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Repotting a plant: why?
The potting is a garden center operation that is simply essential for your plants to do well and develop properly. This for two simple reasons:
1. The more a plant grows, the more space its roots need; by repotting in a larger pot, they will therefore have all the space they need.
2. The potting a plant also makes it possible to renew the earth in which it developed, and therefore to bring it a new stock of organic matter. Indeed, as watering progresses, the soil present in the pot ends up inexorably becoming poorer. However to develop well, a plant needs a suitable nutritive contribution!
How do you know if a plant needs to be repotted?
There are two very simple tests you can do to find out if a plant needs to be repotted :
1. Stop watering your plant for a few days, then remove it from its pot: if the roots almost all come out of the clod of earth, it's time to repot!
2. If your pot and the plant it contains tend to overturn as soon as you touch it, it is a sign that the roots are running out of space.
When to repot?
The beginning of spring is the best time for potting plants, because the roots have not yet resumed their activity and are "at rest".
However, if you have hardy potted plants that stay outdoors during the winter, you can repot them in the fall.
To note : also repot the plants you just bought. Indeed, there is a good chance that they have reached the maximum development allowed by the pot in which they were sold.
How to successfully repot?
If you want to repot your plants in the rules of the art, here are the 5 steps to always respect:
1. Start by carefully choosing the soil you are going to use. The latter must be rich in organic matter, but above all suitable for the plant you want to repot (special potting soil, special citrus potting soil, etc.).
2. Always repot your plant in a pot with a larger diameter (about 2 cm wider) than the pot in which it is located. Cover the bottom of the new pot with gravel or clay balls so that it is sufficiently drained and that the water does not dry, then put a layer of potting soil suitable for the plant.
3. Remove the plant from its old pot. To do this, go gently: use a claw to gradually remove the soil. Do not hesitate to remove dead or overly fragile roots.
4. Put the plant in its new pot, in the center of the latter, then add new soil little by little, tamping it by hand so that there is no air.
5. Repotting the plant, finish by watering generously.
Surfacing, or repotting large plants
Some plants are too large to be able to be repotted in a conventional manner. They must therefore be surfaced regularly. To do this :
- Remove as much soil from the pot in which the plant is located (go to the first roots).
- Complete with new potting soil, and of course adapted to your plant.
- Finish the surfacing by abundant watering of the plant.