Philodendron Callosum

Philodendron Callosum Care

Welcome to our guide to philodendron callosum care and propagation…

Philodendron Callosum Care Summary

Light needs:Medium to bright indirect sunlight.
Watering needs:Check weekly in winter, twice a week in summer, water if top half of soil is dry.
Fertilizer:A balanced feed once a month in spring and summer.
Soil:A well draining soil.
Temperature:18°C to 27°C (64-81°F).
Where to buy:Try one of these Rare Plant Shops.
Common issues:Waterlogging, overwatering.


The philodendron callosum is originally from Venezuela is known for its rounded elongated leaves, almost like a hoya, which have a thick rough texture. They look great in a terracotta pot with their tough leaves and gnarly growing pattern when mature.

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Philodendron Callosum Light Needs

Medium to bright indirect sunlight is great.

How Often to Water

Water them when the top half of soil is dry, check them weekly in winter and twice a week in summer.


Use a well diluted, balanced feed in the spring and summer, once a month.


Philodendrons need well draining soil as the roots can rot easily in water logged soil. For more on Philodendron soil see our guide on what to buy or how to make your own: Philodendron Soil.

When To Repot

Repot it when it outgrows its current pot. Be sure to check it in spring to make sure it has plenty of space to grow.

Philodendron Callosum Humidity

50-60% humidity is great, so the higher end or more of normal households. Mist them regularly to keep the humidity high.


18°C to 27°C (64-81°F) is optimal, they’ll do well in your home as long as you keep it away from the cold in winter.

How To Propagate Philodendron Callosum

They can be propagated with cuttings using sphagnum moss, water or soil to root. The nodes are very close together though, so you need to be careful and use a sharp knife to cut precisely between the nodes. You need to let the wounds heal for a half a day or so, then you can root them. I would root them in warm for month or so and then move to soil once it has decent roots. If you use soil or sphagnum moss while rooting, make sure you keep the cutting humid by partially enclosing the cutting and put it in a clear plastic bag or box. For more on propagating philodendrons see our guide here: How To Propagate Philodendron.

Tip: the nodes are very close together so be really careful when taking a cutting, use a sharp knife and make sure you only cut between the nodes.

Philodendron Callosum USDA Zone

They can grow outdoors year-round in zones 9-11.

Is It Toxic To Cats?

They are moderately toxic to cats, causing numbness in the mouth and sometimes vomiting. Seek vets advice if your pet eats any.

Is Philodendron Callosum A Climber Or Crawler?

It is a self-heading plants, giving it a compact growth pattern.

Philodendron Callosum Price

They go for about 80 to 100 Euros in Europe and 50 to 90 USD in the USA at time of writing (August 2022).

Where To Buy

Try one of these Rare Plant Shops.

For more on philodendrons see our philodendron category with all our philodendron care guides.

Philodendron Callosum Care FAQs and Common Problems

The main issues are related to watering, yellowing leaves, dropping and browning can all be avoided by watering the plant properly – check it weekly but do not water it if the soil is mostly wet. The biggest cause of problems is overwatering, they are sensitive souls when it comes to sitting in wet soil!

Other Articles You Might Like

You might also like our other articles: Philodendron Mexicanum Care, Philodendron Atabapoense Care, Philodendron Atabapoense Care.

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Philodendron Callosum Care
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