Monstera Aerial Roots

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What aerial roots are

Aerial roots are roots that grow from a plant's stem above the soil line rather than from the underground root system. In monstera (Monstera deliciosa and related species), aerial roots grow from nodes on the stem. They are thick, slightly waxy when young, and range from a few inches to several feet long on mature plants.

In the wild, monstera are hemi-epiphytic climbing plants: they begin life on the forest floor and grow toward the nearest tree trunk, using aerial roots to grip the bark and pull themselves upward toward the light. Aerial roots anchor the plant to the structure it climbs and also absorb moisture and nutrients from the bark surface, rainwater, and the highly humid tropical air.

Indoors, a monstera no longer has a tree to climb, so aerial roots that develop often dangle in the air or probe around in search of something to attach to. This is completely normal behavior. A monstera growing aerial roots is healthy and actively developing.

When aerial roots appear

Young monstera plants rarely produce aerial roots. As the plant matures and the stems lengthen beyond the first few nodes, aerial roots begin to appear at each new node alongside or just below each leaf petiole. A plant in a small pot with limited growth may produce few; a large, well-established plant with multiple long stems may produce many.

Plants in higher humidity conditions may produce longer and more numerous aerial roots than the same plant in a dry environment. Plants with a moss pole or coco coir support often direct their aerial roots actively into the support, where the roots can grip and absorb moisture from the dampened material.

Option 1: Leave them alone

Aerial roots that dangle in the air are not a problem. The plant is not harmed by having roots that touch nothing, and the roots will not damage furniture or floors (they are not parasitic and do not extract nutrients from surfaces they rest on). For many plant owners, the aerial roots are a visual indicator of a healthy, growing plant and are left as-is.

Option 2: Redirect into soil

Aerial roots that are long enough can be guided into the top of the potting soil or into a second nearby pot. Once in contact with moist soil, the roots begin to absorb water and nutrients, which the plant can use in addition to its underground root system. This is particularly useful for large plants or plants that have become somewhat rootbound: the aerial roots provide additional uptake capacity.

To redirect a root into soil, guide it gently toward the soil surface and push the tip a few inches into the potting mix. Do not force or sharply bend the root; if it does not reach comfortably, wait until it grows longer. Aerial roots that are established in soil can support the plant structurally as well, helping a top-heavy plant stay upright.

Option 3: Use a moss pole

A moss pole (or coco coir pole) is the best way to support a climbing monstera and to make use of aerial roots. Aerial roots actively seek out and grip moist, rough surfaces. A moss pole kept lightly damp by regular misting or top watering provides the surface the plant is looking for.

Tie the stems loosely to the pole with soft plant ties to guide the plant's direction. Aerial roots that contact the damp moss will grip it within a few weeks, eventually holding the plant in place without ties. A monstera supported on a moss pole typically grows larger leaves and may begin to develop more pronounced fenestrations (leaf splits) compared to the same plant without a support structure.

Option 4: Put them in water

Placing aerial roots in a container of water is a popular option. Monstera roots absorb water readily, and this is an easy way to let the plant benefit from roots that would otherwise hang in dry air. Change the water every week to keep it fresh and prevent bacterial buildup. Use room-temperature water; cold water can stress roots.

This works well as a short-term arrangement or for the aesthetic of a vase alongside the plant. For long-term care, redirecting into soil or a moss pole is generally more stable.

Option 5: Trim them back

Trimming aerial roots is perfectly safe. Use clean, sharp scissors and cut the root back to a length you prefer, or cut it flush with the stem if you want it gone entirely. The plant will not be harmed. New aerial roots will continue to grow from future nodes as the plant develops. If you find aerial roots repeatedly getting in the way, trimming is a reasonable ongoing maintenance task.

Do not pull or yank aerial roots from the stem; cut them cleanly. The small wound at the stem heals quickly.

Aerial roots versus root rot

Aerial roots are sometimes confused with roots escaping from drainage holes or roots that appear at the soil surface when a plant is rootbound. These are soil roots rather than aerial roots and indicate the plant is ready for a larger pot rather than anything about aerial root production. Aerial roots specifically emerge from the stem above the soil level, at or just below leaf nodes.

If an aerial root turns mushy, dark, or smells bad, inspect the soil and root ball. Aerial roots that rot are usually a symptom of a general root rot problem in the pot below, not a problem with the aerial root itself.