I know what you mean about too many plants Iam! It's too easy to pop too many in the jar.
Thanks for the heads up on some dead horses, Bob
You could always put your extras on the seed and plant swap B3. Just sayin'
I did quite a few like this this year. Shrubby salvias like 'Hot Lips' and herbaceous ones like S. 'Amistad' and 'Love and Wishes' (all these rooted rapidly); Verbena bonariensis and rigida (rooted rapidly); Nepeta 'Junior Walker' (after a couple of weeks or so), Cuphea cyanea (rapidly), Vietnamese coriander (presumably other persicarias too),
Helichrysum italicum took a while to root in water, and not all plants rooted, I transferred to a pot in the shade outside and most did root though.
It's a technique that's so simple there's nothing to stop you having a go with all sorts of things.
Sedums are easy.
You can get results from lavender if you plant the whole tired looking clump deep into the ground with top bits showing and they seem to start rooting. I wonder if the existing old wood provides enough energy to get it going. I have never suceeded otherwise with lavender.
Phlox doesn't root in water. Tried it didn't work.
˄˄ Re lavender, worth trying hardwood cuttings in mid autumn. Stick em in a ridge of soil with some sharp sand worked in.
Semi-hard Weigela cuttings usually root.
I take cuttings of Brugmansia in Autumn. They live in a jar of water in the kitchen windowsill all winter, then I pot them up in Spring. They will usually flower the same year.
Ooh Brugmansia... I would like to try growing that next year!
I root in water: basil, all kinds of mint, hibiscus (the hardy sort), hydrangea, fuchsia, busy lizzie, penstemon, rhododendron, geranium. I stick everything in a jar of water by the kitchen sink, hoping they’ll behave. Some do, some don’t.
I grow lavender cuttings in pure sharp sand. I propagate thyme and heather by plunging the whole pot, up to its ears, into a larger pot of sandy compost. Several weeks later, I have many branches with new roots.