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Full Specimen Plate

Begonia sp. 'Julau'

Name: Begonia sp. 'Julau'
Brand: Begonia

Julau Pink Spotted Begonia

LightLow to medium indirect light (100-180 foot-candles)

Humidity80% to 95% RH

Temperature20-25 C; sensitive to heat above 28 C

Size10-18 cm height, leaf blades up to 12 cm

Growth RateSlow

DifficultyAdvanced

Recommended Gear

Natural Rooting Powder, 3 x 75gRooting hormone powder for stem and leaf cuttings.
Precision Bonsai Pruning Scissors, 200mmFine-bladed snips for clean node cuts when taking a cutting.
Digital Hygrometer & ThermometerLCD humidity and temperature gauge for checking a grow spot against a plant's target range.

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WildJulau district, Sarawak, Malaysian Borneo (shaded sandstone ravines)

7cm Target Price

£53.00

EstimatedFewer than 3 recorded sales. The figure comes from retail stock or the genus price tier, so treat it as a rough guide.

Target Price Guide

Select Plant Size

7cm Target Price

Base

£53.00

EstimatedFewer than 3 recorded sales. The figure comes from retail stock or the genus price tier, so treat it as a rough guide.

No UK sold listings recorded yet. This figure comes from retail stock or the genus price tier.

About this target price: The figure above is the current market rate for an established 7cm whole pot specimen. Other sizes show their own recorded sale price where enough recent sales exist, or an estimate calculated proportionally from this one otherwise.

See full auction data ↓

Retail Price?The average price across tracked UK retailers (nurseries and specialty stores).

Not tracked

Not currently stocked by tracked UK retailers

How prices are calculated: The target price uses online sold listings converted to GBP at current exchange rates, excluding extreme outliers to ensure a fair-value guide. Falls back to UK retail average when auction data is unavailable.

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Description Market Propagation Care Guide In the Wild Field Notes

Begonia sp. 'Julau' Morphology

leaf ShapeAsymmetrically ovateEgg-shaped leaves, with the wider end near the base. to cordateHeart-shaped foliage, featuring a rounded notch (sinus) where the leaf stem attaches. with an acute tip

leaf Length6-12 cm

leaf Width4-7 cm

petiole ColorTranslucent wine red with fine white hairs

venationPalmate-pinnateVeins or lobes arranged like a feather, branching out symmetrically on both sides of a single main central vein. venation obscured by dark pigmentation

textureGlossy and waxy

variegationBright pink circular spots distributed across dark lamina

growth HabitCreeping rhizome anchoring via fine fibrous roots

About Begonia sp. 'Julau'

Begonia sp. 'Julau' is an undescribed trade species originating from the Julau district in Sarawak, Malaysian Borneo. Circulated under the collection code U683, it inhabits shaded sandstone ravines with continuous high atmospheric moisture. The plant is identifiable by its dark bronze-black glossy leaves decorated with bright pink circular spots and red-flushed petioles. Due to its extreme sensitivity to foliar moisture and low humidity, it is cultivated almost exclusively in sealed terrarium environments.

Native Range

Sarawak, Malaysian Borneo

Market Hub

Begonia sp. 'Julau' Sold Prices & Live Market

What the Target Price above is based on: eBay sold prices by plant size, live listings, and retailer stock.

No eBay sales recorded yet. Sold listings are collected as they appear on eBay.

Before You Buy

Species-specific things to check when evaluating a listing

Verify the specimen is acclimated to terrarium conditions with firm leaf margins
Inspect the rhizome for healthy red-green tissue free of fungal mold
Confirm pink spots show sharp contrast against the dark lamina
Ensure the plant is packed with moisture domes during shipping

Propagation Guide

How to Propagate Begonia sp. 'Julau'

Methods

Leaf wedge cutting in closed containers Petiole cutting Rhizome division

Propagation Difficulty

Advanced?Advanced

Time to Establish

12-16 weeks

True From Cuttings

Yes

Cultivar character is preserved through vegetative cuttings

Place leaf segments on sterile damp kanuma or sphagnum inside a sealed cloche; prevent water droplets from sitting on the leaf surface.

Care Guide

Begonia sp. 'Julau' Care Guide & Growing Conditions

Substrate

Porous acidic mix of Japanese kanuma, chopped live sphagnum, pumice, and tree fern fiber

Watering

Sub-irrigate to keep substrate damp; never apply water directly onto the Julau crown or foliage

Humidity

Maintain 85% to 95% relative humidity in an enclosed terrarium with gentle internal air circulation

Fertilising

Apply ultra-dilute liquid fertilizer at one-tenth strength once monthly to protect sensitive Julau roots

Repotting

Rarely required; refresh surrounding moss every 18 months without disturbing roots

Common Problems

Problem

Bacterial leaf melting

Cause

Standing water droplets on spotted leaf blades inside a stagnant terrarium

Fix

Increase internal fan circulation and trim affected tissue with a sterile blade

Problem

Fading of pink spots to dull white

Cause

Excessive light intensity degrading foliar anthocyanin pigments

Fix

Reduce lighting levels to below 150 foot-candles

Field Reference

In the Wild

Field Notes

12 September 2026

Field Notes: The Cryptic Herb of Julau

Known to hobbyists by the collection code U683, Begonia sp. 'Julau' was collected from Sarawak's Julau district in Borneo. It occurs in deep microclimates along sandstone stream valleys, sheltered under dense canopy cover. While several Bornean begonias have spotted leaves, the specific combination of dark bronze-black foliage with vibrant pink maculation distinguishes this unclassified taxon. It remains undescribed in formal botanical literature.

Written at AroidAtlas research station— Aroid Atlas

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