Philodendron White Knight Care Guide: Your Next Favorite Houseplant

If you enjoy unique houseplants that are not too demanding, the philodendron white knight might be the perfect choice. This lush and beautiful tropical plant is one of the easiest to grow at home or in the office. 

It is low-maintenance and features striking foliage that adds a splash of unexpected color to any space. Initially a rare find, it is now cultivated commercially, making it accessible and affordable. 

Its stunning leaves and easy care routine are rapidly boosting its popularity.

Philodendron White Knight Care Basics

Philodendron 'White Knight' plant leaf

Originating from South America, the white knight philodendron boasts variegated leaves that blend shades of green and white. The stems are typically purple, sometimes appearing almost black. 

This philodendron erubescens variety features large, heart-shaped leaves with a smooth, glossy texture. It can display various patterns of white variegation, including white blotches or stripes. 

Its thick stems facilitate easy climbing on a trellis or pole, potentially reaching about 10 feet with vertical support. However, if preferred, you can prune the stems to encourage bushier growth.

The plant thrives in environments resembling its native habitat at the bottom of rainforests – warm, humid areas with abundant filtered light. It prefers moist soil and requires substantial nourishment. 

Ideal growth occurs at temperatures between 65 and 80 degrees Fahrenheit; exposure to temperatures below 55 degrees Fahrenheit can cause permanent damage. 

To ensure optimal humidity levels, consider utilizing a humidifier or situating the plant in a brightly illuminated bathroom where the moisture levels are naturally elevated. A humidity level of 70% or higher is optimal.

Distinguishing features of the white knight philodendron include smaller foliage than the philodendron White Wizard variety and rounder leaves than the white princess variety.

White Knight Soil

Philodendron White Knight

Choose well-draining soil for your plant. Water it once the top inch of soil dries out. 

To achieve airy, well-draining soil, incorporate sand or gravel. Mix orchid bark, coco coir, peat moss, or perlite into a quality potting mix. Adding compost is also beneficial as these plants thrive in soil rich in organic material.

Only nourish your plant in spring and summer growth periods, employing a well-balanced liquid fertilizer monthly. Avoid fertilizing in fall and winter to prevent over-fertilization, which can harm the plant.


Water the plant when the top inch of soil feels dry, maintaining a generally moist soil condition without waterlogging the roots, which can lead to root rot. During winter, reduce the watering frequency.

Ensure the soil remains evenly moist, possibly requiring weekly watering during growth seasons, depending on the humidity level in your home.

Light Requirements

Being native to the lower rainforest regions, the plant thrives in bright, indirect light, similar to the filtered sunlight it receives in its natural habitat. 

Steer clear of direct sunlight to avert leaf scorching. Prime spots for placement are near western, northern, or eastern-facing windows. Use blinds or curtains to moderate the sunlight reaching the plant if necessary.

Pruning Your White Knight

Pruning is minimal but essential to remove diseased areas, dead leaves or stems, or discolored foliage. Regular pruning helps maintain a desirable size and prevents legginess. 

Use clean, sharp shears to prevent tearing the plant. Pruning can be done at any time of the year, focusing mainly on spring and summer growing months.


The growth rate of your white knight philodendron depends on its environment.

Repot the plant approximately every one to two years to prevent it from becoming root-bound, especially when you notice roots emerging through the drainage holes or appearing on the soil surface. 

Ideally, repotting should be undertaken in the spring, utilizing a container 1 to 2 inches more prominent than the existing one. Ensure proper drainage by placing rocks or gravel at the bottom of the new pot, followed by potting soil enriched with organic materials.


To propagate, take a cutting from the existing plant, strip away any leaves, and place it in water to grow roots. 

When the roots extend to 1 to 2 inches, transfer the cutting into soil that drains well and place the new pot in a luminous space where it can receive diffused light.


Despite its aesthetic appeal, the white knight philodendron harbors a danger due to its high concentration of calcium oxalate crystals, making it toxic to humans and pets. 

Prevent ingestion by children or pets, and consult a veterinarian if your pet consumes any part of the plant.


Generally resistant to diseases, the plant can suffer from root rot or leaf spot due to over-watering or excessive sunlight exposure, which can cause leaf scorching. Maintain proper care to keep your plant healthy and vibrant.


Be vigilant for pests like mealybugs, aphids, and fungus gnats. Regularly inspect your plant during watering and use pest-control products as per manufacturer instructions if necessary.

The white knight philodendron is a simple yet rewarding way to enhance your home with a tropical touch. Its minimal care requirements and striking appearance make it a proud addition to any indoor garden.

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Davin is a jack-of-all-trades but has professional training and experience in various home and garden subjects. He leans on other experts when needed and edits and fact-checks all articles.