Plumosa Fern
Asparagus setaceusalso Asparagus plumosus

Plumosa Fern

Bright indirectModerateToxic to pets
6078°FComfort range
HighHumidity
Background

Despite its name and delicate appearance, the plumosa fern is not a true fern — it's a member of the asparagus family, with flattened branchlets so finely divided they look like feathery fronds. The effect is almost ethereal: cascading layers of soft, bright green that trail beautifully from a shelf or hanging basket.

It wants consistent moisture and humidity more than most succulents but less rigidity than a true fern — which makes it slightly forgiving of an occasional dry spell, as long as you don't let it go crispy. The long, arching stems can become vining and scrambling with age; trim them back to keep it full and bushy, or let them run along a support for a wilder look. Like all asparagus relatives it can eventually produce tiny white flowers and small berries — ornamental, but worth removing if pets are around.

Bright indirect light keeps the fronds fine and feathery; direct sun scorches the delicate foliage, and deep shade makes it sparse and leggy.

Care at a glance
LightBright indirect
WaterEvery 5–7 days; keep lightly and evenly moist
Soil mixRich, well-draining potting mix with added perlite or bark
HumidityHigh
Temperature60–78°F
DifficultyModerate
HabitTrailing
Mature sizeTrails or climbs 2–4 ft; older plants can reach 6 ft on a support
PropagationDivision at repotting, or from seed (slow)
Watering & safety
How to water

Water thoroughly and drain; never let it sit in a saucer

Drought tolerance

Low — keep to a consistent rhythm and don't let it dry out hard.

Toxicity

Berries and foliage are toxic to cats, dogs, and humans — causes gastrointestinal upset and skin irritation. Keep away from pets and children.

The routine

Keep lightly and evenly moist; water before the top dries fully

every 5–7 days

Feed with a balanced liquid fertiliser

monthlyGrowing season

Maintain high humidity with a pebble tray or grouping; mist occasionally

Trim long vining stems to keep it full and bushy

Yellowing and needle drop means too dry, too little light, or too much direct sun

Divide and repot when the tuberous roots fill the pot

every 1–2 years
Watch for
Spider MitesMealybugsScale