Do Phalaenopsis seedlings need to be divided into separate pots, and can the old plant still survive?
A little seedling has popped up in the Phalaenopsis pot - should it be divided into its own pot or not? Will dividing it harm the old plant? But if it's not divided, the seedling might get crowded and not grow well. Today let's talk about this - all practical experience, easy for beginners to understand too.
When a Phalaenopsis seedling first emerges, don't rush to move it - it hasn't yet developedits "independence." Wait until the seedling3has grown more than 3 leaves and put out three or four aerial roots, each as long as a little finger - only then is it reliable to divide the pot. If the seedling isn't even as big as your palm and its roots are as thin as hairs, forcing a separation will surely kill it.

There are also tricks to dividing the pot - don't just yank and tear. Find a sterilized small knife and gently cut at the spot where the seedling and old plant are connected, dab some carbendazim on the wound, and let it dry for about half a day. The new pot shouldn't be too big - just one size larger than the seedling's root system. Plant it in pure sphagnum moss or bark, water it thoroughly, then put it in a spot with indirect light to recover for half a month, and it will basically survive.
Now some flower lovers worry: after dividing off the seedling, can the old plant still survive? Actually there's no need to panic at all. Although the old Phalaenopsis may look a bit haggard, with yellowing leaves or aging roots, as long as its core hasn't rotted and there's no black rot, with good care after division it can still recover. The old plant is like an elder in the family - though its energy isn't what it used to be, its foundation is still there. Give it a light nutrient solution, keep it ventilated, and after a while it will put out new roots, and some can even send up new flower spikes.

Looking at it the other way, if the seedlings grow too densely, that's when the old plant is really in danger. So many seedlings competing for nutrients will make the old plant's leaves thinner and thinner and yellow in color, and over time the whole plant may wilt. Last year the Phalaenopsis at my office - just because I couldn't bear to divide the pot, the old plant slowly rotted, and the seedlings didn't grow well either. In the end only two were saved, which was such a shame.
Of course there are exceptions. If the old plant itself is sickly, with soft drooping leaves and spots, then the seedlings that emerge should best be divided early. While the seedlings haven't been infected yet, quickly separate them and grow them on their own - maybe you can save the next generation. As for the old plant, if it really can't be saved, don't feel too bad; trim off the healthy roots, and maybe it can even be stimulated to sprout new shoots.

When a Phalaenopsis grows seedlings, whether to divide the pot depends onthe "condition of the seedlings" - don't do it too early or too late; after dividing, as long as the old plant is cared for properly, it will most likely survive. Remember, plants are far tougher than we think. When it's time to act, act - don't let a whole pot of flowers crowd together. That way, whether old plant or seedling, they can all grow open and vigorous.