Can You Keep Coleus Indoors All Winter?
As the winter chill sets in, many gardeners wonder if their beloved coleus plants can survive the cold months indoors. The good news is, with the right care, coleus (Plectranthus scutellarioides) can indeed thrive as indoor plants during winter.
Coleus, known for their vibrant foliage, are native to tropical regions and prefer warm temperatures. However, they are quite adaptable and can tolerate indoor conditions during winter, provided they receive the right amount of care.
Understanding Coleus' Winter Needs
To keep your coleus healthy over winter, it's crucial to understand their specific needs during this period.
Coleus plants are dormant during winter, which means they grow slower and require less water and light. However, they still need enough light to survive, and they can't tolerate temperatures below 50°F (10°C).
Light Requirements
During winter, the days are shorter, and the light is less intense. Coleus plants need at least 6 hours of bright, indirect light daily. Place your coleus near an east- or west-facing window for optimal light conditions.
If natural light is insufficient, consider supplementing with artificial grow lights. Place the lights about 6-12 inches away from the plant and leave them on for about 14-16 hours a day.
Temperature and Humidity
Coleus plants prefer temperatures between 70-85°F (21-29°C) during the day and a 10°F (6°C) drop at night. Maintain these temperatures to keep your coleus healthy over winter.
Coleus also thrive in high humidity environments. If your home's air is dry, consider misting your plant regularly or placing it on a tray filled with pebbles and water.
Caring for Coleus During Winter
With the right conditions, your coleus can remain healthy and even produce some new growth during winter.
However, it's essential to adjust your care routine to match the plant's slower growth rate.
Watering
During winter, coleus plants need less water. Allow the top inch of soil to dry out between waterings to prevent root rot.
When watering, use room temperature water and ensure it drains well. Standing water can cause root rot, which can be fatal for coleus plants.
Fertilizing
Coleus plants don't need as much fertilizer during winter. In fact, fertilizing during this period can encourage new growth, which can be stressful for the plant.
If you must fertilize, use a diluted, balanced houseplant fertilizer once every 6-8 weeks. Alternatively, you can skip fertilizing altogether until spring.
As winter comes to an end, you can gradually increase the light and water your coleus receives, preparing it for the growing season ahead. With proper care, your coleus will continue to brighten up your indoor space even during the coldest months.
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