dyzzypyxxy said:Yes, if the foliage looks healthy they might root. You will need to remove the flowers and just keep leaves on the cuttings.
But is the greenhouse temperature controlled? Cuttings will not root if it's too hot for them to take up moisture fast enough before the roots start to form. Keep an eye on them, and if they start to wilt, they're done. If they stay perky, and then begin to put on new growth, you have roots.
Chrysanthemums are better propagated by divisions of the clump either in late fall or early spring.
dyzzypyxxy said:All good ideas, David, except for the direct sun part. I think at the very most you should let them be in the low angle sun for a couple of hours in the morning, then shade them under some other plants for the rest of the day.
Once they have some roots established, then you can gradually move them out to more and more sun but I think cuttings will fry in too much direct sun.
dyzzypyxxy said:I was thinking of an indoor window sill, David. Out of the snow. I seem to recall you let your place get quite cool during the day while you are at work (a thread a while ago?) which would suit keeping basil cuttings going as long as you have enough natural light for them, or you could keep them going in a greenhouse, too.
Starting some plants from seed is very tricky, so don't feel bad that you only got two plant out of your portulaca seed packet. As you get more experienced at it, your results will improve. Again, this is an exercise in patience as much as growing your gardening skills.
You need to pick your battles - grow things from seed that are easy. Have you tried Nasturtium? They are gorgeous, start easily from seed and love a hot, dry climate like yours.
If you really want portulaca, I would buy transplants already started. They die on me here, because of the humidity so I feel your pain.
dyzzypyxxy said:They might self-sow, they might survive the winter outside on/in the soil, and they might or might not cross and produce more colors. If the two plants you have are two different colors, you might get the same two colors or a cross of the two. If your neighbors are growing portulaca and the pollinators cross, you may get more colors.
So many "if's". Short answer is, I really don't know. I've always bought transplants of portulaca in the colors I wanted, and they have not lived long enough for me to self-sow. They really do not like our heavy summer humidity.
Cover your bases and collect some seed if you can. Also try starting more plants from cuttings if your plants get big enough. With their lax, spreading habit I'm pretty sure they will root at the leaf nodes.
How are the chrysanthemum cuttings doing?