Cold sensitive at any temps below 60 degrees, heart-leaf philodendron is grown outdoors only in tropical climates.
Allphilodendronspecies contain calcium oxalate crystals that is toxic to humans and pets.
Too much direct sunlight will scorch its leaves.
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Soil
Use a good basicsoilless potting mixwith plenty of peat moss.
you’re free to add someperlitefor better drainage if you wish.
you could make your potting mix by combiningpeat moss, perlite, andvermiculite.
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Water
Use tepid water, not cold water, to water this houseplant.
Cold water can harm a tropical plant by shocking its root system too suddenly.
Be careful not to overwater.
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If the leaves turn yellow, that’s usually a sign of overwatering.
Excessive humidity levels might cause problems, sometimes leading to fungus on leaves.
Do not feed during the winter.
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You may also find ‘Variegata’ forms with leaves that blend streaks of light and dark green.
However, most of the houseplants that resemble heart-leaf philodendron but have unusual leaf colors or patterns arepothos plants.
Make the pinch just above a leaf node; the plant will branch out from this point.
Other than this, the only pruning required is to remove dead or yellowed leaves.
Propagating Heart-leaf Philodendron
This plant is exceptionally easy to propagate by rooting stem cuttings.
Lightweight plastic pots are a good choice for hanging plants.
Gently loosen the potting soil around the root system andadd new potting soilto the new container.
Water the plant lightly after settling it into its new pot.
They can be permanently damaged by temperatures below 50 degrees Fahrenheit.
They’ll tend to fly away if you let the soil surface dry out between watering.
Spray the plant with a diluted vinegar wash or horticultural oil to help control them.
And while these plants don’t like direct sunlight, they do need some indirect light to thrive.
These are not plants to grow in dark rooms.
Take care to keep in partial sun only and indirect light.
It could also be the result of under-watering.
Keep the soil consistently moist but not oversaturated or muddy.
Safe and Poisonous Garden Plants.University of California.
Are philodendrons poisonous?.
Iowa State University Extension and Outreach.
Pet Poison Helpline, Animal Poison Control Center.
Philodendrons.University of Florida IFAS.
North Carolina State Extension.