Emerald Harvest Emerald Goddess - Premium Plant Tonic and Growth Stimulator
Best for: growers wanting a natural biostimulant tea to support root health, nutrient uptake and overall plant vigour alongside their base feed.
Our thoughts
This is a tonic, not a tent or a feed, and it earns its place in a schedule by doing what good biostimulants do: giving the plant's own systems a boost rather than force-feeding it more NPK. A genuinely natural additive from a brand that knows what it's doing.
Emerald Goddess is Emerald Harvest's premium plant tonic, built as a natural tea rather than a conventional feed, with an NPK contribution of around 2-1-4. Its ingredient list includes alfalfa, valued for its natural triacontanol content which enhances photosynthesis, along with kelp extract, humic acid, vitamin B1 and a range of amino acids. Together these work as a biocatalyst, supporting the plant's own metabolic processes rather than delivering a direct nutrient hit.
It can be used as a foliar spray in dilution or as a root drench in soil or dense growing media, making it flexible enough to fit most feeding schedules. Emerald Harvest position it as a general vigour and health tonic that complements their Grow, Micro and Bloom base nutrients rather than replacing any part of the core feeding programme.
How it compares
Plant tonics and biostimulant teas are a growing category, and Emerald Goddess is a well-regarded entry in it.
- Vs BioBizz Acti-Vera: Acti-Vera is built around aloe vera, amino acids and enzymes and is certified organic and vegan, while Emerald Goddess leans on alfalfa, kelp and humic acid as its core ingredients.
- Vs Canna's Rhizotonic: Rhizotonic is focused specifically on root stimulation, whereas Emerald Goddess is positioned as a broader whole-plant tonic covering foliage and root health together.
- Vs generic kelp or seaweed extracts: those typically offer a narrower ingredient profile without the alfalfa-derived triacontanol or amino acid blend found here.
It's a specialist additive rather than a core feed, priced at the premium end of the biostimulant category to match its broader ingredient list.
Usage guidance
Flexible application, whichever method suits your setup.
Root drench
Apply diluted Emerald Goddess as a root drench in soil or dense growing media, working it into your regular watering routine.
Foliar spray
Dilute at a rate of roughly 5 to 10ml per gallon and apply as a foliar spray for faster uptake through the leaves.
Pairing
Use alongside Emerald Harvest's Grow, Micro and Bloom base nutrients as a supporting tonic rather than a stand-alone feed.
Storage
Keep sealed and use within the stated shelf life of around 18 months or more for best results.
Technical specifications
- NPK contribution: approximately 2-1-4
- Key ingredients: alfalfa (triacontanol), kelp extract, humic acid, vitamin B1, amino acids
- Application: root drench or foliar spray
- Dosage: approximately 5-10ml per gallon
- Shelf life: 18 months or more
- Sizes available: 0.95L, 3.79L, 9.46L, 22.71L
- Vendor: Emerald Harvest (Santa Rosa, California)
Who this is for
- Growers wanting a natural biostimulant alongside a mineral base feed
- Anyone running Emerald Harvest's Grow, Micro and Bloom line who wants the matching tonic
- Growers focused on overall plant vigour and root health rather than just NPK delivery
- Soil and dense-media growers who want a root drench option as well as foliar
Best suited to growers layering a natural tonic on top of an existing base feed for extra vigour.
Our take
Emerald Goddess does what a good plant tonic should: support the plant's own systems with genuinely natural ingredients rather than just adding more mineral salts to the mix.
Worth picking up if you're already running Emerald Harvest's base nutrients and want to round out the schedule.
