Arrowhead Plant

Allow the top 1 to 2 inches of soil to dry out between waterings, reducing frequency in the cooler winter months when growth slows. Overwatering can lead to root rot, so ensure the pot has adequate drainage holes to prevent standing water. Avoid using heavily chlorinated water, as this can cause brown leaf tips in sensitive specimens.

Thrives in bright, indirect light; direct sunlight will scorch its delicate leaves, causing brown spots and faded variegation. It tolerates low light conditions well, though variegated varieties may lose their colorful patterns if kept in too dim a location. East-facing windows are ideal, as they provide gentle morning sun without harsh afternoon heat.

Prefers a light, well-draining, nutrient-rich potting mix with a slightly acidic pH between 5.5 and 6.5. A blend of standard potting soil, perlite, and orchid bark or peat moss works well to improve drainage and aeration for its delicate root system. Avoid heavy, compacted soils that retain excess moisture for long periods.

Feed once a month during the spring and summer growing season with a balanced, water-soluble houseplant fertilizer diluted to half the recommended strength. Do not fertilize in fall and winter, when the plant is dormant and new growth is minimal. Over-fertilization can cause salt buildup in the soil, leading to brown leaf tips and root burn.

Grows best in average indoor temperatures between 60 and 85°F (15 and 29°C). It cannot tolerate temperatures below 50°F (10°C), so keep it away from cold drafts, air conditioning vents, and exterior windows during the winter months. Sudden temperature fluctuations can cause leaf drop and stunted growth.

Prune back long, leggy stems in early spring to encourage bushier, more compact growth, cutting just above a leaf node to stimulate new branching. Remove any yellowed, damaged, or diseased leaves as they appear to keep the plant healthy and improve air circulation around its foliage. Wear gloves when pruning, as the sap can cause mild skin irritation in sensitive individuals.

Easily propagated via stem cuttings taken in spring or summer; cut a 4 to 6 inch section of stem with at least 2 to 3 leaves, and root it in water or moist potting mix kept in bright, indirect light. Cuttings typically develop roots within 2 to 4 weeks, at which point they can be transplanted into regular potting soil. It can also be propagated via division during repotting, separating clumps of roots to create new individual plants.

Thrives in moderate to high humidity levels between 50 and 70%, matching its native rainforest environment. Dry indoor air can cause brown leaf tips, so increase humidity by placing the pot on a tray of pebbles filled with water, using a room humidifier, or grouping it with other tropical plants. It tolerates average household humidity levels around 40% well, making it suitable for most indoor spaces.

Repot young plants every 1 to 2 years in spring, moving them to a pot one size larger than their current container when roots begin to grow out of the drainage holes. Mature plants only need repotting every 2 to 3 years, or when the soil becomes compacted and drains poorly. Be gentle when handling the root system during repotting, as arrowhead plant roots are relatively delicate and prone to damage.