Philodendron Pastazanum Care: #1 Tips For a Thriving Plant!

The Philodendron Pastazanum is a rare plant sought after by plant collectors all around the world. If you’re lucky enough to get your hands on this beautiful plant, then you need to make sure you are properly caring for it.

From proper humidity levels to choosing the best nutrient-rich fertilizer, getting to know your plant’s needs is essential for its growth. Follow this in-depth Philodendron Pastazanum care guide to learn more about how to keep your new houseplant alive and thriving.

What Is a Philodendron Pastazanum?

Pronunciation: fil-uh-den-drun pah-stah-zah-numb

Appearance: The Philodendron Pastazanum is known for its lush green leaves. The plant’s attractive leaves not only look glossy, but have a glossy texture too.

This plant is a crawler, meaning it grows not only up, but out, and its aerial shoots grow laterally along the ground.

Origin: The P. Pastazanum was first collected in the 1970’s in a region known as “Pastaza” in the country of Ecuador. It thrives in tropical climates and can be found in not only Ecuador, but Peru as well.

Rareness: The P. Pastazanum is a very rare plant.

Related Post: 11 of the Rarest Philodendrons – The Rare, Ultra Rare & Most Endangered

Other names: The Philodendron Pastazanum doesn’t go by any another scientific or common names. The only other name it might be occasionally known as is the “Philodendron Pastazanum K. Krause.”

Varieties: There are a few other varieties of this plant, and their main differences are their coloring. Here are a couple of the most common varieties:

  • P. Pastazanum Silver
  • P. Pastazanum White

Your Complete Philodendron Pastazanum Care Guide

Now that you have one of these rare plants, it’s important that you follow the proper Philodendron Pastazanum care guides to keep it happy and healthy.

  • Light: bright, indirect light
  • Soil: well-draining
  • Watering: when soil is partially dry
  • Humidity: 65% or higher
  • Temperature: 60-85 F
  • Fertilizer: regularly, during warmer months


Like all Philodendron varieties, your P. Pastazanum requires bright, indirect light.

This means you shouldn’t keep your plant in any place where the harsh afternoon sun can scorch its leaves.

Avoid the following locations:

 East facing window
 West facing window
 Unshaded areas if kept outside

If you’re unsure of the amount of light your plant is getting and wondering if it’s too little or too much, then invest in a light metering tool.

These tools are extremely helpful when it comes to measuring the Foot-candles (FC) your plant is being exposed to. Generally, these are the amount of FC you should strive for:

Good growth FC: 200
Minimum FC for growth: 100


The P. Pastazanum requires a well-draining soil mix. The soil mix should have chunky material such as orchid bark in it to help promote water drainage.

If you plan on buying premade soil in the store, try to find one that’s specifically made for aroids and has a pH level from either 5 to 7.

If you plan on putting together your own aroid well-draining soil mix, then try out this combination:

 60% Coco Coir
 10% Orchid Bark
 30% Perlite or Pumice


You should only water your plant’s soil when it is dry.

With that being said, you should never let your plant’s soil become extremely dry, and then overwater it. Philodendrons are very specific about their water intake, and need a soil check conducted daily.

A soil check is a quick way to tell if your P. Pastazanum needs watering or not. Simply place your fingers on the soil and feel for moisture.

If the soil is still damp from the last time you watered it, then the plant doesn’t need any more water for now.

However, if the soil is becoming dry and has very little moisture left, then water the soil until it is evenly damp.

Signs of underwatering: yellowing leaves
Signs of overwatering: wilting leaves


Since the Philodendron Pastazanum originates in characteristically tropical climates, it’s only natural that this plant craves warmer temperatures.

The best temperatures to regularly keep your plant exposed to are between 60 to 80 degrees Fahrenheit.

If you live in warmer climates that see temperatures of at least 65 degrees year-round, then it’s possible for your plant to thrive outside.

If you live in cooler regions or just want to make your P. Pastazanum a houseplant, then rest assured this plant can do great in indoor temperatures.

Make sure your plant is never exposed to temperatures under 50 degrees, as this can harm the plant’s growth.


Just as this plant prefers warmer temperatures, it also prefers high humidity.

Give your P. Pastazanum a minimum of 65% humidity at all times to promote growth. Here are some quick an easy ways you can add more humidity into your home:

 Group plants closer together (improves humidity through a process known as transpiration)
 Mist leaves with filtered water
 Fill a pebble tray with water and place it beneath your plant
 Buy a humidifier and preset the humidity

Luckily, if your plants are not getting enough humidity it will try to tell you. A telltale sign your P. Pastazanum needs more humidity is if the leaves begin to droop.


Liquid fertilizers or slow-release fertilizers are ideal for the P. Pastazanum. The fertilizer should have an even ratio of phosphorous, potassium, and nitrogen.

The best time to fertilize is in the summer and spring months, but never in the winter and late fall months.

Even during the growing season (summer and spring months) you should fertilize the soil only about once a month for the best results.

Growth – What to Expect

How Big Does a Philodendron Pastazanum Get?

As an indoor plant, your P. Pastazanum will average between 3 to 5 feet tall once mature. Since it’s considered to be a crawler, it will also spread about 4 to 6 feet in width, depending on the space.

Does the P. Pastazanum Produce Flowers?

The P. Pastazanum produces an inflorescence once mature. It can be around 4 to 6 inches long and is a mix of a stunning red and white.


Stem cuttings are the best method of propagation for your plant.


The best pot for you new houseplant is one with a rectangular shape. Since it’s a crawler, a rectangular pot will give the plant the room it needs to spread its roots and grow.

When it comes to repotting your plant, you should do it very rarely. Only repot when you notice that the roots are beginning to poke through the pot’s drainage hole.

Make sure to repot in another long, rectangular pot that is only about 2-3 inches wider, longer, and deeper.


Your P. Pastazanum does not need pruned. The only time you may need to prune your plant is if a leaf is shriveled and dead from failure to practice the proper Philodendron pastazanum care practices.

If this occurs, sanitize clippers in isopropyl alcohol and snip away the dead leaf at the node.

Plant Toxicity

Humans: highly toxic

Animals: highly toxic

Philodendrons are known for their high toxicity. When any part of the plant is ingested, negative health issues can occur such as a swollen tongue and throat.

Always keep your plant in an area where small children and pets can’t reach it.

Common Pests & Diseases

There are times in your plant’s life where it may become prey for pest and diseases. Here are some of the main pest you should look out for:

  1. Spider Mites
  2. Mealybugs
  3. Scale
  4. Thrips
  5. Whiteflies

The best way to remove pests is by filling a spray bottle with neem oil and misting the infected areas to kill the pests.

Diseases such as leaf spot and root rot are also common in this plant. To prevent these from happening, don’t overwater or underwater your plant.

Additionally, make sure that the leaves aren’t saturated with water caused from too much misting, or as a result of watering late at night.

Philodendron Pastazanum Care Guide FAQ

Can Philodendron Pastazanum Handle Low Light?

A P. Pastazanum requires regular bright, indirect light to thrive. It can only handle low light for a very minimal time if need be, but should not be exposed to only low light on a daily basis.

Is Philodendron Pastazanum a Crawler or Climber?

This plant is considered to be a crawler. This means that the stem of the plant grows along the surface of the soil.

Philodendron Pastazanum vs Philodendron McDowell – What’s the Difference?

The biggest difference between these two Philodendron types is that the P. McDowell has pointier leaf tips.

Philodendron Pastazanum vs Philodendron Gloriosum – What’s the Difference?

The P. Pastazanum has a v-shaped sinus, while the Philodendron Gloriosum does not. Also, the P. Gloriosum has branch veins that appear white its entire life, but a P. Pastazanum’s branch veins lose their white color once they reach maturity.

Philodendron Pastazanum vs Philodendron Mamei – What’s the Difference?

These two plants have a similar leaf shape, but their coloring is noticeably different. Like the P. Pastazanum, the Philodendron Mamei has green leaves. However, the P. Mamei also has light greenish tones throughout the leaf that make it noticeably different.

photo of Charlotte Bailey founder of Oh So Garden


Charlotte Bailey

Charlotte is a Qualified Royal Horticultural Society Horticulturist, plant conservationist, and founder of Oh So Garden. Armed with a background in Plant Science (BSc Hons, MSc) and 5 years of hands-on experience in the field, her in-depth guides are read by over 100,000 people every month.

For her work, she's been awarded the title of Yale Young Global Scholar, and been featured as a garden and houseplant expert across major networks and national publications such as Homes and Garden, Best Life, Gardeningetc,, BHG, Real Homes, and Country Living. You can find her on Linkedin.

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