Pilea pubescens 'Silver Tree'

Native range and cultivation history

Under the name Pilea pubescens, Silver Tree is connected to a species ranging from Mexico through Central America and the Caribbean into tropical South America. Across that broad range, the species occurs in both seasonally dry and wet tropical settings.

Horticulture has also circulated the cultivar as Pilea spruceana ‘Silver Tree’, a name that points to a western South American species. The name Silver Tree has therefore moved between two Pilea species in cultivation, explaining why either label may appear on this dark, quilted plant with a silver centre.

Growing a container tree or shrub

Light: Pilea ‘Silver Tree’ grows best in bright, filtered light. Strong midday sun can scorch its thin, textured leaves, while low light stretches the stems.

Roots and substrate: Use an open, humus-rich substrate that remains moderately moist but retains air after watering. Repeated severe drying damages the soft foliage, while continuous saturation can collapse the roots and stem base.

Feeding and propagation: Feed at low strength while compact new shoots are developing. Stem cuttings root readily when they contain a node, and established clumps may also be divided.

Common problems and solutions

Low light produces longer stems and less distinct silver contrast, while direct sun leaves fixed pale or tan patches on the exposed leaves. Move the plant gradually and wait for compact new growth before pruning stretched stems. Existing stretched growth and scorch marks will not return to their former appearance, so they should not be used to judge if the new position is working.

Dry brown edges differ from dark or water-soaked spots that continue to expand. The latter can develop when textured leaves remain wet with poor airflow. Remove heavily spotted leaves, keep healthy foliage dry and separate the plant while monitoring. A translucent or darkening stem base suggests developing rot, often after the mix has remained wet and airless. Take firm stem cuttings that include a healthy node, the point where leaves and new shoots develop, before collapse travels into the healthy shoots.

The natural silver pattern follows the leaf's structure. Pest damage appears as irregular pale feeding marks, distorted tips, dark specks or webbing. Inspect the undersides closely, especially where leaves overlap. After isolating confirmed mites or thrips, remove heavily damaged foliage and apply a treatment suitable for soft leaves. Avoid leaving dense leaves soaked after treatment, and look to new growth for evidence that feeding has stopped.

Pilea pubescens 'Silver Tree' is non-toxic to people and pets

• This plant is not considered toxic to humans, cats or dogs.
• No toxic substance or meaningful plant-based physical hazard is documented for this plant.
• Eating a large amount of any plant material can still cause stomach upset. Contact a veterinarian or medical professional if symptoms are significant or persist.

The meaning and history of Pilea pubescens

Pilea alludes to a felt cap through Latin pileus, referring to the small cap-like flower structure over its dry fruit. The Latin epithet pubescens means becoming downy and refers to fine hairiness on the plant.

John Lindley established the genus Pilea in 1821 in Collectanea Botanica, plate 4.

Frederik Michael Liebmann first described Pilea pubescens in 1851 in Mexicos Neldeagtige Planter, page 18.