Houseplant Root Supplement
Houseplant root supplement that helps indoor plants recover from repotting, overwatering, and stress. Strong roots first, lush growth next.
Use it during repotting, transplanting, propagation, or other periods of root stress for a simple way to support recovery and new root development.
Why You'll Love It
- Strong Roots Helps indoor plants recover from repotting, overwatering and stress.
- Healthier Soil For potting mix where water runs straight through and past dry roots.
- Steady Growth Roots first, then the lush growth that depends on them.
Made by growers
More than a bottle on a shelf.
- Talk to real plant people. The team that mixes the formula answers your email.
- Made in-house, in the USA. Every bottle mixed and filled by us, not a third party.
- We're growers, not resellers. We use this on our own plants before it ships.
- Bundle savings only here. Pair any two TPS formulas — your order ships free.
Houseplant root supplement that helps indoor plants recover from repotting, overwatering, and stress. Strong roots first, lush growth next.
How to Use Houseplant Root Supplement
| Method | Amount | How Often |
|---|---|---|
| Watering can (spring & summer) | 1 tsp per quart (32 oz) of water | Apply every 1-2 weeks |
| Watering can (fall & winter) | Same dilution | Apply every 4 weeks |
Mix into your normal watering — no separate feeding routine needed. Designed to pair with all TPS houseplant products, not replace them. One dilution works across every houseplant you own.
What's Inside
Four ingredients, all aimed below the soil line. Sea kelp supplies natural growth-promoting compounds that support new root development — the part of the plant you never see, but the part that decides how much leaf growth the plant can afford. A 10% probiotic houseplant blend adds beneficial microbes that improve nutrient availability in the pot and help crowd out the rot organisms that take hold in soil kept too wet — a real risk in containers, where roots also need air, not just water.
Plant-derived surfactants fix the most common invisible watering problem: once potting mix dries out, it turns water-repellent, and water channels down the pot's sides and out the drainage holes while the root ball stays dry. Surfactants break that surface tension so moisture and nutrients spread evenly through the soil, and plant-derived fulvic acid helps carry minerals into the roots. There's no NPK here by design — it supplements your fertilizer rather than competing with it.
Made For
Any potted houseplant — pothos, philodendron, monstera, snake plants, ZZ plants, ferns, palms, peace lilies, calathea, and mixed plant collections — especially plants being repotted, newly brought home, recovering from root rot, or growing in soil that's gone hard to rewet.
Problems It Solves
- Water running straight out the drainage holes without wetting the soil
- Plants that stall out after repotting instead of taking off
- Recovery from overwatering or root rot once the soil issue is fixed
- A plant collection fed regularly that still grows slowly
FAQs
How often should I use root supplement on houseplants?
Add 1 tsp per quart (32 oz) of water and apply every 1-2 weeks in spring and summer, then every 4 weeks in fall and winter. Mix it into your normal watering — no separate routine needed. One dilution covers your whole collection, so you can water everything from the same can rather than mixing per plant.
Which houseplants can I use this on?
All of them — it's built as one supplement for a mixed collection: pothos, philodendron, monstera, snake plants, ferns, palms, peace lilies, and the rest. Because there's no NPK, there's no risk of giving a light feeder too much fertilizer. The kelp, probiotics, and surfactants do the same root-level work regardless of what's growing above the soil.
Is this a fertilizer? Do I still need plant food?
It's a supplement, not a fertilizer — there's no NPK in it. Kelp, probiotics, surfactants, and fulvic acid build root health and improve how well roots take up water and nutrients, but your plants still need actual nutrition from a fertilizer. The two work together: this makes the root system better at using what your plant food delivers.
Why does water run straight through my plant's pot?
Peat-based potting mixes turn water-repellent once they dry out fully — water beads on the surface, slides down the gap between soil and pot, and exits the drainage holes with the root ball still dry. The surfactants in this formula break that surface tension so water soaks in evenly again. For a badly dried pot, bottom-water once to rewet it, then resume normal watering.
Can this help a plant recover from overwatering or root rot?
It supports the rebuild, but fix the cause first: rot means the soil stays wet too long, so trim mushy roots back to firm tissue, repot in fresh well-draining mix if it's bad, and let the soil dry more between waterings — as the label says, roots need air. From there, the probiotics help healthy microbes establish and the kelp supports new root growth.
When will I see results?
Roots recover before leaves show it. Within 2-4 weeks of regular use, expect plants that hold steady and rewet easily when watered rather than shedding water. Visible growth follows in the growing season — typically 4-8 weeks — as rebuilt root capacity turns into new leaves. Slow growers like ZZ and snake plants take longer to show change than pothos or philodendron.
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