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Repotting Indoor Plants

10 Sep, 2021

Spring is an exciting time for indoor plants – a time of new growth. It’s also the best time to repot your indoor plants. Whether you have a brand-new plant that you want to plant into a new pot, need to replenish your existing plant with new soil, or your favourite plant has outgrown its old pot, repotting your indoor plant is something that will need doing once every few years. Here’s everything you need to know to make the move easy.

Does it Need Repotting?

The best way to tell if your plant needs to be repotted is to check if the plant roots are growing through the drainage holes at the bottom of your planter. Other signs may be that the roots are pushing the plant up out of the planter, your plant is growing slower than normal or it dries out more quickly than usual after watering. Newly bought plants don’t usually need to be repotted unless they are going to a pot around the same size. Some indoor plants will have tags on them recommending you wait to repot them as they have delicate root structures. Others enjoy being tight in pots (like moth orchids, anthuriums and peace lilies) with their roots touching the sides. If the pot is too big, the plants could struggle to produce blooms until they get bigger.


Rootbound is when the plant's roots have grown to fill the pot; there is more root in the pot than soil.

Step By Step

1. Prepare your new pot

Ensure your new pot is larger, or the same size, as the current pot your plant is in. When upsizing your pot, increase by up to 5cm in size- but not any larger. If there's too much new soil then the plant's roots may struggle to take up all the water. Add a layer of potting mix to the bottom of your new pot for your plant's roots to grow in. Use a free-draining mix such as Kings House Plant Mix.

2. Remove plant from pot

If you are repotting a plant that has become rootbound, or is in a large, heavy pot, you can loosen the roots with a flush of water to wash away the outer soil. You will need to untangle and trim back any very long roots that were rootbound. If you are repotting a new plant, gently squeeze the plastic pot so the soil loosens, turn the pot upside down with one hand secured around the top of the soil, and gently pull the pot away from the soil and plant.

3. Add your plant and soil

Gauge how deep to place your plant by how it will sit in the pot. You want to have about 3–4cm of space between the top lip of the pot and the soil, otherwise water will run off the soil before it can soak in. Fill in the new mix around your plant, only up to where it was sitting before – above the roots but below where leaves are growing out of the stem(s). Always deeply water after planting. Wait at least a month until feeding with a liquid food.

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