Anthurium Not Growing

Home / Guides

How fast anthurium normally grows

Anthurium (including Anthurium andraeanum, Anthurium clarinervium, Anthurium crystallinum, and many other varieties) is a slow to moderate grower. In good conditions during spring and summer, most varieties produce one new leaf every 3 to 5 weeks. New leaves emerge from the plant's center as a small pointed bud and unfurl over 2 to 4 weeks. Growth slows in autumn and often pauses in winter, particularly in rooms with reduced natural light. Collector varieties with large, velvety leaves (such as Anthurium clarinervium and Anthurium crystallinum) tend to grow slower than the common Anthurium andraeanum. A plant that produces no new leaves at all during spring and summer has a care condition worth investigating; a plant that slows or pauses in winter is behaving normally.

Cause 1: Low light

Signs: No new leaves during the growing season. The plant is in a dim location, more than a few feet from a window, or in a room with north-facing or very small windows. Existing leaves are dark green and flat. The plant may have produced spathes (the colorful modified leaves) at purchase but has produced none since being moved indoors.

Why it happens: Anthurium needs bright indirect light to grow leaves and produce spathes actively. In dim conditions it enters a holding pattern, maintaining its existing leaves while producing nothing new. Unlike some houseplants that can grow in genuinely low light, anthurium needs a position reasonably close to a good light source to push out new growth.

Fix: Move to bright indirect light within 2 to 3 feet of a medium to large window. Avoid direct sun, which scorches the leaves. New growth should appear within 3 to 4 weeks during the growing season after improving the light. If natural light cannot be improved, a grow light on a timer (12 to 14 hours per day) works well for anthurium.

Cause 2: Overwatering and root rot

Signs: Growth has stopped and some leaves are yellowing or going limp. The soil has been consistently moist or wet. The pot smells musty. When removed from the pot, some roots are dark brown or black rather than white or pale. The plant looks unwell despite being watered regularly.

Why it happens: Anthurium roots need air as well as moisture. In consistently wet, dense soil, the roots suffocate and rot, eliminating the plant's ability to take up nutrients and halting all new growth. Anthurium is typically sold in a loose, chunky potting mix that provides good aeration — repotting into a denser mix or letting the soil become compacted and waterlogged over time sets up root rot conditions.

Fix: Remove from the pot and inspect the roots. Trim any black or mushy roots to firm tissue. Repot in a fresh, well-aerated mix such as a combination of orchid bark, perlite, and potting soil. Allow the top 1 to 2 inches to dry between waterings. Anthurium likes moisture but needs the soil to be airy rather than dense and wet. Recovery typically takes 4 to 6 weeks.

Cause 3: Seasonal dormancy

Signs: Growth slowed or stopped in autumn or winter. The plant looks healthy. The care routine has not changed. It was growing actively earlier in the year.

Why it happens: Anthurium is a tropical plant that responds to reduced winter light and shorter days by slowing its growth. This is a normal seasonal response, not a care failure. Even in consistent indoor conditions, the plant senses the change in light quality and reduces its metabolic activity.

Fix: No action needed for a healthy plant in winter. Reduce fertilizing or stop entirely until spring. Reduce watering frequency slightly since the plant's water needs decrease when it is not actively growing. Resume monthly fertilizing when new growth resumes in spring.

Cause 4: Low humidity

Signs: Growth is slow and new leaves emerge with brown tips or edges that develop quickly after unfurling. The indoor air is dry, particularly in winter with heating running. The plant is otherwise in a good light position and watered correctly. Existing older leaves look fine but new growth is consistently damaged.

Why it happens: Anthurium evolved in humid tropical forests and grows best in humidity above 50%. In dry indoor air, the delicate tissue of new leaves desiccates as they unfurl, causing tip browning and slowing the development of new growth. While low humidity alone will not stop growth entirely in a well-lit and well-watered anthurium, it does slow it and damages each new leaf as it emerges.

Fix: Increase humidity above 50% using a humidifier, pebble tray, or by placing the plant in a naturally humid room such as a bathroom with adequate light. Keep the plant away from heating vents and radiators which dry the air directly. Higher humidity produces larger, undamaged new leaves and a more consistent growth rate.

Cause 5: Root binding or depleted soil

Signs: The plant has been in the same pot for 1 to 2 or more years. Growth has slowed significantly over the past growing season. Roots are emerging from drainage holes or circling visibly at the soil surface. The soil looks compacted and old.

Why it happens: Anthurium grows best in fresh, airy potting mix. Over time, the organic components of the mix break down, becoming dense and less well-draining, and the nutrients deplete. A root-bound plant also has limited capacity for new root growth, reducing nutrient and water uptake. Anthurium benefits from repotting every 1 to 2 years into fresh mix.

Fix: Repot in spring into a container 1 to 2 inches wider, using a fresh chunky mix of orchid bark, perlite, and potting soil. This type of airy mix mimics the epiphytic growing conditions anthurium prefers in the wild. After repotting, maintain consistent moisture but ensure good drainage. New growth should resume within 3 to 4 weeks during the growing season.

Cause 6: Cold temperatures

Signs: Growth stopped during cool weather. The plant is near a cold window or in a cool room. Temperatures regularly drop below 60 degrees Fahrenheit. Leaves may have brown or black patches from cold damage.

Why it happens: Anthurium is a tropical plant that grows actively between 65 and 85 degrees Fahrenheit. Below 60 degrees, growth slows substantially; below 50 degrees, the plant suffers cold damage. Air conditioning drafts in summer are a common overlooked cause of growth stalls in otherwise well-positioned plants.

Fix: Move to a consistently warm location above 65 degrees Fahrenheit. Keep away from cold drafts, cold windows in winter, and air conditioning vents in summer. Growth should resume within 2 to 4 weeks of consistently warm conditions during the growing season.