How to Grow a Mandevilla Vine From a Cutting. Tend the Cuttings. Propagating mandevilla from seed isn’t difficult, though it is best achieved with fresh seeds. Keep the water clean. Mandevilla (sometimes called Dipladenia) is a lush, tropical climber that flowers flamboyantly all year round In warmer climates. Routinely remove 'water shoots', the fat, soft stems that are useless for training and shaping. The cuttings should be as thick as a pencil and between fifteen to thirty centimetres long. Here are 5 ways to overwinter a Mandevilla plant or vine: Bring the entire plant into your home and grow it in a container. Sundaville® is a very strong plant for outdoor use in tubs and baskets. How to Trim a Mandevilla Trimming a mandevilla in the right way will help encourage new growth all year long. For better results, soak the mandevilla seeds in water for about twelve hours prior to sowing them in well-draining soil. After watering, allow the cutting to sit undisturbed. Container Gardening. When you come back from holiday, the flowers will still be blooming in your garden. Cuttings ought to be taken around June, when the changeable spring has passed and the summer is approaching. Remove the leaves and buds from the lower part of the cuttings. Alternately, providing the plant with a top dressing of organic compost may give the plant the nutrition it needs to grow and flower. when propagating mandevilla by cuttings. Change out the water every 3-5 days with fresh room temperature water. Take 2-3 tip or side shoot cuttings that have new growth that is beginning to firm (not new light green growth) remove all … Water once a week. Trim tips or side shoots at a length of about 3 inches. High-light situations increase their demand for fertilizer. Wait and watch as your roots grow! There are several easy ways to start a new mandevilla plant, including seeds and softwood cuttings, but propagating mandevilla from tubers probably isn?t a viable method of propagation. Water the potting mix until it is evenly moist throughout, but not soggy. Available in many vibrant colors, these guys are a magnet for bees and butterflies. Once roots develop within a month or two, you can pinch back new growth to promote bushier growth if desired. If the pot or bucket is strongly rooted, Mandevilla should be replanted – typically every two years and ideally in spring. Keep the growing medium moist but not soggy. Semi-hardwood cuttings: Fill sterilised pots or a propagating tray with moist propagating mix then you are ready to plant some cuttings. Learning how to propagate mandevilla is easy. Remove the plant from the container, gently tease the roots. Dipladenia sanderi 4. Once roots develop within a month or two, you can pinch back new growth to promote bushier growth if desired. What is the lowest temperature a Mandevilla can tolerate? Mandevilla vine is very easy to propagate from cuttings. Take trimmings that include at least one leaf joint, and put them into distilled water. While they may look alike, there are some key differences. Mandevilla is a tropical, flowering vine that has become popular in landscapes and in pots on decks, patios, and porches thanks to its colorful flowers, long bloom time, and low-maintenance characteristics, says Justin Hancock, a Monrovia horticultural craftsman. Choose cuttings from vigorous side shoots with mature bark and at least two leaf nodes near the base. I'm in z5, and I want to be able to do two things: Bring my two potted vines in for the winter, and propagate cuttings in water. Remove any leaves from the bottom third of the cutting. Propagating Mandevilla: Using Mandevilla Cuttings Or Seeds To Propagate Mandevilla Vine. Use: Sun Parasol® Pretty plants are climbers by nature and produce lots of flowers due the plants strong branching habit. New, slightly reddish roots should emerge from the bottom of the stalk. The plants dies back with the first frost. Water the newly planted cutting thoroughly. This minimizes the amount of moisture lost. Many plants, such as spider plants and pothos vines, readily root in water. Mandevilla plant can be easily propagated from cuttings to make new plants. Allow the potting soil to drain thoroughly, before placing the pot back onto the drainage saucer. How to propagate mandevilla cuttings in water? Instead, place the container in a location … Propagating Mandevilla . Before you take any cuttings, it is a good idea to prepare your pots. Height: with climbing aid up to 5 m 8. Place the stem cutting in a jar of water. Aug 3, 2013 - Mandevilla vine is known for its showy blooms. Fill a 5-inch planting container with a well-draining potting mix. Another way to winterize mandevilla is in a dormant stage in a garage or cool basement with temperatures around 45-55F. Place the cutting in a clean glass. © Copyright 2020 Hearst Communications, Inc. Mandevilla vine is very easy to propagate from cuttings. I discovered my Daturas root well in just a jar of water. I'm in z5, and I want to be able to do two things: Bring my two potted vines in for the winter, and propagate cuttings in water. At this point, I transplant cuttings into small pots. Now that you know how to grow mandevilla seeds or root mandevilla cuttings, you can grow this lovely vine year after year. Water once a week. Shelter the entire vine in your home with a trellis or staking. Make each cutting 2 to 3 inches long, with two or three leaves at the top. Don’t forget to refill the tray with water when it dries out! Dip the cut ends in powdered rooting hormone and insert them into sandy peat soil. They are generally grown on trellis. However Sun Parasol® Classic plants tend to remain as a shrub when exposed to full sun conditions. Hollie is a life-long gardener, having started helping her Dad work on their yard when she was just 5. Be careful not to overwater your bougainvillea cutting. Before you take any cuttings, it is a good idea to prepare your pots. Alternatively, place the pots outdoors in a sheltered location out of direct sunlight. Mandevilla cuttings need misting to keep them moist and healthy. This can take weeks to months depending on the plant. Flowering period from May to October 9. Use a sharp knife to cut the stems just below a node -- a small bump protruding from the stem where a new leaf or buds is about to emerge. Prepare the Pots Find a 4 inch pot and place a coffee filter at the bottom. The Spruce What Are the 19 Easiest Plants to Grow From Cuttings? You can definitely try to start new plants if the stem cuttings are green and clearly alive. Garden Design. Mandevilla cuttings should be grown in their original rooting pot for a few months before being transplanted into individual nursery containers to finish growing. A. It is generally grown as a vine but can also be pruned to maintain a shrub-like upright shape. Answered by BushDoctor on September 12, 2017 Certified Expert . Habit: Sun Parasol® plants have a climbing habit. 1. Once the mandevilla seed pods have dried, they will turn brown in color. 3. Plant one plant per 12 to 14 inch container to work best. Genus: Mandevilla 3. Can a Mandevilla Be Started From the Tuberous Root? There are two ways to root stem cuttings: in water and in a growing medium. After the Mandevilla reaches 6 to 12-months old, the gardener can fertilize cautiously, using a slow-release fertilizer product diluted with plenty of water. Place the pot near a window with bright, filtered light where temperatures stay between 70 and 75 degrees Fahrenheit. Mandevilla propagation is accomplished by seed or cuttings. Sep 13, 2013 - This is Mandevilla cuttings being rooted. Remove all but the top 2 leaves (you want the plant focusing on making roots). How to grow bougainvillea from cuttings You can make your own extra bougainvillea plants by taking cuttings in summer or early autumn: Take 15cm-long cuttings from the new shoots with a little bit of the old growth attached. Prepare all the necessary tools and equipment before gathering the cuttings so they can be planted right away. As the water evaporates from the tray, it creates constant humidity for you plant. Sasha Degnan is a freelance writer and educator specializing in gardening and horticulture. It prefers a sunny spot in sandy soil with good drainage. Remove all but the top two leaves. She has nearly 25 years of experience in the propagation and care of plants.. Move your Mandevilla plant into a heated greenhouse. Choose a pot at least 600mm wide. If you choose to use a humidity tray, ... How to Take Cuttings. There are a number of ways to propagate the vine. Press the soil firmly against the stems. The University of Florida IFAS Extension says that mandevilla cuttings will root in four weeks under the right conditions. Keep the mandevilla cuttings well watered but let the soil dry out on the surface between waterings. They root very easily and will root even in a glass of water. The mandevilla cuttings rotted along with everything else except for the willows, green ivy (several cv's), Swedish ivy, hibiscus, acuba and sweet potato vines (Tricolor SPV rotted) which all formed roots or at least root nodes, so far. The coffee filter keeps the soil in the pot, but allows the excess water to drain out. In contrast, dipladenia likes to send its foliage trailing down towards the ground. Feed mandevilla every other week, using a fertilizer high in phosphorus, with a ratio of 10-20-10. Common name: Rocktrumpet 5. Mandevilla vine is very easy to propagate from cuttings. When it does bloom in late summer the large, trumpet-shaped, tropical flowers are outstanding with its bright pink, red and yellow colors. When I cut my mandevilla back to bring in for the winter I put the cuttings in water. long. 7,560 views Hollie Carter. Cuttings should be made from tips about 6 inches long and trim off the bottom leaves. Mandevilla plant can be easily propagated from cuttings to make new plants. Cuttings should be made from tips or side shoots and about 3 inches (7.5 cm.) According to North Carolina State University Cooperative Extension, it grows best within U.S. Department of Agriculture plant hardiness zones 10b to 11a, where cultivars such as Alice du Pont (Mandevilla sanderi 'Alice du Pont') are especially in demand for their 4-inch-wide, pure-pink flowers and low-maintenance care requirements. While the best time to take cuttings is in spring, you can also take them in late summer or fall with some success. Mandevilla vine is known for its showy blooms. Be careful not to overwater your bougainvillea cutting. A healthy drink will encourage it to begin putting down new roots. The best time to take cuttings is in the spring or early summer. Dipladenia is a tropical vining plant similar to Mandevilla.Many gardeners grow Dipladenia vine from cuttings, either to grace a garden bed or patio or to grow in a pot as a hanging houseplant.If you are interested in rooting Dipladenia plants read on and we’ll tell you exactly how to do it. Place the mandevilla cuttings in a somewhat shady area and keep them warm, moist, and humid. Click here to learn more about mandevilla plant tubers. Mandevilla as a houseplant can be trimmed back to make it manageable and needs a sunny window to flourish. Learning how to propagate mandevilla is easy. Rooting lucky bamboo in water. Garden … Keep the bougainvillea cuttings damp. Mandevilla, now botanically known as Dipladenia, is a popular vine with shiny green leaves and trumpet shaped flowers in red, white, pink, yellow or apricot.This tropical vine is only hardy in frost-free areas. Be careful not to break their delicate new roots and be sure to plant them at the same depth they were growing in their original container. atomiser for spraying water. 1. Name – Mandevilla species Family – Apocynceae or dogbane Type – shrub, climbing vine Height – 10 feet (3 meters) Exposure – well-lit Soil – well-drained. Climbing Flowers. I’ve read people don’t have any luck propagating mandevilla cuttings in plain water but wonder if there’s a trick to it, like adding something to the water, or other tips? Mandevilla vines (Mandevilla spp.) Click here to learn more about how to propagate mandevilla. Mandevilla is mostly grown in New England as an annual and/or houseplant. Sign up for our newsletter. Just don't overwater them until they settle in and put out some feeder roots. Propagating Mandevilla sanderi in foam medium (Bricks Oasis Floral Foam) ensures successful and uniform rooting because of the following reasons: Foam medium is engineered propagation medium formulated with optimal air/water ratio and is consistent from … But water also can cause fragile roots to develop, and some plants might resist rooting in water altogether. It climbs very high and bears flowers prolifically. Give water in depth once a week, keep the soil moist but do not be soggy, for this you should arrange good drainage. Family: Dog bane family, all plant parts are toxic 2. Mandevilla as a houseplant can be trimmed back to make it manageable and needs a sunny window to flourish. Keep plants well watered and fertilized to stimulate vining growth and flowering. Prune mandevilla in late winter or early spring. Growth: hanging, climbing, upright growth, perennial, evergreen 7. A healthy drink will encourage it to begin putting down new roots. Cover the pot with a 1-gallon plastic bag to help hold moisture and warmth around the cutting. Choose side shoots 2-3 inches long and cut them from the plant. Sign up to get all the latest gardening tips! Change the water in jar for every 2-3 days. Another way to winterize mandevilla is in a dormant stage in a garage or cool basement with temperatures around 45-55F. Mandevilla (Mandevilla x amabilis) is a hybrid that grows to be a large vine reaching 8 to 10 feet tall. Hardy and versatile, it flowers in shades of deep burgundy, scarlet, through all shades of pink and white. You can propagate it from seed—it’s best to soak the seeds for 12 hours before planting. In fact, it may be helpful to place them in a plastic bag (with small air holes to release excess moisture). Feed them with 1/2 teaspoon of soluble fertilizer added to 1 gallon of water, replacing one watering per week with the solution, as recommended by Logee's Plants for Home & Garden. Remove any mandevilla seed pods, flowers and buds and strip off the leaves from the bottom 2 inches of the cutting. add year-round ornamental appeal to gardens with their pink, trumpet-shaped flowers and … Poor enough room temperature water to cover the nodes of the cutting. Mandevilla is a longer plant that produces largely vertical growth. It's possible to propagate mandevilla via seed, but it can be easier to do with cuttings in spring. Can I expect the same with Mandevilla cuttings? They can be without water for a long time. Feed mandevilla every other week, using a fertilizer high in phosphorus, with a ratio of 10-20-10. A. Flowers: funnel-shaped, 5 – 10 cm 10. North Carolina State University Cooperative Extension, Texas A&M University Department of Horticulture, North Carolina State University Cooperative Extension: Mandevilla sanderi, University of Florida IFAS Extension: Mandevilla Production Guide, Texas A&M University Department of Horticulture: Propagation of Ornamental Trees, Shrubs and Woody Vine, Clemson Cooperative Extension: Hardwood Cuttings for Shrub & Tree Propagation, Logee's Plants for Home & Garden: Cultural Information - Mandevilla, How to Get Cuttings From a Bougainvillea Plant. They will also begin to split open, revealing fluffy, dandelion-like seeds. This can take weeks to months depending on the plant. Bookmark. Plants. From cuttings. Non-blooming mandevilla. Check your mandevilla vine for pests, examining the stems, both sides of the leaves, the soil and near the drainage hole for pests. So, you brought your Mandevilla vine indoors and it lost all its leaves. In the winter when its growth slows down, cut it into the water. Take 2-3 tip or side shoot cuttings that have new growth that is beginning to firm (not new light green growth) remove all but the 2 top leaves. 1. I discovered my Daturas root well in just a jar of water. Box, camellias, azaleas and many other shrubs can be grown from semi-hardwood cuttings. If I put these in potting soil in the spring do you think they will live. Cut three stem tips from a healthy, pest-free mandevilla plant. Origin: South and Central America 6. The Texas A&M University Department of Horticulture recommends starting mandevilla cuttings in summer when the plant is actively growing. Mandevilla vine needs water on a regular basis, whether it is in indoor or outdoor. Change out the water every 3-5 days with fresh room temperature water. Stem cutting from mandevilla can be taken in the spring or summer. Wet the cut end and dip it into a rooting hormone about a ½ inch. If at this time it is potted and it develops sufficient roots to survive in the winter. Mandevilla Vine Overwintering Bloom Make It Yourself Plants Planters Planting. Mandevilla propagation is accomplished by seed or cuttings. Position in hole and backfill with soil, gently firming down. You can also take cuttings in the spring or in the late summer from the new growth. How to grow mandevilla in a pot. Propagating Mandevilla sanderi in foam medium (Bricks Oasis Floral Foam) ensures successful and uniform rooting because of the following reasons: Foam medium is engineered propagation medium formulated with optimal air/water ratio and is consistent from … Water in well. Wait and watch as your roots grow! Mandevilla Vine: Tips For Proper Mandevilla Care, Dandelion Removal: How To Kill Dandelions, Treating Yellow Leaves On Mandevilla: What To Do For A Mandevilla Plant Turning Yellow, Planting A Giving Garden: Food Bank Garden Ideas, Giving To Food Deserts – How To Donate To Food Deserts, December To-Do List – What To Do In December Gardens, Harvesting Sunflower Seeds – Tips To Harvest Sunflowers, Filling Holes In Tree Trunks: How To Patch A Hole In A Tree Trunk Or A Hollow Tree, Grow Carrots From Carrots – Sprouting Carrot Tops With Kids, Fungus Gnat Control – Fungus Gnats In Houseplant Soil, Recipes From The Garden: Pressure Cooking Root Vegetables, Gratitude For The Garden – Being Grateful For Each Growing Season, 7 Reasons To Do Your Garden Shopping Locally, Thankful Beyond Words – What Represents Gratefulness In My Garden. Dipladenia vine is propagating easily by Softwood cutting or seeds, the most appropriate time to take the softwood cuttings is Spring and Early Summer. Mist the foliage with a water-filled spray bottle. I prefer to take 3 to 4 inch firm pieces from the … Maintain humid conditions and roots should appear within one month. We use so-called ‘head-cuttings’, this is the end of the branch. Pinch the leaves from the lower half of the stem. Will Mandevilla Cuttings root in water? Mandevilla (Mandevilla splendens) is native to Brazil. Yes, there is a way to do this. Wipe down the blades of a pair of pruning shears with full-strength disinfectant cleaner before gathering cuttings to prevent the spread of infection between plants. The seeds should germinate within a month or so. Don’t forget to refill the tray with water when it dries out! The coffee filter keeps the soil in the pot, but allows the excess water to drain out. Can I expect the same with Mandevilla cuttings? The sap can be a skin irritant, so wear gloves when you are pruning your mandevilla. Learning how to propagate mandevilla is easy. The only difference between a rampant bougainvillea and a neat, compact, profusely flowering specimen is good pruning. Each 3-gallon nursery pot can root 10 to 12 mandevilla cuttings if they are spaced 2 inches apart, according to Clemson Cooperative Extension. Water the newly planted cutting thoroughly. Water mandevilla until water runs through the drainage holes in the bottom of its pot. When to Take Root Stem Cuttings . If desired, dip the mandevilla cuttings in rooting hormone and then stick them in a sandy peat mix. Mandevilla are moderate to heavy feeders depending on the light level. Choose side shoots 2-3 inches long and cut them from the plant. After watering, allow the cutting to sit undisturbed. I use 30-9-9 NPK fertilizer (At this point, a high nitrogen formula will help plants grow faster). Water mandevilla until water runs through the drainage holes in the bottom of its pot. Fertilizer for mandevilla cuttings. Growing Tips. The best time to take cuttings is in the spring but they can also be taken in summer/fall. Originally Mandevilla plants, such as Mandevilla vines, were classified as separate plants to the smaller, bushier dipladenia plants. It has glossy leaves and striking trumpet shaped flowers. Coat the bottom 2 inches of the cutting with the rooting hormone powder. You can move your vine back outdoors in the spring when night time temperatures are consistently above 50⁰F. ... You can also artificially raise humidity levels by placing the plant on a humidity tray filled with gravel and water. Grow mandevilla vine also in hanging baskets or a container on the ground. Cuttings should be made from tips about 6 inches long and trim off the bottom leaves. Use enough water to moisten the surface of the soil without oversaturating it. Quote. Position in full sun to part shade and fill with quality potting mix, such as Yates Potting Mix with Dynamic Lifter. Do not place the cuttings in full sun. Botanical name: Mandevilla sanderi, syn. Flower colors: white, pink, red, rare yellow, partl… It grows to 6″ high and 20″ wide. Answered by BushDoctor on September 12, 2017 Certified Expert . Commercial potting soils are fine, or you can use a 50-50 combination of sand and perlite, or peat moss and sand. Find more gardening information on Gardening Know How: Keep up to date with all that's happening in and around the garden. Major Mandevilla facts. Place the cuttings in a pot of water until the roots strike. These can be easily recognized by their inverted v-shaped appearance. Poke a 4-inch-deep hole in the growing medium for each cutting and then stick the cuttings into the moistened growing medium so only the top 2 inches stick up above the surface. Take a healthy 5-inch cutting and remove the bottom leaves. You can move your vine back outdoors in the spring when night time temperatures are consistently above 50⁰F. They root very easily and will root even in a glass of water. Measure a few tablespoons of IBA rooting hormone powder and place it on a paper plate. After a few months, transplant the cuttings into 1-gallon nursery pots filled with potting soil. I have Giant white parasole Mandevilla vines in pots on my deck. How to propagate mandevilla cuttings in water? This minimizes the amount of moisture lost. Start by cutting 4- to 6-inch-long shoots below a leaf node. For repotting choose a pot that is just slightly larger than the old one. As the springtime appears, and temperatures rise consistently above the 50F mark, gardeners can clean up the plant by removing any dead foliage, and then return it to the garden for the summer. It is largely the growth habit of dipladenia that sets it apart from the Mandevilla vine. Stem cutting from mandevilla can be taken in the spring or summer. It is great in large pots where it can bring an instant lush, tropical look to poolsides and outdoor entertaining areas. Post #395550. Take cuttings of the plant and bring them inside. At this time the seeds are ready to be collected. Place the cutting in a clean glass. Seedpods should be allowed to remain on the plant to dry before removing them. Place the stem cutting in a jar of water. For that reason, clonal propagation methods such as cuttings provide the surest way of reproducing particularly attractive varieties such as Alice du Pont. Gather several 6-inch-long cuttings of the same thickness as a pencil. I prefer to take 3 to 4 inch firm pieces from the … Keep these moist and warm (about 65-75 F./18-24 C.) and place them in bright, indirect light. Most cultivated mandevilla plants are cultivars and will not grow true from seed. Mandevilla species are mostly frost tender and prefer a mild to warm climate, a position in dappled sunlight, and moist, humus-rich, well-drained soil. Rooting gardenia cuttings in water is simple. In southern climates, it can be set outdoors in spring but returned inside prior to winter. Foliage – evergreen Flowering – June to October. then plant the Mandevilla, fill the pot with soil and water it; do not forget a climbing aid in case of climbing variants; Repotting . After about a month, the mandevilla will develop roots. For this method the best time to cut the stem cuttings is spring or late summer season. Remove old, woody growth and branches that rub or grow across other branches. I have Giant white parasole Mandevilla vines in pots on my deck. For this method the best time to cut the stem cuttings is spring or late summer season. Today all the plants are classified as Mandevilla. Make a 45-degree-angle cut just below the set of leaf nodes using the pruning shears. Fill a 3-gallon nursery pot with a damp mixture of half potting soil and half perlite, leaving the top third of the pot empty. One month later, I fertilized the mandevilla cuttings. Prepare the Pots Find a 4 inch pot and place a coffee filter at the bottom. Mandevilla propagation is just that easy. Choose cuttings of about 6 centimeters with about one fully grown leaf pair. In fact, it may be helpful to place them in a plastic bag (with small air holes to release excess moisture). How can you Propagate Mandevilla from Cuttings? Grow them under very bright light and slowly acclimate them to direct sun over the course of a week or two to get them ready for the garden. Watch for new growth or swelling leaf buds on the cuttings, which will indicate successful rooting. Trim a mandevilla with help from the spokesperson for new plants in this free video clip. I’ve read people don’t have any luck propagating mandevilla cuttings in plain water but wonder if there’s a trick to it, like adding something to the water, or other tips? Place the mandevilla cuttings in a somewhat shady area and keep them warm, moist, and humid. The mandevilla cuttings were green; maybe your outcome will be different with a longer or woody stem. You are now wondering whether you can start fresh plants from cuttings. Click here to learn more about how to propagate mandevilla. Water your mandevilla indoors over winter when the top inch or two of the potting mix dries to the touch. In warmer climates the vine can reach up to 20 feet tall, but in our colder climate, it more likely grows 5 feet tall. Largely grown in containers or hanging baskets, this tropical vine is generally treated as a houseplant, especially in cooler regions. As the water evaporates from the tray, it creates constant humidity for you plant. Poor enough room temperature water to cover the nodes of the cutting. Place it to this depth into a pot of propagating sand. Bright, showy mandevilla (Mandevilla sanderi) grows easily from hardwood cuttings, which root best when treated with rooting hormone. Water again in about a week, or when the soil feels slightly dry to the touch. Mist twice daily or more often if temperatures are very hot. Start with feeding young mandevilla plants a balanced 15-15-15 fertilizer, which will provide essential nutrients for root, foliage and flower production. Use enough water to moisten the surface of the soil without oversaturating it. Mandevilla is a remarkable vine. You will get some leaf drop due to lower light and humidy indoors. How to Grow Cuttings From Mandevilla Plants. The best time to take cuttings is in the spring or early summer. You'll probably find your plant needs a lot less water indoors over winter than it did outdoors in summer because in lower lighting, the plants grow more slowly and, as a result, take up less water. Cut or clip cuttings from the Mandevilla. Step 1. There are a couple of ways to propagate your red Mandevilla. Sep 13, 2013 - This is Mandevilla cuttings being rooted. The best time to take cuttings is in the spring but they can also be taken in summer/fall. Mandevilla plants can be propagated by cuttings, but it tends to be a challenging and lengthy process. Taking and planting the cuttings. You will get some leaf drop due to lower light and humidy indoors. Mandevilla hybrid: Flowering: Early spring to late autumn. That means the rest of us need to overwinter it indoors if we want to save the plant for next year’s garden. Dip the shoots in … Fill a bottle with tepid water and place the cutting in; then put the bottle in a bright window. This is the preferred method. Beautiful Flowers. I should think they would do fine in moist soil/sand mix. One is by collecting the seeds, the second is through tip cuttings and the third, which is probably the easiest process is through layering. This Mandevilla needs very little water and gives an exuberant flower show all through the summer. Bougainvilleas flower on new growth, generally in cycles 4–6 weeks long, so prune to shape after a flowering cycle, two or three times a year. How can you Propagate Mandevilla from Cuttings? How to Grow a Mandevilla Vine From a Cutting. Mandevilla propagation is accomplished by seed or cuttings. Mandevilla seeds require shallow planting, only covering them slightly with soil. Propagate mandevilla by taking softwood cuttings from the plant in spring and early summer. Mandevilla will grow fast during hot weather so don’t let the pots dry out. Only water the Mandevilla when the soil feels dry to the touch. Mandevilla vine is known for its showy blooms. Propagation Mandevilla Propagation by softwood.