Our Orchid Root Supplement is a root supplement for orchids, for use at repotting, transplanting and while roots recover. It supports new root development and recovery after repotting, transplanting or root loss.
Thick, silvery roots come before big blooms.
Free shipping30-day returnsMade in Seattle
Soil and root health are shaped by watering, drainage, light and season as much as by what you add, so this is one part of overall plant care.
Nourishes blooms for richer color and brighter, longer-lasting beauty.
Encourages fresh leaf and stem growth for a fuller, thriving plant.
Supports healthy resilient roots that absorb nutrients more effectively.
Watering can
1 tsp per quart (32 oz) of water
Spring & summer: every 1–2 weeks · Fall & winter: every 4 weeks
Bright, indirect light for most of the day, such as an east window or a few feet back from a south one. Direct midday sun scorches the leaves.
Water thoroughly at the sink once the mix is nearly dry, then let the pot drain fully. Ice cubes and small sips leave the deeper roots dry and shrivelled.
Grow in a bark or sphagnum orchid mix, never regular potting soil. Roots need air around them, and a clear pot lets you watch their color and condition.
Aim for 40 to 60 percent humidity with air moving around your plant. A pebble tray helps in dry winter rooms, while misting the leaves does very little.
Use Orchid Root Supplement alongside your regular orchid fertilizer, mixing it into your watering through repotting, propagation, or any stretch of root stress and recovery.
Repot every one to two years as the bark breaks down, ideally just as new roots start. Trim away hollow, papery roots and keep the firm silvery ones.
Orchid Root Supplement rides along with normal watering rather than needing a routine of its own. Mix 1 teaspoon per quart of water and apply every 1–2 weeks in spring and summer, dropping to every 4 weeks in fall and winter. It fits either watering style: pour it through with a watering can, or mix it into the water you dunk the pot in and let the roots soak, which gives the surfactants time to carry moisture into dry bark and velamen.
It helps with the rebuilding, but the rescue steps come first. Rot is caused by a soggy, broken-down mix, and nothing fixes that while the old medium stays, so unpot the orchid, trim mushy brown roots back to firm tissue and repot in fresh bark. From there, the kelp in Orchid Root Supplement supports new root tips, and the probiotic blend helps beneficial microbes establish in the fresh mix and crowd out the rot organisms that thrive in wet, decayed bark.
No, and yes. Orchid Root Supplement is a supplement with no NPK by design. Kelp, probiotics, surfactants and fulvic acid build root health and improve how well the roots take up water and minerals, but your orchid still needs actual nutrition from an orchid fertilizer. The two are designed to work together: this makes the roots better at using what the fertilizer delivers, and it pairs with all TPS orchid products rather than replacing them.
Silvery roots are normal: the velamen that coats orchid roots turns silver-grey when dry and green when wet. Shriveled and papery is the warning sign, meaning the orchid isn’t absorbing enough water, either from underwatering or from bark so old and dry that it repels moisture. Soak longer when you water, and your plant-derived surfactants in Orchid Root Supplement help that water actually penetrate the velamen instead of running off. If the mix is years old, repot.
The roots. Everything in Orchid Root Supplement targets the root zone: kelp for new root tips, probiotics for the microbes in the bark, and surfactants and fulvic acid to carry water and minerals into the velamen. Mix it into your watering or dunk water so it reaches the roots and the bark around them. There’s no need to spray leaves, and with orchids you want to keep water out of the crown anyway, since water sitting there invites rot. Aerial roots reaching out of the pot benefit from the dunk method too.
Look at the roots, not the flowers. New root tips, the bright green growing points on the ends of roots, are the first sign that Orchid Root Supplement is doing its work, typically within 3–6 weeks of regular use during the growing season. Fuller, plumper velamen follows. The payoff above the pot comes on the orchid’s own schedule: stronger roots support the next growth cycle and bloom spike rather than changing the one already underway.
Let's Start Growing!
Choose your sizeTell us what you're growing and we'll match the right formula.
Start typing your plant above.