Philodendrons belong to one of the most diverse genera in the plant world, with nearly a thousand species native to the tropical rainforests of Central and South America. In their natural habitat, they grow beneath the dense canopy of forest trees, either creeping along the forest floor or climbing tree trunks with the aerial roots that make them such effective indoor climbers. This origin tells you almost everything you need to know about how to care for them: they want warmth, humidity, indirect light and the kind of consistent but not excessive moisture that the forest floor provides.

At South African nurseries, philodendrons have become some of the most widely available and popular tropical houseplants, for good reason. They are relatively forgiving, genuinely impressive in the range of leaf shapes and patterns they offer, and adaptable to the indoor conditions most homes provide.

Understanding the two growth habits

Before discussing care, it is worth identifying what type of philodendron you have, since the two main growth habits have different space requirements. Climbing philodendrons use aerial roots to attach to surfaces in their natural habitat and need a moss pole, trellis or stake to climb indoors. Without support, they become leggy and less vigorous as they search for something to grasp. The heartleaf philodendron, several variegated types and some of the more dramatic large-leafed climbing species all fall into this category. Providing a moss pole is not merely aesthetic: it genuinely improves growth vigour and leaf size.

Crawling or self-heading philodendrons, in contrast, spread horizontally rather than climbing. These need a wide, shallow container to accommodate their growth pattern and do not require any pole or support structure.

Light

Philodendrons thrive in bright, indirect light that mimics the dappled conditions beneath forest canopy. In South African homes, a north-facing window is ideal for maximum ambient light without direct sun. East-facing windows provide gentler morning light that suits most philodendron types well. Direct midday or afternoon sun causes bleaching, scorching and faded colours.

Variegated varieties require more light than their all-green counterparts to maintain their patterns. A philodendron that is losing its variegation is telling you it needs a brighter position or supplemental grow lighting.

Watering

Overwatering is the most common cause of philodendron decline. Water thoroughly when the top five centimetres of soil feel dry to the touch, then allow the soil to partially dry before the next watering. Water thoroughly until it drains from the bottom, then discard excess from the saucer: philodendrons do not tolerate sitting in water.

Use room-temperature water where possible. Allow tap water to sit uncovered overnight before using it to reduce chlorine and fluoride, which can cause brown leaf tips over time.

Soil and potting

A well-draining potting mix that retains some moisture without becoming waterlogged suits philodendrons best. A standard potting mix improved with perlite or bark to improve aeration and drainage provides the right conditions. Avoid dense soils that compact around the roots. Repot every one to two years when roots emerge from the drainage holes or growth slows noticeably, choosing a pot one to two sizes larger than the current one.

Propagation

Philodendrons are among the easiest houseplants to propagate from stem cuttings. Take a cutting with at least one node using clean, sterilised scissors or a knife. Place the cutting in water, damp sphagnum moss or perlite to root, in a warm position with indirect light. Change the water weekly if using the water method. Once roots reach approximately five centimetres, transfer to a potting mix and maintain moderate moisture while the root system establishes. Propagation is most successful in spring and summer when the plant is actively growing.

Toxicity

Philodendrons are toxic to cats, dogs and children if ingested. They contain calcium oxalate crystals that cause oral irritation, excessive drooling and gastrointestinal upset. Place them out of reach of pets and children or choose a pet-safe alternative if this is a concern.

Common problems

Yellowing leaves most commonly result from overwatering, poor drainage or, for older lowest leaves, natural ageing. If multiple leaves yellow simultaneously, check the soil moisture and root health. Brown leaf tips typically indicate low humidity, underwatering or fluoride sensitivity from tap water. Drooping leaves usually signal either overwatering, causing root rot and reduced water uptake, or underwatering, causing dehydration. The soil state will tell you which. Spider mites, mealybugs and aphids are the most common pests: treat with neem oil or insecticidal soap at the first sign, isolate the affected plant and increase humidity to deter spider mites specifically.

ALSO SEE:

A detailed gardener’s guide: How to take care of young snake plant pups 

Featured Image: Pexels