Light
Arrowhead vine likes bright light but no direct sun. Diffused light is best, as harsh rays can burn or bleach the delicate leaves and vines. Variegated colorways can handle a bit more direct sun, while deeper green varieties are better adapted to partial shade.
Watering
Water your arrowhead vine regularly during the spring and summer months, and reduce your watering cadence come winter. During the spring and summer, you want to allow your vine to dry out partially between waterings but never completely. Likewise, the plant should not be kept too wet, either.
Temp & Humidity
True to its tropical nature, arrowhead vine prefers warm and humid conditions. If possible, maintain temperatures above 60 degrees Fahrenheit. While the plant can tolerate average humidity, it will thrive best with added moisture in the air. Consider keeping your plant somewhere in your home with naturally higher humidity (like a kitchen or bathroom), or utilize a method of increasing humidity, like a portable machine or placing a bed of wet river rocks beneath the pot.
Feeding
Feed your arrowhead vine once a month with liquid fertilizer throughout the spring, summer, and fall months. You can halt feeding throughout winter when the plant will naturally slow its growth.
Toxicity
Arrowhead plants are considered mildy toxic when ingested. The sap might provoke an allergic reaction and in some cases can cause swelling and pain. Although it is very rare for pets to get seriously hurt from eating plants, keep this one out of reach of children and pets.
Sad Plant Signs
Yellow leaves on an arrowhead plant are most often because the plant has been overwatered. Pale, yellow leaves can also occur when your plant is getting too much direct sunlight.You can safely remove yellow leaves, or leaves with brown, dried-out parts. These leaves will not recover or get their original green color back.
If the leaf tips or margins are dry and brown, it could be that the humidity is too low, or your plant is getting too much direct light. Don’t place your Arrowhead plant near a heating system or vent, the air will be too dry there. Increase the humidity around your plant by misting the leaves on a regular basis, using a pebble tray, or placing a humidifier nearby.
Overwatering can cause drooping leaves, but a lack of water can make them wilt as well. Think about when you last watered your arrow plant and check the soil. If it is dry, just water your plant and it will bounce right back. If it is still wet, you might have overwatered.
