Aerial roots are roots that grow from a plant’s stem above the soil line — and they’re one of the most misunderstood features in houseplant care. If you’ve noticed thick brown nubs on your pothos stems, wispy tan clusters emerging from your philodendron nodes, or the impressive rope-like roots hanging from a monstera, you’ve seen aerial roots in action. They are not a sign of stress, disease, or poor care. They’re a sophisticated adaptation that’s been evolving in rainforest plants for millions of years.
What you should do with aerial roots depends on the plant, the root’s size, and your goals — but the one thing you almost certainly shouldn’t do is cut them all off. Here’s a complete guide to aerial roots on common vine plants.
What Are Aerial Roots and Why Do Plants Produce Them?
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When a climbing vine begins producing aerial roots, a moss pole for indoor climbing plants gives those roots a support to attach to rather than leaving stems unsupported.
In their native rainforest environments, most popular vine houseplants don’t grow in soil at all — or at least not primarily. Pothos, philodendrons, monsteras, and hoyas climb the trunks and branches of trees, using them as physical support to reach the forest canopy and access more light.
Aerial roots serve several functions in this climbing lifestyle:
Physical attachment — Aerial roots grip bark, rough surfaces, and organic debris on tree trunks, anchoring the plant as it climbs. This is the primary function for most climbing aroids.
Moisture and nutrient absorption — In the high humidity of tropical rainforests, aerial roots can absorb water directly from the air and from organic matter on tree bark. This supplemental absorption is less critical in typical home humidity but the roots retain this capacity.
Structural support — On large plants like mature monsteras, aerial roots eventually reach the ground and act as prop roots, supporting the weight of massive leaves and long stems.
Sensing the environment — Emerging research suggests some plants use aerial roots to sense light levels and growing surfaces, helping direct their climbing pattern.
Which Vine Plants Produce Aerial Roots?
Most popular aroid houseplants produce aerial roots, but they vary significantly in appearance and behavior:
| Plant | Aerial Root Appearance | Size | Function | Frequency |
|---|---|---|---|---|
| Golden Pothos | Short, stubby, brownish | 0.5-2 inches | Climbing and light moisture absorption | Common, from each node |
| Heartleaf Philodendron | Thin, wispy, pale tan | 1-4 inches | Climbing, moisture | Very common |
| Monstera Adansonii | Medium, cord-like, brown | 2-8 inches | Climbing, prop support | Common |
| Monstera Deliciosa | Thick, rope-like, dark | 12-36+ inches | Prop roots, climbing | Prolific on mature plants |
| Hoya Carnosa | Small, waxy, cream | Under 1 inch | Light climbing grip | Occasional |
| Scindapsus | Short nubs, brown | Under 1 inch | Climbing | Common |
| Rhaphidophora Tetrasperma | Medium, fibrous | 2-6 inches | Climbing | Common |
What to Do With Aerial Roots: Your Options
Option 1: Leave Them Alone (Always Valid)
Aerial roots are completely harmless if left alone. They won’t damage your walls, shelves, or furniture (unlike some outdoor vines that have adhesive pads). They won’t steal resources from the plant. They won’t become unmanageable.
If the look of aerial roots doesn’t bother you, doing nothing is a perfectly good choice. The roots will stay dormant if they don’t make contact with anything to climb or absorb from, and the plant will continue growing normally.
Option 2: Direct Them Toward a Moss Pole
This is the most beneficial option for climbing aroids. A moss pole (or coir pole, wood plank, or similar textured support) mimics the surface of a tree trunk. When aerial roots make contact with moist moss or a textured surface:
- They grip and attach, anchoring the plant to the support
- They begin absorbing moisture, reducing the plant’s dependence on roots in the soil
- The plant is triggered to produce larger, more mature leaves — this is one of the primary drivers of fenestration (holes) in monsteras and larger leaf development in pothos and philodendrons
If you want your vine plants to grow the way they do in nature — with larger, more impressive leaves — providing a support for aerial roots to attach to is one of the most impactful things you can do. Keep the moss pole moist by misting it regularly.
See the moss pole guide for setup instructions.
Option 3: Direct Them Into the Soil
On longer aerial roots, you can gently bend them down into the potting mix. Once in soil, they function as additional roots, absorbing water and nutrients and helping anchor the plant. This is especially useful for:
- Large philodendrons and pothos that have become top-heavy
- Plants where you want additional nutrient absorption without repotting
- Stabilizing a plant that’s leaning or unstable
Don’t force a thick root that resists bending — you can snap it. If it’s stiff, leave it.
Option 4: Mist Them
In very dry indoor environments (below 40% humidity), aerial roots on some plants become dry and brown-tipped. Misting them occasionally or placing the plant near a humidifier helps them stay functional and look more presentable. This is particularly relevant for monsteras.
What NOT to Do With Aerial Roots
Do not cut them all off. This is the most common mistake. Aerial roots don’t regenerate from the same spot — once removed, that particular root is gone. You lose:
- Climbing potential
- Moisture absorption capacity
- The trigger for larger leaf production
- Structural anchoring (on large monsteras)
You can trim individual aerial roots that are genuinely in the way — cutting one or two from an established plant is not going to harm it. But systematically removing all aerial roots is counterproductive for climbing aroids.
Do not confuse them with root rot. Aerial roots are firm, brown or tan, and grow from nodes on stems. Roots affected by rot are soft, mushy, dark, and smell unpleasant — and they grow from the soil, not from stems.
Aerial Roots vs. Normal Roots: Key Differences
| Feature | Aerial Roots | Normal (Soil) Roots |
|---|---|---|
| Location | Stems and nodes, above soil | Below soil surface |
| Color | Brown, tan, cream, sometimes green at tips | White to tan when healthy |
| Texture | Firm, sometimes slightly rough | Fine and fibrous, or thick and fleshy |
| Function | Climbing, moisture, structural support | Water and nutrient absorption, anchoring |
| What happens if removed | Won’t regrow from same spot | Regrow from remaining root mass |
| Should you remove them? | Rarely | Never healthy roots |
Aerial Roots as a Health Indicator
While aerial roots are normal and healthy, their condition can tell you something about your plant’s environment:
Bright green tip with white/tan body — Very healthy, actively growing aerial root. The green tip indicates active cell division.
Fully brown and firm — Normal dormant aerial root. Not attached to anything, not actively growing, but healthy.
Shriveled and very dry — Low humidity. Mist or increase ambient humidity.
Black, mushy, or foul-smelling — Rot, possibly from water sitting in the node area. This is concerning and should be investigated.
The Bottom Line on Aerial Roots
Aerial roots on your vine plants — those nubs on pothos, wispy threads on philodendron, rope-like structures on Monstera Adansonii — are features, not flaws. They’re your plant telling you it’s doing exactly what it evolved to do: climb. Redirect them toward a moss pole for the most benefit, push them gently into soil if they’re in the way, or simply leave them alone. What you shouldn’t do is cut them all off out of tidiness — you’ll lose climbing function and the larger-leaf growth that comes with proper aerial root engagement.
