From my perspective, the most common reason for my growth stagnation is insufficient light. You may think the corner of your room is bright, but my leaves are sophisticated solar panels. They need energy to photosynthesize and create food for new growth. If the light is too low, I simply enter a state of survival, maintaining my existing leaves but lacking the energy to produce new ones. I need bright, indirect light. Direct, harsh sunlight can scorch my leaves, but a spot near an east-facing window or a few feet back from a south or west window is ideal. If my newer leaves are smaller and the stems are becoming leggy as they stretch towards the light source, I am literally showing you that I need more sun.
My roots are my mouth and my anchor. If they are unhappy, my entire being is unhappy. The soil you have me in is crucial. It must be well-draining yet retain enough moisture to keep me hydrated. Heavy, compacted soil that stays wet for too long will suffocate my roots, leading to root rot. In this state, I cannot absorb water or nutrients, and my growth will halt entirely as I fight to survive. Conversely, if the soil is too old and depleted, it will have no nutrients left for me to consume. Furthermore, if I have been in the same pot for years, my roots may be pot-bound—a tangled, congested mass that has no room to expand and explore for new resources. A cramped root system directly translates to a stunted plant.
Water is life, but it must be given in balance. The phrase "consistent moisture" does not mean constant sogginess. It means watering me thoroughly when the top few inches of soil feel dry, then allowing the excess to drain away completely. Chronic overwatering drowns my roots, while persistent underwatering puts me under drought stress. Both extremes force me to divert energy away from growth to simply endure the conditions. Similarly, I need food. A lack of nutrients, particularly nitrogen which is essential for foliage development, will cause my growth to cease. During my active growing season (spring and summer), I require regular feeding with a balanced, diluted fertilizer to fuel the creation of new stems and leaves.
I am a tropical being, and I thrive in stable, warm, and humid conditions. Sudden changes in my environment are significant stressors that can cause me to pause growth. Drafts from air conditioners, heating vents, or frequently opened doors create temperature fluctuations I dislike. Low humidity, especially during winter, can cause my leaf edges to brown and make me generally uncomfortable. Furthermore, pests like spider mites or scale insects are more than a nuisance; they are parasites that suck the sap directly from my tissues, stealing the very nutrients intended for my new growth. An infestation will absolutely halt my development as I struggle to defend myself.