Orchids need a regular maintenance routine. Tidying up your orchids gives them a healthy environment, which prevents attack from pests and diseases. This ensures the orchid remains robust and is ready to put out beautiful blooms during the season.
In this project, I demonstrate how to clean up the root system of a lithophytic orchid (mounted on a rock).
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Every year, your orchid grows new roots. As the number of new roots increase, peering through the transparent pot, you will notice several roots that are brown and mushy. This decay is a natural ageing process to shed off old roots.
The root system is now dominated by the roots from the newer growths. In order to create a healthy environment for these new roots, it is a good idea to clean up the root system and remove the old, dead roots.
While the general school of thought is to not disturb the orchid, I am a compulsive picker of old dried sheaths and roots that are visible, so that the orchids looks neat. This does not mean that I frequently unpot my orchids and go on a cleaning spree, every time I spot a dead and mushy root or two.
Instead, I assess whether the orchid medium remains wet due to lot of mushy dead roots. I also ensure the orchid is done with blooming, and check for the development of new growths and roots. This will indeed provide an opportune moment for repotting as the orchid will not suffer from dehydration due to lack of good roots. The new roots will quickly take over and minimise the shock of disturbing its root system.
Another reason why I like to tidy up the root system of my orchids is that dead mushy roots hold copious amounts of water. Prolonged dampness in the congested and closed environment within the confines of a pot encourages fungal and bacterial rot issues, which are commonly seen in orchids that grow in an excessively damp environment.
The damp environment also acidifies the medium, leading to its early breakdown. Disintegrating medium further aggravates the dampness, leading to rot. Therefore, tidying up their root system will provide a healthy environment and prevent the root system from decaying, thereby encouraging the healthy growth of the plant, which in turn will lead to a healthy bloom cycle.
Aesthetically too, your orchid will look neat and well-groomed if the scruffy dried roots are taken off.
Now that you have understood the importance of cleaning up your orchid’s root system, you need to also recognise that the root system is the most important part of the plant, and is prone to set back. Therefore, you need to follow the below listed precautionary measures while cleaning up the root system:
- Always choose a good time for cleaning up your orchid’s root system. Preferably, time yourself when the new growths start showing up, and before the new shoot develops roots. This is of special significance as there is a high risk of damaging the new roots by bruising or breaking off the tip of the new roots. This in turn can affect its further development, as well as its capacity for nutrient and water absorption.
- Set aside some dedicated time to execute this project as you cannot complete it in a jiffy.
- Ensure that you have all the requirements like 3% bleach, rubbing alcohol, 3% hydrogen peroxide, foreceps, tweezers, fresh medium, if required, and a bigger pot ready for repotting the orchid.
- Sterilize equipment such as cutters, tweezers and forceps by rubbing with alcohol and flaming them. Take extreme precaution while doing so, so that there are no mishaps. Children need to carry out this step under adult supervision.
- Handle the plant carefully so that you do not damage any of the delicate parts of the plant such as roots, leaves and new growths.
Tidying up the root system of my orchid
I mounted this Cattleya Walkeriana in June 2020. The orchid liked its new environment during the rainy season and produced new roots. A few months later, once the rains stopped, I found the orchid suffering from lack of humidity. Frequent wet and dry cycle took its toll on the roots and they began dying.
Things got worse when I had to suddenly leave town for four weeks and my orchids remained untended. When I returned, I found a severely dehydrated orchid with its roots shrivelled up and dried. Watering it regularly only made these roots mushy and unhealthy.
Fortunately, the orchid recovered from the setback and put forth a new growth and roots. I did not want the orchid to develop rot issues and so decided to cut off the mushy roots, without disturbing the new roots. Hopefully, the plant will thrive in its new healthy environment.
To execute this project, I carried out the following steps for the best results:
- Cleaned the work area by rubbing with a swab dipped in 10% bleach solution.
- Prepared the plant by watering it before hand to ensure the plant doesn’t get dehydrated since I do not water the plant for 24 hours after cutting the roots or stem. This is done to effectively seal the open wounds caused by cutting the roots or stem.
- Untied the wires and raffia tape that were used to secure the plant on the rock.
- Removed the moss surrounding the roots and looked for the mushy roots. I began separating them with a pair of electrical tweezers. The tweezers are especially useful to reach into nooks and crevices and remove dried sheaths, tease out roots and separate them from the plant before cutting them off. This easy accessibility also prevents us from accidentally cutting off good roots or sheaths.
- Once the roots were cut off, I spritzed the root system with 3% hydrogen peroxide to reduce the risk of bacterial and fungal rot, and allowed them to sit for 10 minutes.
- I then covered the new roots loosely with a little moss, ensuring the moss is not too close to the base of the pseudobulbs. This will ensure the dampness from the moss does not encourage rot around the stem.
- I secured the moss and plant firmly in place with wire or raffia tape. Doing this will make the plant feels safe and will encourage further root production.
- Lastly, I placed it back in its tray and have been watering it every day by spraying a little water on the rock. The LECA bead humidity tray does the rest, by providing a humid environment throughout the day.
I stepped back to assess the plant and was pleased to see it all tidied up. I am confident the plant is much happier and will thrive in this low risk, environment. I will keep you posted about its progress.
There is a lot you can do to make your plants comfortable and provide a healthy environment for their growth. This dramatically reduces stem rot and root rot issues as well as the risk of developing diseases such as Fusarium Wilt.
To know more about orchid diseases and pest infections and their treatment, read my post, How to save your orchids from pests and diseases.
Orchids are resilient, and you will find them responding very well to seemingly small, yet important initiatives on your part, such as cleaning up of leaves, removing dried sheaths and cutting away dead roots, dividing the plants if they have outgrown their pots, and also cutting away old canes or pseudobulbs that are done with blooming.
All of these will give them a new lease of life and encourage them to focus their energy in putting on their best show during their bloom cycle. To know more about care tips for your orchids, read my post, 5 Basic care tips for your orchids.
So make such projects a part of your orchid care regimen to provide them with healthy conditions for their growth.
Until my next, happy growing!