What is herbaceous stem cuttings?

Commonly called purpletop verbena, Verbena bonariensis is a herbaceous perennial plant grown for its showy clusters of fragrant, pinkish-purple flowers. It grows well within USDA zones 7 to 11, where it is sometimes added to perennial beds and borders to attract beneficial pollinating insects such as butterflies and bees. Like most members of the vervain family, Verbena bonariensis will propagate effortlessly from herbaceous stem cuttings taken in late spring or early summer. The freshly rooted cuttings must be protected from the hot summer sun if they are to flourish and reach their ultimate height of 3 feet.

Combine equal measures of perlite and milled coir or peat moss. Mix the two components by hand until the perlite is evenly distributed throughout the milled coir or peat moss. Drizzle water onto the mixture until it feels moderately moist.

Pack the mixture into a 4-inch plastic pot. Leave a 1/2 inch space between the surface of the mixture and the lip of the pot.

Locate a healthy stem with plenty of leaves but no flowers or buds. Measure 2 to 4 inches from the tip of the stem. Cut the stem straight across using pruning shears, or simply pinch the cutting free using your fingernails.

Strip off the leaves from the lower two-thirds of the cutting. Coat the leafless portion of the Verbena bonariensis cutting in 0.1% IBA (indolebutyric acid) rooting powder. Tap the stem to dislodge the excess rooting powder.

Pot the cutting as soon as possible after gathering it. Poke a hole in the perlite and milled coir mixture using your fingertip. Make the hole equal to two-thirds the length of the cutting.

Stick the Verbena bonariensis cutting into the hole until the bottom leaves are just above the surface of the mixture. Firm the mixture around the stem to remove any trapped air.

Place the potted cutting atop a propagation mat in a partially shaded location away from direct sunlight. Set the temperature on the propagation mat to 68 F. Cover the cutting and pot with a 1-gallon plastic bag to help hold in the heat.

Remove the plastic bag every three days for 15 to 20 minutes to improve air circulation around the cutting, to keep it from rotting.

Test the rooting mixture for moisture with the tip of your finger every three to five days. Water the cutting only when the mixture feels dry at a 1/2-inch-depth. Water it to a depth of 1 inch using a spray bottle; do not pour water into the pot because the soil will take on too much moisture.

Check for rooting in three weeks. Grip the base of the stem between your thumb and forefinger and gently tug on it. Feel for resistance to the movement, which indicates successful rooting.

Verbena propagates easily from cuttings.

Many phases of propagation

2009-07-01 10:34:10 by AnitaMoPlants

You were correct in eliminating some of the leaf surface and making a shallow wound in the base of the stem.
For soft wood stem cuttings one usually makes a clean cut just below a node in the stem and then a one inch sliced wound .
You may not have lost the plant. Roots may form this autumn.
The leaves may have fallen from drying out or perhaps a fungus formed in the soil
With evergreen leaf cuttings I sometimes will put plastic over the cuttings to keep the humidity up .
Environmental control such as stress, too much water, not enough light or a soil fungus appearance are all plausible reasons for the leaf drop


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