Philodendron radiatum
Philodendron radiatum
Radiate Philodendron
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Taxonomy
Family Araceae · Genus Philodendron
Description
Philodendron radiatum is a bold, climbing aroid with dramatic, hand‑shaped leaves that split into finger‑like lobes as it matures. Give it a sturdy support, bright filtered light, and a chunky mix, and it rewards you with fast, lush growth and a tropical vibe.
Common Names
Radiate PhilodendronHand-Leaf PhilodendronFinger-Leaf PhilodendronPhilodendron Radiatum
Context
nativeRegion
Tropical forests from southern Mexico through Central America.
usdaZones
10–12 outdoors (frost-free); commonly grown indoors elsewhere.
companionPlants
Monstera deliciosa, Scindapsus pictus, Anthurium species, Calathea (Goeppertia) species, Nephrolepis exaltata (Boston fern)
culturalUses
Primarily ornamental for interior landscaping and tropical gardens; valued for bold, sculptural foliage.
Care
Care Requirements
LightBright, indirect light; tolerates medium light. Avoid harsh midday sun to prevent leaf scorch.
WateringWater when the top 1–2 inches of mix are dry; soak thoroughly, then drain. Reduce in winter.
SoilWell‑draining, chunky aroid mix (bark, perlite, coco/peat, charcoal). Slightly acidic to neutral.
FertilizerBalanced, diluted fertilizer every 4–6 weeks in spring–summer; pause or halve in fall–winter.
HumidityPrefers 60%+; tolerates 40–50%. Boost with a humidifier or pebble tray and airflow.
TemperatureOptimal 65–85°F (18–29°C). Keep above 55°F (13°C); protect from drafts.
Growth & Life Cycle
HabitClimbing, hemiepiphytic vine that benefits from a moss pole or trellis.
Mature SizeVines 6–10+ ft indoors (longer outdoors); leaves 12–30+ in across when mature.
Growth RateFast in warm, bright, humid conditions with support.
BloomingRare indoors; greenish spathe with cream spadix, typically spring–summer on mature plants.
DormancyNo true dormancy; growth slows in cooler, darker months.
Propagation
MethodsStem cuttings with at least one node, Air layering, Division of basal shoots, Seed (rare)
DifficultyEasy
Best SeasonSpring to early summer
Maintenance & Notes
PruningTrim leggy or damaged vines in spring; pinch to encourage branching. Tie and train to a pole for larger leaves.
RepottingRepot every 1–2 years or when rootbound; move up 1–2 inches and refresh chunky mix. Add or replace support as needed.
Pests & DiseasesWatch for spider mites, thrips, mealybugs, and scale; treat early with insecticidal soap or neem and improve airflow. Prevent root rot with drainage and careful watering.
ToxicityToxic if ingested (calcium oxalate). Keep away from pets and children; sap may irritate skin.
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