Melinda Meservy is a Plant Specialist and the Owner of Thyme and Place, a botanical boutique offering plants and gifts in Salt Lake City, Utah. Propagating Tuberous Begonias from Stem Cuttings and Dividing Tubers To propagate begonia bulbs from a plant tuber, the tuber needs to grow for as long as it takes it to produce several shoots, each of which has at least one bud. All begonias like bright but indirect light, so find a partially shaded spot for your plant. Water begonias planted in containers until the water runs from the drainage holes.Dump the drained water out of any trays or saucers immediately after watering. Source: www.bakker.com. How often should I water my indoor begonia? Also, as you are making this transition, you will want to pinch away any dead bloom or drying leaves to help promote new growth on the plant when you bring it indoors. Store the tubers in a dry position preferably in dry sand in a frost-free place for the winter season to grow again next year. Another possibility is root rot, which might mean the leaf litter or other debris is covering the roots too much and touching the lower leaves of the plant. Do not keep pots too wet. Bring in bedding begonias that were growing outside to grow inside for the winter. To learn more and see recommended planting dates, you may be interested in reading Starting Tuberous Begonias Indoors. This article was co-authored by Melinda Meservy. Use warm water in a misting bottle. Cut the plants back to about 3” to start new growth. If you are still uncertain of whether or not your plant will work well indoors, ask an employee at your local nursery. Once the tuber is dry the stem/stems should detach easily. Helloâ¦there is nothing there to use extra water! "I purchased a begonia today and the care tag indicated it likes shade, so I transplanted it and brought it inside. The tubers can be as small as the size of a fingernail or the size of the palm of the hand and occasionally bigger. I weeded, pruned, raked, and hauled mountains of trash out of the famous Cranford Rose … Massive 6 blooms from July to late autumn. because they have pictures of every stage. In this video I show no mercy to my Abyssinian banana. Begonias may be treated as annuals, or you can store the tubers indoors and replant them again next spring. If possible, let the clumps air dry for a day or two, protected from direct sun and frost. Planted in window boxes, hanging baskets, decorative urns or garden beds, they make it easy to dress up any outdoor living space. Repeat the fertilizer application in three months by gently working it in the soil around the plants. Place the tubers in a cool, dry area to cure for 2 to 3 weeks. Providing good air circulation and removing spent blossoms and wilted leaves, will help your plants stay healthy. A begonia tuber is shaped like a little brown bowl. Cut off the foliage and allow the pot to dry out. Be careful not to overwater. Most tuberous begonias have an upright growth habit, but there are also cascading types that are perfect for hanging baskets. ", "Cutting back the plant was a big help. Sprouts emerge from inside the cupped area and roots form on all sides of the tuber. For best results, encourage the tubers to sprout before planting them in pots or in the garden. % of people told us that this article helped them. Browning begonias can mean that the plant has too little shade and is exposed to too much sunlight. Read and follow the label’s directions for the amount to use. This will help prevent rotting. To get your begonias growing and ready to bloom in time for spring, start the tubers indoors in late winter. You don’t have to completely bury the plant’s rhizome to do this. Shake off any soil that is on the roots and tubers. FREE â¦ Use a water-soluble fertilizer for blooming plants once a week if you do not use a granular fertilizer. No as a rule. 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