid absorption during veg or early growth.
Stressed plants
If plants are struggling (heat, pest pressure, poor establishment), apply at full strength (1 teaspoon per gallon) to encourage recovery.
Technical specifications
- Active ingredients: Vitamin B1, kelp extract, 1-naphthaleneacetic acid (NAA), triacontanol
- NPK ratio: 0.5-0-0
- Concentration: Highly concentrated—1/4 teaspoon per gallon for standard use
- Available sizes: 4 oz, 1 pint, 1 gallon, 2.5 gallon, 5 gallon, 15 gallon
- Shelf life: Best used within two years
- Formulations: All-purpose, orchid, bonsai variants available
- pH: Neutral, no significant EC contribution
Who this is for
- Growers transplanting regularly (whether moving between pots or locations)
- Propagators and clone operators wanting improved survival rates
- Anyone starting seeds and wanting stronger early development
- Hydroponic and coco growers building a complete nutrient strategy
- Growers with stressed or weak plants needing a recovery boost
- New growers who want straightforward insurance against transplant shock
- Anyone running budget-conscious grows—the concentration means one bottle lasts months
Our take
Superthrive does what it's supposed to do: strengthen roots and reduce transplant stress. The concentration is genuinely efficient, and the product's 80-year track record speaks for itself. It's not cheap per bottle, but the dosage is so small that cost-per-use is actually reasonable.
If you're transplanting regularly, propagating, or just want to give your plants a vitamin boost without complicating your feed schedule, this is worth picking up. Particularly good value if you're buying the larger sizes. Does exactly what it should, day in, day out.
