Geraniums are among the easiest of plants to propagate from cuttings: no need even for a rooting hormone; just stick them in sand or potting soil and forget about it. For softwood cuttings of most other plants, I use four-inch pots that a Dollar Tree cup fits on top of perfectly. They are green, but you can see through them. I fill the pots with a mixture of perlite and sand or even potting mix with perlite, and put a prepared cutting into each hole, top the pot with the Dollar Tree cup and put it in a shady spot in the greenhouse. I try not to be too curious and lift the tops to examine the cuttings because then all the moisture escapes.
But do you know what I use for rooting cuttings that is perfect for some plants (particularly lobelisas and some vines)? I use a cup of willow water. I always keep containers (and even buckets) of willow water - with the willow branches - in the greenhouse and experiment with rooting various cuttings. It doesn't work on everything, so you just have to experiment, but it truly is a "miracle" water.
