Plants are always losing water from their leaves, so cuttings (which don't have roots to draw in water), are especially prone to drying out. When taking cuttings, ensure you have a plastic sandwich bag containing a little water with you, to place your cuttings into.
The purpose of misting is to provide enough moisture on the leaf to prevent wilting and desiccation. Prior to sticking of cuttings, the propagation substrate should be irrigated to the point where water drips from the liner trays or moisture level 5.
Soggy soils and too much transpiration for the plant to keep up with water loss, as well as exposure to fungal infection are all common causes. Also, cuttings taken from weak parent material have the deck stacked against them from the outset.
keep them watered. Maybe put them under a fluorescent light about 1-2 inches from the cutting at 24 hours of light.
To maintain humidity and moisture, place the entire pot inside a plastic bag. Inflate the bag to keep the sides of the bag away from the cuttings as much as possible. Leaves touching the bag are more prone to develop mold between the leaf and the bag. Use a twist tie to seal the bag.
Add fresh, tepid water when needed. You can replace the water every few days, or simply top off the vessel with fresh water when it's looking low—as long as there is no murkiness or fungi growing. If the water is murky, we recommend replacing it for the health of the growing root system.
If you do not have a cold garage with a heating system, place the pot in a plastic bag as you would for herbaceous cuttings, and place in a warm room. In two or three weeks the buds will open, but the plastic bag should keep humidity around the leaves high and prevent excess water loss.
Most plants will not root well in full sun, so place the cuttings in a location where they will receive a 50/50 ratio of shade to dappled sunlight.
The problem is if the cutting is too long the plant is more likely to wilt and stress. If the cutting is wilting it's far more likely to fail and not generate roots. Smaller cuttings will lead to better success rates and overall better outcomes for you and your cuttings.
Soft, yellow, or black stems bring bad news: root rot. How to fix it? Instead of bright, strong new roots for your pothos or peperomia, your cutting has failed and is starting to decay. This happens as the water stagnates and bacteria in the jar overwhelms the plant.
Tip #2 - Save Your Dying Plant Through Propagation
Some succulents and cacti can grow a new plant simply by placing a healthy leaf in moist soil, encouraging new roots to sprout. Many other propagations can do the same when placed in a glass of clean water for a few weeks.
Cuttings are very delicate and vulnerable so pests, disease, the wrong growing conditions, too much water or too little water can all cause them to fail. Therefore it is vital that the plants you take your cuttings from are healthy, pest-free and growing strongly.
Remove the bottom leaves and buds of the shoot so the plant devotes its energy to forming roots rather than growing leaves or flowers. Sprinkle rooting hormone powder on a saucer. Dip the cutting in the powder, which will encourage root growth once it's planted.
And yes, there are also other ways to propagate, but water propagation is the simplest way to start if you're new to propagating plants, or simply want to speed up the process, as cuttings root faster in water vs soil, plus you can easily see what's going on each step of the way.
Additionally, it breaks down into water and oxygen, providing oxygenation to the rooting medium, which is crucial for root growth. Therefore, these benefits contribute to improved success rates and faster root development when using hydrogen peroxide for propagating your plant cuttings.
Misting is a technique for minimizing plant moisture loss by controlled periodic wetting of the foliage of cuttings which are being rooted. This technique is helpful for rooting leafy cuttings; however, succulent plants are usually not placed under mist.
Another way to reduce water loss is to keep the cuttings in a humid atmosphere – place a clear plastic bag over individual pots or use a propagator with a lid.
Snip a 6” long stem that has both a bit of new and old growth on it. Gently strip off the lower 2”-3” of leaves. Place in small jar of water and keep on a sill. Make sure to give your cuttings fresh water every 2-3 days, giving the jar a quick cleaning as well to remove any slime.
The cuttings will begin growing roots from the nodes within a week, and the cuttings will be ready to plant in pots within 3 weeks! Sometimes some cuttings are slower, though, so just keep those in water until the roots are about as long as the cutting itself.
Managing light is at least as important because inadequate light delays rooting while too much light can excessively increase leaf temperature and cause plant stress.
Cuttings can also be placed in plastic trays covered with clear plastic stretched over a wire frame (Figure 2). Trays must have holes in the bottoms for drainage. The plastic will help keep the humidity high and reduce water loss from the cuttings.
Adequate ventilation is also required to avoid disease problems. The plastic covering should be placed such that air can flow freely around the cuttings as they root. Temperature: For best results, maintain day temperatures at 70 degrees F.
Each cutting should have at least two nodes. The bottom cut should be made just below a node and the top cut one-half to one inch above a node. (A node is the point on the stem where a leaf bud is attached to the stem.) Learn more from this article: Propagation of Trees, Shrubs, and Vines from Hardwood Cuttings.
Ideally, the bag can be kept shut from the time the cuttings are inserted until they are rooted in 10 days to a month. Another related hazard is seepage of moisture from the bottom of the bag to the surface on which it is resting.