Philodendron Melanochrysum Care: How to Grow Its Large Velvety Leaves Indoors

Philodendron melanochrysum is a climbing tropical plant known for its large, heart-shaped leaves, deep green colour, coppery sheen and soft, velvety surface. Its pale veins stand out against the dark foliage, giving mature leaves a distinctive appearance.

Unlike Philodendrons grown mainly for their trailing stems, Melanochrysum naturally climbs. As it develops, its stems need suitable support, and its leaves can become considerably larger than those of a young nursery plant. The Royal Horticultural Society (RHS) lists mature leaves measuring approximately 25–75 cm long and a potential plant height of 2.5–4 metres. These are reference figures, not guaranteed indoor results.

Growing this plant indoors requires attention to a few important details. It needs bright, filtered light, a loose growing medium that holds some moisture without becoming waterlogged, and a stable structure for its climbing stems.

I learned the importance of getting its root environment right through an early growing mistake with this species. My potting mix stayed too wet, the roots deteriorated, and I lost the plant. That experience made me pay much closer attention to drainage and how long the growing medium stays wet. With Melanochrysum, keeping the roots healthy matters just as much as looking after the leaves.

This guide explains how to grow Philodendron melanochrysum indoors, including support options, watering, potting mix, propagation, pest identification and the problems that can affect its foliage.

Philodendron melanochrysum care at a glance

Understanding the growth habit of Philodendron melanochrysum

Philodendron melanochrysum is an accepted botanical species in the Araceae family. Kew’s Plants of the World Online records its native range as Colombia and describes it as a climber growing primarily in the wet tropical biome. The species was first published in 1873.

There is a small difference between the geographical information in the botanical references. Kew lists Colombia as the native range, while the RHS plant profile lists Colombia and Panama. It is better to recognise that difference than to suggest both sources give exactly the same range.

Its climbing habit is important when planning where to grow it. In its natural environment, it uses nearby structures for support rather than developing as a compact, self-supporting houseplant.

The leaves are the main attraction. They are large and heart-shaped, with a soft, velvety surface. Mature foliage develops a deep green appearance with a coppery sheen and noticeable pale green veins. New growth can look different from older leaves, so a young plant may not yet have the appearance associated with mature specimens.

The RHS describes Melanochrysum as a fairly slow-growing evergreen climber. It lists leaves measuring approximately 25–75 cm long, a potential height of 2.5–4 metres and a time to maturity of around 5–10 years. These figures are horticultural reference estimates. A houseplant’s actual size depends on its age, growing conditions and available space.

You can find further botanical information in Kew’s Plants of the World Online profile and the RHS Philodendron melanochrysum profile.

Why climbing matters for leaf development

Young Melanochrysum plants often produce smaller leaves than the mature plants shown in specialist collections. This is not automatically a sign of poor care.

As the plant develops, its climbing stem produces successive leaves. A stable support gives the stem somewhere to attach and makes it easier to guide its growth upwards.

Suitable support, enough light, healthy roots and consistent growing conditions all contribute to good development. Plant maturity also matters.

A moss pole does not guarantee enormous leaves. It provides a climbing surface, but the plant still needs time and suitable conditions to develop.

This is worth remembering when comparing a small nursery plant with photographs of mature specimens. The difference may reflect several years of growth rather than a special fertilizer or care trick.

Give the stem a support it can actually climb

One of the first decisions to make when growing Philodendron melanochrysum indoors is what kind of support to provide.

Its stems naturally climb, so leaving the plant unsupported for long periods can make it harder to manage as it develops. The stems may spread across a shelf, lean towards nearby objects or become tangled with other plants.

Although young stems can hang over the edge of a shelf or container, providing vertical support is a better choice when you want to guide the plant upwards and accommodate its mature growth.

Moss poles and climbing boards

A sphagnum moss pole is a popular option because it provides a textured surface where aerial roots can make contact. When the moss is kept suitably moist, roots may attach and grow into it.

A textured wooden board is another possibility. It provides a firm climbing surface without requiring you to maintain moist moss.

A trellis can also guide the stems and keep the plant organised, although it may require more manual support if the plant cannot attach itself to the surface.

For a plant that you want to grow vertically indoors, choose a sturdy support that can accommodate future growth rather than a small structure that needs replacing as soon as the plant becomes established.

The RHS also explains that climbing Philodendrons can be trained onto moss poles and may eventually root into the support when it is kept moist. Its general Philodendron growing guide provides further advice on training and supporting these plants.

How to attach the plant without damaging it

Position the support close to the main stem. This makes it easier to guide the growing tip towards the structure.

Use soft plant ties or clips to hold the stem loosely against the support where necessary. Avoid tightening them around the stem as it thickens.

Pay attention to the difference between the main stem and the leaf stalks, known as petioles. Secure the stem rather than pulling individual petioles tightly against the pole. Petioles need room to move as the leaves develop.

As the plant grows, aerial roots may begin reaching towards the support. You can gently guide accessible roots towards a suitable surface.

Avoid forcing established stems into sharp bends. Older growth can become difficult to reposition without damage.

Check the support occasionally to make sure it remains stable. A taller Melanochrysum with large leaves can become heavy, and a loose pole may move when the plant grows.

For another example of a climbing Philodendron, see our Philodendron Spiritus Sancti care guide.

Find a bright position without exposing the leaves to harsh sunlight

Light affects how well Philodendron melanochrysum grows indoors.

Although it comes from a tropical environment, it does not need strong direct sunlight throughout the day. A bright position with filtered or indirect light is a better starting point.

An east-facing window can work well because it often provides gentler morning light. A bright south- or west-facing window may also be suitable if a sheer curtain or some distance from the glass reduces intense sunlight.

The exact position depends on the strength of the sunlight, the distance between the plant and the window, and how much natural light enters the room.

The RHS recommends bright but filtered light for this species. It also warns that direct summer sunlight can scorch the leaves.

What happens when the light is insufficient?

A Melanochrysum growing in a dim location may produce slower or weaker growth.

You might notice:

• Longer spaces between leaves along the stem.
• Smaller new leaves.
• Slower development of the growing tip.
• Stems stretching towards the nearest light source.

These signs are not exclusive to insufficient light. Poor root health and other growing problems can also affect leaf development.

If your plant is growing slowly, check the condition of its roots and potting mix before making a major change to its care routine. Also consider whether the plant is still young and naturally producing smaller leaves.

Can direct sunlight damage its leaves?

Yes. Strong sunlight, particularly through glass, can scorch foliage that has not adjusted to it.

Sun damage may appear as pale, bleached or dry brown patches on the sections exposed to the strongest light.

Move the plant gradually if it needs a brighter position. Sudden exposure to intense sunlight can cause additional damage.

Artificial grow lights can help when natural daylight is limited. Choose a light intended for growing plants, follow the manufacturer’s positioning instructions and observe how the foliage responds.

Choose a potting mix that stays moist without becoming soggy

The root environment deserves particular attention with Philodendron melanochrysum.

Its roots need access to moisture, but they also need oxygen. A dense potting mix that remains saturated for extended periods can create conditions that encourage root deterioration.

This is why ordinary, compact garden soil is not a suitable choice for growing this plant in a container.

The RHS recommends humus-rich, well-drained compost for Melanochrysum. Its general Philodendron guide also recommends a loose, free-draining medium.

Ingredients that work well in an indoor mix

You can build a suitable mixture using materials such as:

Orchid bark: Adds structure and creates larger spaces within the mixture, helping maintain airflow around the roots.

Perlite or pumice: Helps maintain air spaces and allows excess water to drain.

Coco coir: Provides some moisture retention without making the entire mixture overly dense.

Quality potting mix: Adds a finer organic component that helps hold moisture and provides a growing medium for the roots.

You do not need to follow one fixed recipe. The proportions should reflect the materials available, your pot size and the conditions in your growing space.

A useful starting point is a quality potting mix combined with orchid bark and perlite or pumice. Check how the mixture behaves after watering.

If it stays wet for too long, it may need more coarse material or a smaller container. If it dries unusually quickly, it may need a little more moisture-retaining material.

The important thing is to avoid a mixture that collapses into a dense, muddy mass after repeated watering.

Choosing the right container

Use a container with unobstructed drainage holes.

Its size should be based on the existing root system rather than the size of the leaves.

An oversized container can hold more unused potting mix than the roots can absorb moisture from. This may cause the medium to remain wet for longer than necessary.

A slightly larger pot is generally more appropriate when repotting a healthy plant that has outgrown its existing container.

The RHS recommends choosing a pot only a few centimetres wider than the root ball for Philodendrons, because a much larger volume of compost can stay wet for longer.

I would also avoid decorative containers without drainage unless the plant is growing in a separate nursery pot that can be removed for watering.

Water according to what is happening inside the pot

Watering Philodendron melanochrysum requires more attention to the potting mix than to the calendar.

The plant appreciates consistent moisture, but its roots should not remain surrounded by saturated growing medium.

How frequently it needs water depends on several conditions:

• The amount of light reaching the foliage.
• Indoor temperature and humidity.
• The size and material of the pot.
• The amount of bark and other coarse material in the mix.
• The development and health of the roots.
• Whether the plant is actively growing or experiencing slower growth.

For example, a plant in bright light with an established root system may use water faster than a smaller plant in a cooler, less brightly lit room.

How to decide when to water

Check the upper layer of the potting mix before adding water.

When the surface has started to dry, assess the moisture deeper in the pot as well. Do not water simply because the surface feels dry while the lower root zone remains saturated.

Once the plant needs water, apply it evenly until excess moisture drains through the bottom. Empty the saucer afterwards rather than allowing the container to remain in standing water.

During periods of slower growth, watering needs may decrease. This is particularly important in cooler indoor conditions, when the potting mix may take longer to dry.

The RHS recommends allowing the compost surface to dry slightly before watering Philodendrons and warns against leaving them standing in water.

What if the mix stays wet for too long?

A growing medium that remains wet for an unusually long time needs attention.

Check whether the mixture has become compacted, whether the container is too large for the root system and whether the drainage holes are blocked.

If the plant is declining, inspect the roots. Healthy roots can vary in colour, so brown colouring alone does not confirm root rot. Soft, mushy or deteriorating tissue is more concerning.

Do not respond to every yellow leaf by immediately withholding water. First establish whether the plant is naturally shedding an older leaf, experiencing prolonged wetness or suffering from another problem.

Maintain warm conditions without relying on extreme humidity

Philodendron melanochrysum comes from a tropical environment, so it generally responds better to warm, stable indoor conditions than to cold rooms or sudden temperature changes.

The RHS recommends maintaining a minimum winter temperature of 15°C for this species. This is a cultivation guideline, not a guarantee that the plant will grow equally well at every temperature above that point.

Protect it from cold drafts, particularly near windows during colder months. Air conditioning and heating systems can also create uncomfortable growing conditions when they blow directly onto the foliage.

How important is humidity?

Melanochrysum can grow in ordinary indoor conditions when its light, watering and root environment are suitable.

Moderately humid air may help maintain comfortable growing conditions, particularly while new leaves are developing, but there is no established species-specific indoor humidity percentage that every grower needs to maintain.

The RHS general Philodendron guide explains that Philodendrons prefer moderately humid air but can also be happy in the lower humidity found in most homes.

A clean humidifier can help when the surrounding air is consistently dry. Keep enough space around the foliage for air to move freely.

I would not rely on frequent misting as the main way to increase humidity. Spraying the leaves provides only a temporary change and does not reliably maintain higher moisture levels in the surrounding air.

Good airflow is also important. High humidity combined with stagnant air and persistently wet foliage can create other problems.

Why can a new leaf struggle to unfurl?

A developing leaf can sometimes remain folded longer than expected. Dry conditions, inconsistent moisture, root stress or physical obstruction may contribute.

Avoid pulling the leaf open by hand. The emerging tissue is delicate, and forcing it apart can cause permanent damage.

Check the growing medium, surrounding conditions and the space around the emerging leaf. Correct any obvious problems gradually and give the leaf time to develop.

Feeding without pushing the plant too hard

Philodendron melanochrysum benefits from nutrients during active growth.

A balanced liquid fertilizer formulated for indoor plants is a reasonable option. Follow the manufacturer’s instructions for dilution and application.

The RHS recommends feeding Philodendrons during the growing season with a general houseplant fertilizer. The exact frequency should follow the product label and take account of any nutrients already present in the potting mix.

There is little benefit in applying stronger fertilizer solutions in the hope of producing larger leaves. Fertilizer supports growth, but it cannot compensate for poor lighting, unhealthy roots or an unsuitable growing medium.

When growth slows, reduce or pause feeding as appropriate for the season and the plant’s condition.

Watch for possible salt accumulation, particularly if you feed frequently. Excess fertilizer salts can affect roots and contribute to leaf-edge damage.

Avoid feeding a plant that is already experiencing serious root problems. Correct the growing conditions first.

Repotting without disturbing established roots

Philodendron melanochrysum does not need to be repotted simply because a particular amount of time has passed.

The decision should depend on the root system and the condition of the growing medium.

Consider repotting when:

• Roots have densely filled the container.
• The potting mix has broken down and become compacted.
• Drainage has become poor.
• The plant dries out unusually quickly because its roots occupy most of the pot.
• The root system has outgrown the available space.

Choose a container only slightly larger than the existing one.

Spring or a period of active growth is generally a convenient time to repot a healthy plant. However, serious root problems should be addressed when they occur rather than waiting for a particular season.

During repotting, handle the roots carefully. Remove clearly damaged or rotten sections using a clean cutting tool, but avoid removing healthy roots unnecessarily.

Because this is a climbing plant, check the support as well. Make sure the pole or board is stable before adding fresh potting mix.

After repotting, return the plant to suitable indirect light and monitor the moisture level while it adjusts. A temporary slowdown in growth does not necessarily mean the repotting has failed.

Why are the leaves changing? Understanding common problems

The foliage provides useful clues about how well Philodendron melanochrysum is adapting to its environment.

However, different problems can produce similar symptoms. Looking at the whole plant is more useful than diagnosing it from one leaf.

Why are new leaves smaller?

Smaller leaves are not always evidence of poor care. A young plant naturally produces foliage that may look different from mature specimens.

However, if successive leaves become progressively smaller, investigate the growing conditions.

Check whether the plant receives enough light and whether its climbing support is suitable. Also inspect the roots for damage and make sure the potting mix is not staying wet for too long.

Avoid trying to correct the problem with additional fertilizer before checking these factors.

What causes brown edges?

Dry leaf edges can have several possible explanations.

Dry air is one possibility, but inconsistent watering, salt buildup and root problems can also affect how much moisture reaches the foliage.

Look at the pattern of damage. If several leaves are developing similar crispy edges, assess the surrounding environment and watering conditions. If the damage is limited to foliage exposed to strong sunlight, sun scorch is another possibility.

Brown tissue will not turn green again, but correcting the underlying problem can help protect newer leaves.

Check for spider mites and scale before they spread

The large leaves of Philodendron melanochrysum provide useful surfaces for inspecting potential pest problems.

The RHS specifically lists scale insects and glasshouse red spider mites as possible pests for this species.

Spider mites

Spider mites are tiny pests that feed on plant tissue.

Early signs may include small pale speckles across the leaves. Fine webbing can appear when an infestation becomes more established.

Inspect the undersides of the leaves and around the growing points. Ordinary spider webs should not automatically be mistaken for spider mite activity.

Scale insects

Scale insects can appear as small, fixed bumps attached to stems and leaves. Some types may also leave sticky residue.

Do not mistake every raised mark for scale. Examine suspicious areas closely before treating the plant.

What should you do if you find pests?

Separate the affected plant from nearby houseplants while investigating the infestation.

Inspect the entire plant, including the undersides of leaves, petioles, stem joints and climbing support.

Remove accessible pests where practical and consider an appropriate treatment specifically labelled for the identified pest and intended plant use.

Always follow the product label. Do not assume that every insecticide or household remedy is suitable for velvet-leaved Philodendrons.

Continue inspecting the plant after treatment because pests can remain hidden around growing points and other difficult-to-reach areas.

Propagating Philodendron melanochrysum from a cutting

Once your plant has developed a healthy climbing stem, propagation is possible through cuttings.

The RHS lists softwood stem-tip cuttings and leaf-bud cuttings as propagation methods for this species.

The most important detail is selecting a section containing a viable node. A node is the point on the stem where leaves, aerial roots and new growth can develop.

A detached leaf with its petiole but no node will not reliably produce a complete new climbing plant through ordinary stem-cutting propagation.

The rooting methods described below are practical options used for climbing Philodendrons. They are not the results of a controlled comparison of water, sphagnum moss and perlite specifically for P. melanochrysum.

Preparing a suitable cutting

Choose a healthy stem section with at least one viable node. A stem-tip cutting includes the growing end of the vine, while a leaf-bud cutting contains a node and its associated bud.

Use a clean, sharp cutting tool and make sure the stem tissue is firm and healthy.

Possible rooting media include:

Water: Allows you to observe root development. Keep the node in contact with the water while the leaf remains above the surface. Replace cloudy or dirty water.

Sphagnum moss: Retains moisture while providing some air around developing roots when prepared properly. Keep it damp rather than saturated.

Perlite: Provides a loose structure with good aeration. Check the moisture regularly so the cutting does not dry out.

Whichever method you choose, avoid leaving the cutting in a saturated environment.

Provide warmth and bright, indirect light while it develops roots. Keep the propagation medium appropriately moist and monitor the stem for signs of deterioration.

There is no fixed timetable for successful rooting. The condition of the cutting, temperature, moisture and light all influence development.

Once the cutting has developed a healthy root system, transfer it into a suitable growing medium and give it time to establish.

Is Philodendron melanochrysum toxic to pets?

Yes. The RHS identifies Philodendron melanochrysum as harmful if eaten and notes that it can irritate the skin and eyes.

Keep the plant where pets and small children cannot chew its foliage. Wear gloves when pruning or taking cuttings, avoid touching your eyes after handling the sap, and wash your hands afterwards.

If a pet eats part of the plant, contact a veterinarian for advice. If a person swallows plant material or develops significant irritation, seek medical advice or contact a local poison service.

Frequently asked questions

Does Philodendron melanochrysum need a moss pole?

It benefits from a climbing support because of its natural growth habit. A moss pole is one suitable option, but a textured board or another stable vertical structure can also work.

The important thing is providing a surface that allows the stem to grow upwards and aerial roots to make contact.

How large can Philodendron melanochrysum grow indoors?

The RHS lists a potential height of 2.5–4 metres and mature leaves measuring approximately 25–75 cm long. These are reference estimates rather than guaranteed indoor dimensions.

The size your plant reaches depends on its age, growing environment, root development and available climbing space.

Why is my Philodendron melanochrysum not producing large leaves?

Several factors may be involved.

Young plants naturally produce smaller foliage. Insufficient light, poor root health, unsuitable growing conditions and a lack of appropriate climbing support may also affect leaf development.

Check the plant’s maturity and overall condition before assuming that one particular factor is responsible.

Can Philodendron melanochrysum grow in ordinary potting soil?

It can grow in a suitable organic growing medium, but dense ordinary potting soil may retain too much moisture when used alone.

A loose mixture containing materials such as orchid bark, perlite or pumice and moisture-retaining organic material is generally a more suitable starting point for indoor cultivation.

The final mix should drain freely while retaining enough moisture for the roots.

Can Philodendron melanochrysum tolerate low light?

It may remain alive in a moderately lit room for some time, but prolonged low light can affect its growth and foliage development.

A bright position with indirect light is a better choice.

How long does Philodendron melanochrysum take to mature?

The RHS lists a time to maturity of approximately 5–10 years. This is a horticultural reference estimate, not a fixed timetable for every indoor plant.

The plant’s growing conditions and overall health influence how quickly it develops.

Is Philodendron melanochrysum suitable for beginners?

It can be grown indoors outside a greenhouse, but it requires attention to its climbing habit and root environment.

Someone new to aroids can learn to grow it successfully, provided they understand its watering needs, provide suitable light and avoid keeping the roots constantly wet.

Growing a healthier Philodendron melanochrysum indoors

The most useful way to approach Philodendron melanochrysum care is to work with its natural climbing growth rather than trying to grow it like a trailing houseplant.

Give the stem stable support, find a bright position with filtered light, and use a potting mix that provides both moisture and air around the roots.

Pay particular attention to watering as indoor conditions change. A pot that dries quickly during active growth may take considerably longer to dry during cooler or darker periods.

My own experience with losing a plant after its growing medium stayed too wet is a reminder not to overlook the roots when caring for this species. Healthy foliage depends on a healthy root system.

Once the basic conditions are right, allow the plant time to mature. Its large, dark, velvety leaves develop through healthy, steady growth rather than a single fertilizer, humidity adjustment or support upgrade.