Light
Bright indirect • approx. 10,000–20,000 lux




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Piper sp. Kalimantan 'Watermelon'
Light
Bright indirect • approx. 10,000–20,000 lux
Watering
Water when ~20–35% dry
Substrate
Moisture-retentive but aerated • Evenly moist • Organic-leaning • Fine-medium
Temperature
Ideal: 18–27 °C • Avoid below: 15 °C
Humidity
Humid 60–80 % +
Growth habit
Climbing or trailing pepper vine.
Support
recommended
Growth speed
High
Max size indoors
Max. height with support: 200 cm • Max. spread: 100 cm
Toxicity & safety
Pet safety unconfirmed
Origin & habitat
Undescribed Piper species from Kalimantan, Borneo
Outdoor growing
Indoor only
These care values are quick reference points for indoor growing. Use them as a guide, then adjust for pot size, substrate, temperature and how quickly the substrate dries.
For more detail, read the full product description or visit our Plant Care Guides.
Piper sp. Kalimantan 'Watermelon' is a striking, highly textured climbing species from Borneo with deep green, heart-shaped leaves veined in silver that resemble the rind of a watermelon. The surface is puckered and velvety, and the foliage shifts in tone depending on humidity and light levels. Unlike most decorative climbers, this Piper stays relatively compact while producing dramatic leaves with a satin finish and strong contrast. It clings naturally with aerial roots and thrives when allowed to climb or shingle upward, mimicking its rainforest habitat. This plant is rare in cultivation and delivers maximum texture in minimal space.
This plant belongs to the genus Piper, which includes over 1,000 species native to tropical regions. This particular unidentified species originates from the lowland rainforests of Kalimantan, the Indonesian part of Borneo. It grows in shaded, humid forest understories with stable temperatures around 24 – 30 °C and very high humidity year-round. As an epiphyte or hemi-epiphyte, it clings to tree bark using fine aerial roots and slowly creeps or climbs in low light conditions.
Piper sp. Kalimantan 'Watermelon' is not listed as toxic but is best kept out of reach of pets and children due to lack of toxicity data.
This Piper does best when mounted or grown with vertical support to mimic its natural climbing behavior. 'Watermelon' is a collector's plant – slow growing but incredibly rewarding when its conditions are met. If grown as a shingler on a plank or cork mount, the leaves may flatten and increase in size. Stable warmth, filtered light, and very high humidity are key to maintaining the dramatic texture and bold contrast that define this variety.
Piper comes from the Latin word for pepper and refers to the same genus that includes black pepper. The species in question has not yet been formally described and is referred to as a sp. (species) from Kalimantan. The cultivar name 'Watermelon' refers to the resemblance between its foliage pattern and the outer skin of a watermelon.
If you’re into rare, high-texture climbers that bring rainforest vibes to your space, Piper sp. Kalimantan 'Watermelon' is one of the most rewarding finds. Order now and grow something truly special.
Plant names, growth habits, natural habitats and indoor care guidance are checked against trusted botanical, habitat and horticultural references before publication.View our plant care resources and references.
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