Hey Szabi, dividing Oncidiums is a great way to refresh the plant and encourage new growth. The best time to divide is usually right after the bloom period, when the plant is entering a growth phase. Start by gently removing the orchid from its pot and loosening the roots to avoid breaking them. Use a sterilized sharp knife or scissors to cut between the pseudobulbs, making sure each division has at least three healthy pseudobulbs and a good root system. Avoid damaging the roots as much as possible, and after dividing, you can dust the cut areas with a fungicide or cinnamon powder to prevent infection. Repot the new divisions in fresh orchid mix and water sparingly at first to let the roots establish without rotting. Hope that helps!

Thanks, that’s really helpful! So after I divide and repot, should I keep the new plants in lower light or humidity for a bit to help them recover? Also, any recommendations on the best type of orchid mix for Oncidiums? I want to make sure I’m giving them the right environment to bounce back strong.

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Yes, giving the new divisions a bit of a break from intense light is a good idea, so keep them in bright, indirect light rather than direct sun for a couple of weeks while they recover. Maintaining higher humidity during this time can also help reduce stress and encourage root growth, but avoid overwatering. As for the orchid mix, Oncidiums generally prefer a well-draining medium like a mix of bark chips, perlite, and charcoal. Some growers also add sphagnum moss for moisture retention, but too much can cause root rot if watering isn’t managed carefully. Overall, aim for something airy that allows good airflow around the roots. Let me know how it goes!

Exactly, giving them that gentle environment after dividing can make a big difference. Also, if you can, mist the new divisions occasionally to keep humidity up without soaking the medium. If you have a humidity tray or a small humidifier nearby, that can help too. One more thing-keep an eye out for any signs of stress like yellowing leaves or soft roots, and adjust watering or light accordingly. Oncidiums are pretty resilient once they’re settled, so with a bit of patience, your divided plants should bounce back nicely!

Adding to that, it’s also a good idea to avoid fertilizing your divided orchids for about a month or so. They’ll be focusing energy on root recovery rather than growth, so holding off on feeding helps prevent additional stress. Once you see new growth emerging, you can gradually start with a balanced, diluted fertilizer. Also, make sure the pot size fits the division-not too big, as excess medium can retain moisture longer and increase the risk of root rot. It sounds like you’re on the right track, just keep patient and observe how they respond after dividing. Feel free to share updates or ask if something comes up!

One more tip-when repotting, try to position the divisions so the new growth faces the outside of the pot, giving them space to develop. Also, avoid disturbing the roots too much while planting; just gently tuck them into the medium. If you notice any mushy or dead roots during the division, it’s best to trim them off carefully to prevent rot. Remember, slower recovery doesn’t mean failure, so don’t rush the process. Keep the environment stable with consistent temperature and humidity, and your Oncidiums should reward you with healthy growth and beautiful blooms down the line. Let me know how it all goes!