Over time, your houseplants will use up the nutrients available to them in the soil in their pots. With consistent watering too, nutrients will be washed out – so it’s important to keep the soil topped up with the feed that’s right for your type of houseplant.
In episode five of Houseplant 101, Alex explains how to feed your plants, as well as the different types of houseplant feed and what plants they’re suitable for.