As the days grow shorter and a crisp chill enters the air, our beloved indoor plants begin to sense the shift in seasons. Autumn is a time of transition, not just for the world outside our windows, but for the green companions thriving within our homes. Gone are the long, sun-drenched days of summer, and in their place, we face cooler temperatures, less natural light, and drier indoor air. This change in environment can be a shock to our plants if we're not prepared, potentially leading to stress, wilting, yellowing leaves, and even pest infestations. But fear not, fellow plant enthusiasts! With a few thoughtful adjustments to our care routines, we can help our leafy friends navigate this autumnal transition with grace and continue to flourish throughout the cooler months. Think of it as a gentle handover from summer's energetic growth spurt to a period of rest and recuperation, setting them up for success when spring eventually returns.
How Do I Adjust for Reduced Light in Autumn?
The most significant change our indoor plants will experience is the reduction in natural light. As the sun's angle lowers and daylight hours shrink, the intensity and duration of light reaching your plants diminishes considerably. This directly impacts their ability to photosynthesise, the process by which they create energy. For many plants, especially those that thrive in bright, indirect light, this can mean they are no longer receiving enough energy to maintain their current growth or even their existing foliage. You might notice slower growth, or even a complete cessation of new leaf development. Some plants might start to stretch towards the nearest light source, becoming leggy and weak, while others might begin to drop leaves as they conserve energy.
To combat this, the first and most crucial step is to reassess your plants' locations. Gently move any plants that were previously in lower-light areas to brighter spots. This doesn't necessarily mean placing them directly in a south-facing window, which can still be too intense for some, but rather positioning them closer to east or west-facing windows, or even in the brightest part of a south-facing room, perhaps a metre or two back from the glass. Observe your plants closely; if they are stretching, they need more light. If their leaves are scorching or turning brown and crispy at the edges, they might be getting too much direct sun, even in autumn. Dusting your plant leaves regularly also plays a vital role. Over time, a layer of dust can accumulate on the foliage, acting like a tiny curtain, blocking precious light from reaching the photosynthetic cells. A soft, damp cloth or a gentle spray of water can help keep those leaves sparkling and efficient.
How Often Should I Water Ivy?ing Wisely in Autumn
The next thing to consider is watering. This is perhaps where most plant parents make the biggest mistake during autumn and winter. As light levels decrease and temperatures generally cool down, plants naturally slow their metabolic processes. They require significantly less water because they are not growing as actively and are not losing as much moisture through transpiration. Overwatering is the number one killer of indoor plants during these months, leading to root rot, a fungal disease that can be fatal. The roots, deprived of oxygen in waterlogged soil, begin to decay, and the plant can no longer absorb water or nutrients.
💡 Tip Quick Tip: Check the soil moisture before watering your calathea. Push your finger about 2cm into the soil — if it feels dry, it is time to water. If it still feels moist, wait another day or two.
So, how do you adjust your watering schedule? The golden rule is to always check the soil moisture before watering. Stick your finger about two inches into the soil. If it feels moist, hold off. If it feels dry, then it's time to water. For most common houseplants, this might mean watering only once every one to three weeks, depending on the plant type, the size of the pot, and the humidity levels in your home. It's far better to err on the side of underwatering than overwatering. When you do water, water thoroughly until water drains from the bottom of the pot, then discard any excess water from the saucer. Never let your plants sit in standing water. Consider using a moisture meter if you find it difficult to judge soil dryness; these inexpensive tools can be a lifesaver for beginners.
How Do I Manage Temperature Changes in Autumn?
Temperature is another factor that requires attention. While many houseplants originate from tropical or subtropical regions, they still appreciate a stable environment. Autumn often brings fluctuations in indoor temperatures as we start to use our heating systems more. Avoid placing your plants near direct heat sources like radiators, fireplaces, or heating vents. These can dry out the soil and foliage rapidly, causing stress and damage. Equally, avoid placing them near cold drafts from poorly sealed windows or doors. Sudden temperature drops can shock a plant. Aim for a consistent temperature range, ideally between 18-24 degrees Celsius during the day and slightly cooler at night. Most common houseplants are comfortable in typical home temperatures.
How Can I Boost Humidity for Indoor Plants in Autumn?
Humidity levels are also likely to drop significantly as heating systems kick in. Most indoor plants, especially those with thin, delicate leaves, thrive in higher humidity environments. Dry indoor air can lead to crispy leaf edges, brown tips, and an increased susceptibility to pests like spider mites, which love dry conditions. To combat this, you can increase humidity around your plants in several ways:
- Misting your plants can provide a temporary boost, but it's often not enough and can sometimes encourage fungal diseases if done excessively or in poorly ventilated areas.
- Group your plants together — as they transpire, they release moisture into the air, creating a microclimate of higher humidity around them.
- Place your pots on pebble trays — fill a shallow tray with pebbles and water, ensuring the water level stays below the bottom of the pot. As the water evaporates, it will increase the humidity around the plant.
- Use a room humidifier for a more significant boost, especially for humidity-loving plants like ferns or calatheas.
Should I Adjust My Feeding Schedule in Autumn?
Feeding your plants is also something to rethink in autumn. During the active growing season of spring and summer, plants are hungry and need regular feeding to support their growth. However, as light levels decrease and growth slows down in autumn, their nutrient requirements also diminish. Continuing to feed them at summer rates can lead to an excess of nutrients in the soil, which can burn the roots and cause more harm than good. It's generally recommended to reduce or stop fertilising altogether from late autumn through winter. If you do choose to fe
…