Why your dragon plant might be suffering from a common tap water habit
In short: These popular, long-lived houseplants are surprisingly sensitive to the contents of your kitchen faucet. While they are famously easy-going, their foliage often suffers from hidden chemical sensitivities. Understanding the specific needs of these tropical imports is the secret to keeping their woody stems healthy and their leaves vibrant for years.
Dracaenas, or dragon plants, are a diverse genus of tropical shrubs and trees originating from Africa, southern Asia, and Australia. While they are often sold as low-maintenance houseplants, they have specific environmental preferences. They thrive in consistently warm temperatures between 18 and 30°C and require bright, indirect light. Direct summer sun can easily scorch their leaves, while cold draughts or proximity to heat sources like radiators can cause significant stress.
A common mistake owners make involves watering. Dracaenas are sensitive to fluoride found in tap water, which can cause their leaf tips to turn brown. Because these plants prefer slightly acidic soil, hard tap water—which is typically alkaline—can neutralize the necessary acidity in their compost. Using filtered water or rainwater at room temperature is recommended to maintain their health. Furthermore, they should only be watered once the top 5cm of compost feels dry, as overwatering leads to root rot.
As these plants mature, they develop a tall, woody stem, sometimes reaching heights of 2m or more. If they become too large, they can be pruned to encourage new shoots, allowing owners to maintain a manageable size or shape. It is important to note that all parts of the dracaena are toxic to cats and dogs, so they should be positioned out of reach. Recently, DNA research has expanded the genus to include plants formerly classified as Sansevieria, such as the snake plant, though the classic woody dracaenas remain the most common choice for indoor gardeners.
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Sources
- Summary by Intellect · source: How to grow dracaena / RHS Growing Guide
- Also: Dracaena (plant)
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