Orchids are wonderful plants that in most cases are very hardy and will thrive when their basic needs are met. Over time, one of the often overlooked needs is that orchids periodically need to be repotted.
It is necessary to repot orchids when one of two conditions is present. The first is when the plant actually starts overgrowing the pot. The roots spilling over the sides and the leaves resting on the edge of the pot are two good examples of an orchid in need of a larger container. The other time to repot is when the potting medium or compost in the pot has become compacted. This impedes drainage and reduces aeration around the roots, both of which can cause root rot and other problems. Generally speaking, if the orchid has not been repotted in the last two years, it is most likely time to do it.
When the decision to repot is made, there are a number of important things to keep in mind to ensure that the procedure is successful and the orchid continues to thrive.
It is important to remember that repotting is a significant temporary shock to the plant, so it should not be done while the orchid is flowering or in a growth phase of the season. For most species it is best to repot after flowering has ended, in the later winter or very early spring before the spring growth period starts.
Before repotting, the orchid plant should be in good health, unless of course it is unhealthy because it needs to be repotted. Make sure that there are no insect pests, yellowed leaves from overwatering, fungal infections on the plant, etc. If the orchid is suffering from any health issues before the repotting, the stress of it could kill the plant.
When choosing a new pot for the orchid, try to avoid plastic pots unless they have a lot of holes for drainage. Clay (terracotta) pots are best as they are porous which allows for some evaporation below the surface, which helps prevent root rot. The other advantage of the clay pots is that they are heavy and the orchid is much less likely to get knocked over than if it were in plastic. When an orchid falls over and is jarred in the pot, some of the roots can break.
Regardless of what type of pot is used, before adding the potting mixture it is a good practice to put some rocks or polystyrene (packing peanuts) in the bottom of the pot which will be a tremendous help with the drainage in the pot.
When it comes time to put the plant back in the pot, dampen the potting mixture somewhat before putting it into the pot. This will help the plant to get some water easily, but won’t give it too much. This leads to the next tip, and that is that after repotting, do not water the orchid for between two and three weeks. Even if the utmost care is taken when repotting, some roots will have broken and/or there will be some wounds from roots that were trimmed off. If the soil is too wet in this crucial healing time, there will be an increased risk of fungal or bacterial infection. Keep the humidity level high and slowly start watering toward the end of the three weeks, and the orchid will be just fine.
The last key tip is to stake the plant after repotting. Some people skip this because they don’t like the way that it looks, but it is crucial to a successful transplanting. The plant needs to be kept stable in the pot all the time, but especially at this time while the new root growth is taking hold.
Orchid repotting is a necessary part of maintaining the long-term health of the plants and when done properly, the plants will continue to thrive for years and years.
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About the Author:
Andrew Bartlett has been gardening and caring for plants for over 30 years. Go to www.orchidsinfo.com for more information on repotting orchids as well as many other aspects of orchid care.
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