What should I do when my geranium cuttings start to turn yellow please?

You should keep them in water until roots have begun to grow - so if your yellowing ones are potted up take them out, trim the end of the stem, remove seriously yellowed leaves, and put them in water. When roots have developed pot them again, if no roots develop within 2-3 weeks then discard. Healthy geranium cuttings are generally almost 100% success rate, but the yellowing suggests you might be better off starting again with fresh cuttings if you can.

What should I do when my geranium cuttings start to turn yellow please?
You may be over-watering them, or they might need fertilizer or iron, or they are kept too warm.
Reply:Cut the end of the stems off to freshen them up. Then place them in water with a little sugar and salt added. They will last much longer.
Reply:Go to the doctor?
Reply:Were you trying to root them and they turned yellow. Sometimes that just happens before they take root and then they will come back to life and spread. Some make it and some don't. I think if you put Vitamin B in the soil and just baby it, water it and put in the sun, it might just be ok. You will know later of course, but don't give up. If it gets really limp like it is going to die, then that might be too late, but if it just goes a little yellow but the stalk is still green, just leave it alone and will eventually be ok, it might take into the next season, but time will tell. They can really spread just from a cutting, so hang in there. Unfortunately, the snails like them and draw the snails, but you can put snail bate if you have no animals to protect with the bait as it is poison to animals, dogs, cats, etc., pets.
Reply:Things to consider:


Where were the cuttings taken from (leaf, twig, stem, root, old growth, new growth)?


Do you have a big cutting that can't get the nourishment it needs from the cut end? Shorten the stem or remove leaves low on the stem allowing more food to get to the upper, growing tips.


Is the water clean or getting moldy? Keep it clean.


Do not keep it too hot or too cold, room temp is ok.


Do not give it full sunlight, it can't use it now.


Too much fertilizer can kill a plant. If you must fertilize, use very little and use something with a high proportion of phosphorous (the second number)- it helps roots grow.


Sugar in the water might help. Vitamin B complex might help.


Salt in the water won't help.


Some plants root best if put in a damp medium such as peat moss or perlite. When roots form, do not try to remove the rooting medium, just place the soil with embedded roots into a more permanent pot. Roots need air too, so drowning them in water or very wet soil can kill even healthy roots.


Cacti have weak, sensitive roots that rot easily but I rooted a broken piece in damp perlite in a month or so.


The biggest mistake people make is "loving their plants to death" by giving them too much water or too much fertilizer. Too much of a good thing is not good.
Reply:cut them down and put indoors 4 the winter
Reply:give them more light