Your Arrowhead Plant prefers bright indirect light but can adapt to low light. Direct sun may burn the leaves. Water when the top 50%-75% of the soil is dry. Water until liquid flows through the drainage hole at the bottom of the pot and discard any water that has accumulated in the saucer.
The best fertilizer for these types of plants is a liquid fertilizer. Liquid fertilizer is great for plants that use a lot of nutrients to grow and need to absorb it quickly.
Although these plants are extremely low light tolerant, they will grow faster and maintain their vibrant coloring and markings if grown in medium to bright indirect light. Direct sun will scorch their leaves.
Temperature: Temperatures of at least 60-85 ºF (15-29 ºC) need to be maintained year round. This species may cope with 50 ºF (10 ºC).
Syngonium can be repotted every two years or so. Be careful while handling this plant as it's toxic and can cause skin irritation.