Many indoor houseplants, such as, begonias, coleus, polka-dot-plant, ivies and philodendrons root easily in water. Other plants, including many woody plants such as hibiscus and citrus will not root well in water. They usual rot before rooting.
Place the cutting in a clean glass. Poor enough room temperature water to cover the nodes of the cutting. Change out the water every 3-5 days with fresh room temperature water. Wait and watch as your roots grow!
A range of herbaceous plants can be propagated from root cuttings. These include Acanthus, Anemone hupehensis, A. x hybrida, Echinops, Papaver orientale (oriental poppy), Phlox, Primula denticulata and Verbascum.
Root Cutting
Examples of plants that can be propagated from root cuttings include raspberry, blackberry, rose, trumpet vine, phlox, crabapple, fig, lilac, and sumac.
This. Propagation for many plants is best done in potting soil, but some plants can be propagated in water. This is because they have evolved in an environment that allows it. Most Aroid plants can be propagated in water, including pothos plants, philodendrons, monsteras, and ZZ plants.
If you root your cutting in water, it develops roots that are best adapted to get what they need from water rather than from soil, Clark pointed out. If you move the plant immediately from water to soil, the plant may be stressed. Instead, add a small amount of soil to the water that you're using to root your cutting.
Plants such as butterfly bush, rosemary, and dogwood root well from softwood cuttings. Greenwood cuttings: taken from young stems that are starting to mature, but still in their first year. They're usually cut in early to midsummer. Shrubs such as gardenia and boxwood tend to root well from greenwood cuttings.
The four main types of stem cuttings are herbaceous, softwood, semi-hardwood, and hardwood. These terms reflect the growth stage of the stock plant, which is one of the most important factors influencing whether or not cuttings will root. Calendar dates are useful only as guidelines.
As long as you give them proper nutrients in the water, they can thrive indefinitely without soil.
As soon as you see small white or yellow nubs appear on the stem (these are future roots), transfer them to potting soil so they can start their life in an appropriate terrestrial environment. In some cases, that means your “cuttings in water” will need to be potted up in just 3 or 4 days!
Cinnamon has some antimicrobial properties so it might help prevent bacterial growth that could harm your cutting. But it will not help your cuttings to create roots. There are many more such recipes floating around on the internet, that involve Aloe, or coconut water, or willow bark concoctions.
Use cinnamon when propagating. The cinnamon doesn't actually act as the plants auxin hormone (rooting hormone), rather, it's a natural antibacterial, antimicrobial agent, that works as a fungicide. This allows the natural rooting auxins that are found in the green growth of your cuttings to thrive without competition.
Roots need air in order to grow. You should try and change the water with fresh tap water every 2-3 days or so for best results because oxygen in the water will be depleted.
Some plants like papaya, marigold, chilli, capsicum, tomato, etc., cannot be propagated by asexual method.
Method 1: Water Propagation
This is by far the most common and simplest way to propagate a plant. All you need to do is take a cutting of a plant that has a node. Plants that do well with water propagating are Pothos, some Philodendron, and Monstera just to name a few.
The simplest method is planting seeds; division & stem cuttings are fast; and with layering, there are almost no failures.
It's possible to start stem cuttings in either soil or water. However, soil is usually the preferred method. It generally produces healthier roots and results in less shock to the cutting when you ultimately plant it in a different soil-filled container or the ground.
Most frequently, however, either a stem or leaf is used. A stem cutting includes a piece of stem plus any attached leaves or buds. Thus, the stem cutting only needs to form new roots to be a complete, independent plant.
He says to cut three to four inches of the stem below the leaf node. Place these cuttings in water and you should see them begin to root by seven days at most. These plants can then be placed in the soil when the root clusters are one to two inches long.
Add a Pothos! I'd heard of using willow as a natural rooting hormone, but didn't know Pothos has this 'super power' too. Just pop a Pothos cutting in with the water with your slow-to-grow cuttings and it helps speed up root development.