When you’re growing plants in containers, whether indoors or outside, knowing how much water a plant needs can be a challenge but self-watering planters and pots take a lot of that pressure away. The amount of water a plant requires can depend on the species, the time of year and growing conditions. In hot, dry summers they may need watering every couple of days, but in winter they may need it only every few weeks.
Designed to allow plants to draw up water when they need it, self-watering planters are a convenient option to prevent overwatering, look after plants when you go away or simply provide a little peace of mind. Most importantly though, they provide plants with a consistent supply of water, reducing plant stress and helping to produce healthy, vigorous growth.
Self-watering pots and planters work using a clever process called capillary action or wicking, whereby the plant pulls water up through the soil to the leaves, until it’s absorbed and it pulls up more. Within all self-watering planters is an in-built reservoir that stores water away from the plants root zone. This is connected to the compost by a wick or capillary system and the plant then simply draws the water up into its roots as and when it needs it.
Self-watering planters are best watered directly into the reservoir rather via the surface of the soil to prevent compost washing into the reservoir where it will contaminate the water and cause it to become anaerobic and smell.
It is possible to set up your own self-watering system but investing in a more sophisticated, ready-made self-watering planter may be more helpful if you intend to use it often. Those from a retailer or garden centre often have extra features that can be useful, including a water
Read more on gardenersworld.com