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Seattle, WA (Zone 8a)
Jun 7, 2020 1:40 PM CST
|I've been trying to propagate my polka dot plants for the past few months but it's been unsuccessful. I'm currently doing water propagation and the latest cutting have been sitting in there for a month now with no root growth. I make sure to change the water frequently and only use filtered water. I have it sitting in the bathroom for humidity and I've had successful propagation with my prayer plants in that exact location. What am I doing wrong?
Name: Will Creed
Prof. plant consultant & educator
Jun 8, 2020 9:28 AM CST
|Polkadot Plants are difficult to propagate because they tend to lose more water than most through their leaves until new roots have formed. That is why yours is dehydrated.
You might try shortening the stem so it has just the top 6-8 leaves remaining with a couple of bare nodes below that. Insert it into a very small 2-inch pot filled with a damp porous potting mix. Then enclose the whole thing in a clear plastic baggy that you blow up with your carbon dioxide and then seal it tight so no water can escape. That will keep the soil damp and also maintain the humidity around the leaves like a mini-greenhouse.
Keep it away from any direct sunlight when it is bagged otherwise it will cook inside!
Horticultural Help, NYC
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Jun 8, 2020 12:23 PM CST
|Hi! I've never tried water propagating pink polka dots, but I have propagated a few times via soil. If you're willing to use rooting hormone, I recommend picking some up. I've been propagating stems from mine with Rootone with pretty much complete success, though I do have to say I've been propagating with significantly fewer leaves. I noticed my propagations tended to faint a little at first, but recovered after a few days. If I left large leaves on the stem, however, the fainting pretty much continued until I trimmed off all but the top four to five leaves. After that, it seemed pretty autonomous; all I had to do was water regularly. Either way, I wish you luck!
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