Piper guahamense Plant Care

Piper guahamense (Piper guahamense) belongs to the Piperaceae family within the Piper genus. Piper guahamense is native to the Mariana Islands.

Piper guahamense displays a bushy, upright shrub growth habit, reaching up to 3 ft tall with a spread of approximately 2 ft. Piper guahamense produces tiny, white spikes surrounded by green bracts.

Leaf size: approximately 6 inches.

Water a young or newly planted Piper guahamense every 7–14 days, soaking the whole root zone, until it is established — usually one to two growing seasons. Established shrubs mainly need water during long dry spells. In a container, water whenever the top few centimetres of soil are dry.

Piper guahamense thrives in bright indirect light. Avoid placing Piper guahamense in direct, harsh sunlight for extended periods, as this can scorch the foliage.

Piper guahamense tolerates temperatures of 65–80°F. Piper guahamense prefers humidity levels of 50–70%. A pebble tray or humidifier helps maintain adequate moisture around the plant.

Rich, well-draining soil with high organic matter content. Good drainage is essential for Piper guahamense to prevent waterlogging, which leads to root rot and fungal issues.

Feed Piper guahamense every 4 months during the growing season with a balanced, slow-release fertilizer at the rate on the label. Established shrubs in good soil often need little extra feeding, so let weak growth or pale foliage guide you.

Stop feeding by late summer so new growth can harden before winter.

The PlantoScan app can remind you when to water and when to fertilize each plant.

Choose a spot with bright indirect light and rich, well-draining soil with high organic matter content. Avoid low spots where water collects after rain.

Piper guahamense is suited to USDA Zone 13b.

Plant container-grown or balled-and-burlapped shrubs in spring or early autumn, setting the root flare at soil level, and water well after planting.

Piper guahamense can spread to about 2 ft (0.6 m) and reach about 3 ft (1 m) tall. Space plants about 2 ft (0.6 m) apart so mature crowns don't crowd each other, and plant at least half that distance from buildings, fences and paths.

Planning a row or hedge? Try the plant spacing calculator.

Prune Piper guahamense while it is dormant in late winter: first remove dead, damaged and crossing branches, then thin lightly for shape.

If it flowers in spring, prune right after flowering instead so you don't remove next year's buds. Never take off more than about a quarter of the shrub in one year.

Piper guahamense is frost-tender (hardy to USDA zone 13). In colder areas grow it in a container and move it to a bright, frost-free place before the first frost.

Piper guahamense can be propagated through stem cuttings, air layering, division. Similar propagation techniques also apply to hoja santa plant care, which shares the same genus.

See all plants toxic to cats and plants toxic to dogs.

Piper guahamense is susceptible to spider mites, mealybugs, scale insects. Inspect the foliage regularly, especially along leaf undersides and stems. Treat infestations promptly with insecticidal soap or neem oil to prevent spread.

Yellow leaves, brown tips or drooping? See common plant problems and how to fix them.

Piper guahamense grows outdoors in USDA Zone 13b. It survives winters down to planting zone 13b. Piper guahamense is native to the Mariana Islands. In cooler regions, grow Piper guahamense as a houseplant or bring it indoors before the first frost.