Propagating Plants by Layering

Propagating Plants by Layering

Vegetative plant propagation is a way for one plant to create another plant without the need for pollination to occur. This process is often much faster in achieving a new plant than growing from seed.  The genetics of the parent plant can be carried on through this vegetative propagation method.  There are many methods to propagate plants and the one covered in this article was taught to me by my grandmother many years ago – layering.  Layering is a science and an art and has been performed by humans for over four thousand years. 

Propagating plants by layering can be accomplished in several ways, including simple, tip, air, mound, compound, and runner production layering methods.  Many plants in nature propagate by layering accidentally when long, low-lying limbs contact the soil around the plant and are eventually covered by leaves from other surrounding trees and shrubs.  This creates an organic cover over a part of the limb and keeps the area moist.  This creates the situation for adventitious roots to develop at the soil contact area.  This occurrence is called simple layering and is often mimicked by gardeners in the landscape.  Not all plants respond to this type of propagation, but several common species that do are azaleas, jasmine, viburnum, climbing rose, and grapevines. 

Unlike simple layering, tip layering involves digging out a shallow 3–4″ hole, which will allow space to bend the end of the branch down into the hole with the tip out the other side.  Then, simply cover the hole to keep the branch in the ground.  It may take something with a little weight placed over the covered hole to keep the branch from popping out.  A brick or rock may be all that is needed.  Both methods will take months for enough roots to develop before clipping the branch with a new plant ready to be dug and set somewhere new.  For best results with both simple and tip layering, begin either in early spring with last seasons growth or late summer, utilizing that current year’s growth. 

Simple layering
Simple layering. Photo Credit: Stephen Greer, University of Florida/IFAS – Santa Rosa County

Air layering is a fun adventure to rooting a new plant and can be used with both outdoor and indoor plants.  It can be used on outdoor plants like camellia, azalea, maples, and magnolia, or indoor plants including weeping fig, rubber tree, and dieffenbachia.  This type of layering requires a bit more planning and preparation than simple or tip layering.  If the plant has a bark layer surrounding the cambium layer (this is the growing part of the limb and trunk and appears green) this area will need to be removed with a sharp clean knife.  Choose a 1- ½ inch long area of the limb and scrape this area to remove the cambium layer located just beneath the bark. This is done to prevent the outside limb area from reconnecting back to the limb portion connected to the plant.  Sphagnum moss will be needed to wrap around the wound site to create a rooting zone.  Be sure to soak the moss with water by immersing it in a bucket of water, then squeeze it out.  Wrap the moss with plastic wrap, making sure the moss is fully covered and tucked inside of the plastic.  Both ends of the plastic wrap need to be secured tightly with twist ties or string.  Make sure it remains tight throughout the 2 – 4 months needed for rooting to occur.  If this process takes place in a sunny location, cover the plastic wrap with tin foil to block out the light. 

Air layering a camelia
Air layering a camelia. Photo Credit: Stephen Greer, University of Florida/IFAS – Santa Rosa County

There are other methods to layering plants and if you are interested, search online through the University of Florida IFAS EDIS site or contact your local UF IFAS Extension office in your local county.  Enjoy growing your new plants. 

Winter Beauties

Camellia
Photo by Kathy Warner
UF/IFAS Master Gardener – Nassau County

With their shiny green leaves, compact growth habit and unique blooms, camellias are the winter queen of flowering shrubs.  Worldwide, there are about 250 different species of camellias.  In the landscapes of Northwest Florida, the most commonly grown species are Camellia sasanqua, Camellia japonica and hybrids of these.  Collectors and botanical gardens may have Camellia reticulata, Camellia hiemalis, Camellia vernalis and hybrids of multiple species.  The young leaves of another camellia species, Camellia sinensis, are processed for tea, one of the world’s most common beverages.  The various species of camellia plants are generally well-adapted to acidic soils, especially those rich in organic material.  Camellias requires consistent watering, particularly once the flower buds are set.  Most species prefer protection from direct sun during the heat of the day and will bloom well in significantly shaded areas.  Individual species and cultivars bloom seasons vary with growing climate.  Camellias are classified by their blooming time, ranging from early to late season, relative to other camellias.  For extended flowering, plant a variety of cultivars.  Early-fall bloomers begin in October and re-bloom through January.  Long-bloomers add a few months with flowers from November to April.  Camellias that start opening in January and continue through March are referred to as mid-season bloomers.  Spring blooming camellias are the last to flower, from March to May.  When deciding on particular cultivars also consider the various flower shapes.  There are six flower forms, with changes in number of petals and appearance of stamens. Camellias do come with a few potential pest problems.  For information refer to: https://gardeningsolutions.ifas.ufl.edu/care/pests-and-diseases/pests/camellia-pests-and-problems.html

COVID 19 has resulted in many cancelled events.  But, you may find a local camellia show to see some the fantastic blooms of many different cultivars.  Here are a few options:

December 12, 2020
Pensacola Camellia Club, University of West Florida, Conference Center & Ballroom, 11000 University Parkway, Building 22, Pensacola, FL, Skip Vogelsang, (850) 776-7951, lbv3rd@gmail.com

January 10, 2021
Northshore Camellia Club, Southern Hotel, 428 E. Boston St., Covington, LA, Show Chairman: Hunter Charbonnet, hcherbo1@gmail.com, Contact, Judges’ Chair & Show Reporter: James Campbell, rivercamellia@bellsouth.net, (985) 630-9899,

January 16, 2021
Ozone Camellia Club, Slidell Municipal Auditorium, 2056 Second Street, Slidell, LA, Show Chairman: Jim Campbell, rivercamellia@bellsouth.net, Show Contact: Bruce Clement, (985) 259-5527, bwc555@charter.net, Show Reporter: Stella Allen,

January 23, 2021
Camellia Club of Mobile, The Shoppes at Bel Air, 3299 Bel Air mall.,Mobile, AL 36606, Show Chairmen: Walter Creighton & Larry Heard, larry_heard@bellsouth.net, Show Contact: Larry Heard, (251) 661-9392, Judges’ Chair: Jim Smelley, Show Reporter: Jim Dwyer,

Camellias: Color Through the Cold

Camellias: Color Through the Cold

camellia-japonicaCamellias have been a part of the landscape in the Southeastern United States for over 200 years. They are native to Asia and were introduced near Charleston, South Carolina in 1786. The common name camellia refers to varieties and hybrids of Camellia japonica and to lesser known varieties of C. sasanqua and C. reticulata. The growing conditions in Northwest Florida are well suited for many camellia varieties. Camellias can serve several functions in the landscape including foundation plantings, screens, accent plants, background groupings and hedges. Maximum benefit can be achieved by mass plantings or groupings. Single plants should be focal point in beds rather than randomly placed throughout the lawn. Camellias flower in the fall and winter when their display of colorful blooms is most appreciated. During the remainder of the year their evergreen foliage, interesting shapes and textures, and relatively slow growth make camellias excellent landscape plants. Some camellia growers enjoy competing in flower shows and manipulate the flower buds to achieve larger and earlier flowers. This involves removing competing flower buds and applying gibberellic acid (a plant hormone). Individual cultivars can be selected for size and form ranging from small and irregular to large and upright. Texture and foliage color also differ among the various species and multiple varieties. Mid-season flowering varieties that bloom from November through January are best suited for Florida conditions.Camellia Tea Scale Camellia Tea Scale 2Warm fall temperatures may prevent early varieties from flowering properly. Late-blooming selections may attempt to send out new leaves before the end of the flowering period which results in “bullnoses”. Bullnosing is characterized by poor quality flowers which do not open fully and may even drop while still tight buds. Extended dry periods while in the bud stage can make the condition more likely. While flowering, camellias need 1 inch of water applied each week. Camellias perform best in partially shaded locations which are enhanced by good drainage and air movement. Fertile, acidic soils high in organic matter are preferred. The soil must be well-drained because camellias will not grow in wet areas. Do not plant them in areas with a high water table and/or hard-pan. This will result in a shallow root system which is more susceptible to injury during dry periods. Camellias should be installed where cold air can move in and out freely, but the area should be protected from strong northwest winds. Plantings under established trees or in areas that has structures to block the wind are usually injured less by cold temperatures. These conditions enable the plants to gradually thaw or warm in the morning before being exposed to direct sunlight. Dense shade may result in sparse foliage and poor flowering. Camellias exposed to full sun may appear yellow-green, but may yield more flowers. Either situation is stressful to the plants and can lead to pest problems. Tea scale is the most common insect on camellias. Scales generally feed on the underside of leaves and may not be noticed until large populations have developed. Symptoms include very small elongated white and/or brown raised “flakes” on the underside of leaves that turn yellowish in color. Tea scale can be controlled with horticultural oil, sprayed after flowering finishes but while temperatures are sill cool, in late winter.