How often should you repot your houseplants? What kind of soil should you use? And what else should you keep in mind? If you keep postponing repotting your houseplants for fear of making mistakes, this can ultimately do more harm than good to the plant.
Over time, the soil loses its nutrients, the roots reach their limits, and deficiencies can occur. In nature, plants spread their roots indefinitely. Houseplants, however, are dependent on their pot. If the roots continue to grow without fresh soil or more space, this will negatively impact the plant's health and growth in the long run. At the latest, when the pot becomes too small, it significantly inhibits the plant's development. A clear sign that it's time to repot is roots growing out of the bottom of the pot or becoming tightly wrapped around themselves. Other problems , such as waterlogging , root rot , or pests in the soil, also warrant repotting. Therefore, you'll find everything you need to know about repotting plants here, so that nothing goes wrong and you can care for your plant properly.
The right preparation: What do you need?
Repotting houseplants shouldn't be done spontaneously, in a rushed manner. With proper preparation, you'll work more cleanly and with less stress, protecting both your plant and its surroundings. Having all the necessary tools within easy reach will prevent rushing, unnecessary mistakes, and interruptions during the repotting process. Set aside time and create a suitable workspace. This will give you the best conditions for a successful repotting.
These are the tools you will need to repot your plants:
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Mat: Protects the floor and work surface from soil
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Potting soil: Fresh, loose, and plant-specific
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Gloves: Protection when handling cacti or poisonous plant sap
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Scissors or knife: For trimming damaged roots
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Watering can: For watering after repotting
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Small shovel: Makes filling with soil easier
Repotting plants – step by step
Once the preparation is complete, the repotting begins. A structured approach ensures that the plant survives the change well and that typical care mistakes are avoided.
1. Remove the plant from the pot
Start by carefully removing your plant from its inner pot. It's best to grasp it by the base of the stem or directly at the root ball to avoid putting unnecessary strain on the leaves and shoots. If it doesn't come out on its own, you can gently squeeze or tap the pot. Be careful not to damage the roots or the plant itself.
2. Carefully remove the soil from the roots.
Once you've removed the plant from its pot, gently loosen the roots and remove any excess soil. Shake the root ball lightly to break up any old clumps of soil, or carefully use your fingers to separate the roots. If you discover any rotten or dead roots, you can cut them off with clean scissors or a sharp knife. However, you should leave healthy roots alone.
3. Pour fresh soil into the pot.
First, place a thin layer of fresh soil on the bottom of the new inner pot. This serves as a base on which the plant stands stably and new roots can grow well. Make sure the soil layer isn't too thick, so the plant doesn't sit too high in the pot later. For plants that are sensitive to waterlogging, it can be helpful to add a drainage layer of expanded clay, gravel, or small stones before adding the soil. This ensures that excess water can drain away more easily and prevents root rot. The first layer of fresh soil then serves as a bed for the root ball.
4. Place the plant in the new pot
Now it's time to actually repot your plant. Place it in the center of the new pot, ensuring there's enough space around it for fresh soil. Fill the space around the root ball with the new soil. Make sure there's about one to two centimeters of space left at the top of the pot. Gently shake the pot to distribute the soil evenly and prevent air pockets from forming between the roots. The soil should be loose and not compacted.
If it's a climbing or trailing plant, or if it has grown considerably, you can now add or reposition a support, such as a moss pole. Tie the shoots loosely to the support so the plant can grow steadily.
5. Press the soil down lightly.
Gently press down the fresh soil with your fingers to ensure the plant sits securely in the pot. The soil should be firm enough to provide support, yet loose enough to allow the roots sufficient air and space to grow. Avoid compacting the soil too much, as this can hinder root development and promote waterlogging. Also, make sure no roots are visible above the soil surface. If any roots are exposed, plant the plant slightly deeper or add more soil until the root ball is completely covered.
6. Water the plant
Give your repotted plant a good drink of water. This will evenly moisten the fresh soil and help the roots establish themselves. Since the potting mix is ​​still very loose, the water usually drains through the pot relatively quickly. Therefore, check after about 15 to 30 minutes whether water has collected in the outer pot or saucer and empty it if necessary to prevent waterlogging. Generally, no additional fertilizer is needed immediately after repotting, as many fresh potting mixes are already enriched with nutrients.
Avoid typical mistakes when repotting
This step-by-step guide will help you repot your houseplants. However, it's still a good idea to be aware of common mistakes and consciously avoid them. This way, your plant will survive the repotting process well and thrive in the new potting mix. This creates the best conditions for vigorous growth and healthy houseplants.
Wrong pot size
One of the most common mistakes when repotting is choosing a pot that is too small or too large. If the pot is too small, the roots don't have enough room to grow. A pot that is too large, on the other hand, increases the risk of waterlogging, as the roots won't initially fill the entire pot. The new pot should therefore be sized so that there is about two to three centimeters of space between the root ball and the edge of the pot. This gives the roots enough room to grow without excess soil remaining moist for too long.
Insufficient drainage
When repotting your plants, it's essential to ensure adequate drainage. Ideally, use an inner pot with drainage holes placed inside a larger outer pot. This allows excess water to drain away and prevents waterlogging. Planting directly into a closed outer pot is not recommended, as water will quickly accumulate and the roots will be constantly wet. An exception to this is terracotta pots with drainage holes. Their porous walls allow for additional air and water permeability, promoting a healthy root environment.
Not the right soil
The type of soil you use also plays a crucial role when repotting. Potting soil has to fulfill several functions: it should retain water and nutrients, release them evenly to the plant, and at the same time be loose enough to allow the roots sufficient air circulation. Inexpensive soils are often not sterile and contain a high proportion of compost. As a result, they are more prone to mold growth or may already contain pests such as fungus gnats . High-quality soil, specifically formulated for the type of plant, on the other hand, ensures a stable root environment and prevents problems from the outset.
Wrong time
As a general rule, houseplants should be repotted approximately every one to one and a half years. Young plants grow particularly quickly and therefore need a new, larger pot more frequently. Older plants, on the other hand, often stay in the same pot longer and usually only need repotting every two to four years. The best time to repot is... Spring, This is also the beginning of the growth period for most plants. During this phase, plants can regenerate particularly well and form new roots. However, with flowering plants, you should wait until the flowering period is over, as repotting during flowering can cause additional stress to the plant.
Special requirements of popular plant species
Repotting a Monstera
Almost every plant lover has a Monstera at home. Under good conditions, it grows quickly and can become very large in a short time, which is why it regularly needs a larger pot. When repotting, a light, airy, and structurally stable potting mix is ​​particularly important, ideally containing elements like bark, perlite, or coconut fiber. Since Monsteras are climbing plants, you can also add or replace a support structure, such as a moss pole, when repotting.
Repotting a Strelitzia
Strelitzias prefer a relatively small pot and don't need to be repotted too often. Only when the pot is heavily rooted or the plant is unstable is a larger pot advisable. Extra care is needed when repotting, as the roots of a Strelitzia are very delicate and react quickly to damage. Often, several plants are found in one pot when purchased. In this case, you can carefully separate them when repotting and place them in separate or larger pots with a little more space between them. Ensure excellent drainage, as Strelitzias are sensitive to waterlogging. Use a well-draining potting mix and choose a new pot only one size larger.
Repotting anthurium
Anthuriums prefer consistently moist soil, but never soggy. When repotting, use loose, humus-rich, and well-aerated soil. A pot that is too large is not recommended, as the plant will then put its energy into root growth rather than flowering. Repotting is usually sufficient every one to two years, ideally in spring.
Alocasia umofen
Alocasias are sensitive to stress, so repotting should be done with particular care. The new pot should only be slightly larger than the previous one. Airy, nutrient-rich soil with good drainage is essential, as alocasias are prone to root rot. After repotting, a warm, bright location without direct sunlight is important to allow the plant to recover properly.
