Aglaonema rotundum
Aglaonema rotundum (Sumatran Aglaonema) Care Guide
Featured photoaglaonema-rotundum.jpgAglaonema rotundum, sold as Sumatran Aglaonema, is a member of Araceae, the aroid family of about 3,800 species across the tropics. A Sumatran Aglaonema with very dark green almost-black leaves marked by bright pink veins. One of the more strikingly coloured species in the genus and a parent of many modern pink-veined cultivars. Like most cultivated aroids it tolerates lower light than flowering plants, prefers consistent moisture, and propagates by division of the rhizome or by stem cuttings.
Care facts at a glance
- Light
- Bright indirect
- Water
- Water when the top 3 cm of mix has dried.
- Humidity
- 50–70 %
- Temperature
- 18–27 °C
- Soil
- Standard houseplant mix with added perlite for drainage.
- Origin
- Tropical Americas and south-east Asia depending on genus.
- Mature size
- 30 to 90 cm tall depending on species.
Overview
Aglaonema rotundum sits in Araceae, the aroid family that produces a spathe-and-spadix inflorescence — a single bract subtending a column of small flowers. A Sumatran Aglaonema with very dark green almost-black leaves marked by bright pink veins. One of the more strikingly coloured species in the genus and a parent of many modern pink-veined cultivars. The family contains both giant tropical climbers and tiny ground-cover species, sharing the spathe morphology even when leaf form varies dramatically.
Care Priorities
- Bright filtered light, never direct midday sun.
- Standard houseplant mix with extra perlite.
- Water when the top 3 cm of mix is dry.
- Wipe leaves occasionally to keep stomata clear.
Common Problems
Yellow lower leaves usually indicate overwatering. Brown leaf tips signal cold drafts, dry air, or fluoride-heavy tap water. Sticky residue on leaves is a sign of mealybugs or scale on the stem.
Sources & further reading (2)
- encyclopedia — accessed 2026-04-29
- botanical-garden — accessed 2026-04-29
Frequently asked questions
Why are the veins so pink?
A. rotundum carries genetic pigmentation that produces bright pink venation against the dark green-black leaf base. The trait is species-typical and has been used by hybridizers as a parent for modern Aglaonema cultivars with similarly intense vein colouring.
How often should I repot?
Most cultivated aroids prefer to stay slightly root-bound. Repot every 2 to 3 years in spring, sizing up only one pot diameter at a time. Frequent repotting checks growth and stresses the rootball.
Why are the leaves yellowing?
Yellow lower leaves on Araceae are usually overwatering. Reduce watering frequency and let the mix dry more thoroughly between waterings. Yellow upper leaves suggest nutrient deficiency or root issues.
