Arrowhead Plant

Allow the top 1-2 inches of soil to dry out between waterings, typically every 1-2 weeks during the spring and summer growing season. Reduce watering frequency in fall and winter, when growth slows, to avoid overwatering and root rot; never let the plant sit in standing water. Yellowing leaves often signal overwatering, while crispy, brown leaf edges indicate under-watering.

Thrives in bright, indirect light, which supports vibrant foliage variegation without scorching tender leaves. It can tolerate low light conditions, though variegated cultivars may lose their distinctive patterning and revert to solid green in dimmer spots. Avoid direct, midday sun, which can burn leaves and cause permanent discoloration.

Prefers a light, well-draining, nutrient-rich potting mix with a slightly acidic pH between 5.5 and 6.5. A standard houseplant mix amended with perlite, orchid bark, or peat moss to improve aeration and drainage works well, as heavy, compacted soil can lead to root rot. Avoid heavy garden soils that retain excess moisture for extended periods.

Feed with a balanced, water-soluble houseplant fertilizer diluted to half strength once every 4-6 weeks during the active growing season (spring and summer). Do not fertilize in fall and winter, when the plant is dormant, as excess nutrients can build up in the soil and damage root systems. Flush the soil every 3-4 months to remove accumulated fertilizer salts.

Grows best in average indoor temperatures between 60-85°F (15-29°C), consistent with its tropical native range. Avoid exposure to temperatures below 50°F (10°C), as cold drafts and sudden temperature drops can cause leaf drop and stunted growth. Keep the plant away from air conditioning vents, heaters, and drafty windowsills during temperature extremes.

Prune back overgrown or 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 dead leaves as they appear to improve airflow and reduce the risk of pest and disease issues. Wear gloves when pruning to avoid skin irritation from the plant’s sap.

Easily propagated via stem cuttings, which can be rooted in water or moist potting mix; take 4-6 inch cuttings with at least 2-3 nodes, remove lower leaves, and place in a warm, bright spot out of direct sun until roots form in 2-4 weeks. It can also be propagated via division during repotting, separating mature root clumps into smaller sections and potting them individually. Avoid propagating during the dormant winter months, as root growth will be significantly slower.

Prefers moderate to high humidity levels between 50-70%, mimicking its native tropical rainforest environment. It can tolerate average indoor humidity around 40%, but low humidity may cause brown leaf tips and stunted growth. Boost humidity by placing the plant on a pebble tray filled with water, grouping it with other plants, or using a small room humidifier.

Repot young Arrowhead Plants every 1-2 years in spring, moving up one pot size when roots start growing out of the drainage holes or circling the root ball. Mature plants only need repotting every 2-3 years, as they prefer being slightly root-bound to encourage healthier foliage growth. Use a pot with adequate drainage holes to prevent waterlogging, and refresh a portion of the potting mix each time you repot.