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Madagascar dragon tree

Dracaena marginata, Asparagaceae

Sources last read 14 September 2026.

Forgiving Among the more tolerant plants here.

Also called dragontree.

Madagascar dragon tree (Dracaena marginata), the whole plant.
David J, CC BY-SA 4.0 · Wikimedia Commons

Madagascar dragon tree is toxic

  • Toxic to cats. Toxic principle: Saponins. Clinical signs: Vomiting (occasionally with blood), depression, anorexia, hypersalivation, dilated pupils (cats). ASPCA
  • Toxic to dogs. Toxic principle: Saponins. Clinical signs: Vomiting (occasionally with blood), depression, anorexia, hypersalivation, dilated pupils (cats). ASPCA
  • Not assessed for people. RHS publishes no harm statement for this plant. That is not a finding of safety: none of the sources read for this site gives an answer either way. Treat it as unknown.

What the sources say about its care

The sources disagree about light for this plant. Both readings are shown in the table below. This is the norm in houseplant advice rather than the exception.

Light

The sources disagree. These do not describe the same conditions: Clemson Extension says "Medium light" and RHS says "Full sun". Both are shown; this site does not pick between them.

Medium light 100–150 fc
Clemson Extension · read 13 September 2026
Full sun
RHS · read 13 September 2026
Water
Well-drained
RHS · read 13 September 2026
Humidity

No source read publishes a humidity figure for any plant on this site. What follows is general guidance for foliage plants.

ASHRAE recommends indoor relative humidity between 30% and 60% 30–60%
Penn State Extension · read 13 September 2026
Temperature

How cold this tolerates, not what it prefers. No source read for this site publishes a preferred range for a plant indoors.

H1B — 10–15°C 10–15 °C
RHS · read 13 September 2026
Soil
Loam; pH Acid or Alkaline or Neutral
RHS · read 13 September 2026
Toxic to cats
Toxic
ASPCA · read 13 September 2026
Toxic to dogs
Toxic
ASPCA · read 13 September 2026
Harmful to people
No statement of harm to people is published for this plant; that absence is not evidence it is safe.
RHS · read 13 September 2026

How it usually goes wrong

Blades hang and feel thin between the fingers

Blades on the Madagascar dragon tree turn dull and soft before any colour changes, and water poured on the dry surface runs straight down the inside of the pot.

With well-drained soil taken past dry, there is nothing left for the roots to move, and the plant gives up its shape before it gives up its colour.

Telling it apart: Push a finger two inches in. Dry all the way down points at thirst; damp points somewhere else.

RHSDiagnose leggy growth on this Madagascar dragon tree
Dry, curled edges on blades near a heater

A yellow halo sits just inside the brown edge on the Madagascar dragon tree, and new blades often come in already tipped with brown during the heating season.

The edges fail first because they are the end of the plumbing. Penn State Extension cites 30% to 60% as the recommended indoor range, and winter heating regularly takes a room under it.

Telling it apart: Whether it crumbles or smears. Crisp is water lost; soft and dark is cold or rot.

Penn State ExtensionDiagnose brown tips and edges on this Madagascar dragon tree
Pale, undersized blades at the tips of the stems

The newest blades on the Madagascar dragon tree are the palest and smallest, and the stems carrying them bend toward the brightest side of the room.

Medium light is where its source places it. Below that the plant spends stored sugar faster than it makes it, and reaching is what that looks like from outside.

Telling it apart: Measure the gap between the newest two leaves against an older pair. Reaching is a change in spacing, not only in shade.

Clemson ExtensionDiagnose yellowing leaves on this Madagascar dragon tree

Not sure which it is? Ask the diagnosis questions for Madagascar dragon tree.

Routine care

Propagation
Sow seed at 18-21°C (64-70°F), or in summer root hardwood and semi-ripe cuttings over bottom heat.
RHS · read 13 September 2026
Pruning
Needs little routine pruning, though weak stems can be cut back to 15cm (6in) in spring.
RHS · read 13 September 2026
Pests and diseases
Under glass, scale insects, thrips and glasshouse red spider mite attack it. Disease is uncommon.
RHS · read 13 September 2026

Move something and watch

Loading the simulator. It needs JavaScript; the care table above does not.

About the plant

Native range
Mauritius
World Checklist of Vascular Plants, June 2026 release, CC BY.
Kew WCVP, filed as Aloe purpurea · read 13 September 2026
Madagascar
RHS · read 13 September 2026
Climate
seasonally dry tropical
World Checklist of Vascular Plants, June 2026 release, CC BY.
Kew WCVP, filed as Aloe purpurea · read 13 September 2026
Growth form
succulent shrub
World Checklist of Vascular Plants, June 2026 release, CC BY.
Kew WCVP, filed as Aloe purpurea · read 13 September 2026
Bushy (evergreen)
RHS · read 13 September 2026
Size
Height 2.5-4 metres; spread 1.5-2.5 metres after 10–20 years
RHS · read 13 September 2026

Other Dracaena

More of the Asparagaceae family

Sources

What this does not cover

The figures above are what published sources say, not measurements of the plant in your room. They say nothing about your pot size, your water, the season, or how far from the glass the plant stands, and those decide more than any figure here does.

Humidity has no species figure because no source read for this site publishes one, and the only temperature published for this plant is a cold floor. The simulator fills those gaps with general figures for its kind of plant, marked as general and listed on how we read sources. Where a toxicity row says the plant was not assessed, that is the absence of a finding and not a finding of safety.

If something is already wrong, the diagnosis tool asks about the soil, the window and the watering, which is where the answer usually is.