Water in the soil around the tuber until the soil slightly settles. Water in the new tubers, keeping the soil damp, but not soggy. © Copyright 2020 Hearst Communications, Inc. Clemson University suggests that begonias look best when grown in large groupings, so consider adding an impact area of Begonias. Begonias thrive in a location with partial shade and moist, well-draining soil. Avoid adding water directly to the top of the tuber; if the indentation holds water it could rot. Water the soil around the begonia tuber and avoid overhead watering. The container should be at least twice the size as the diameter of the tuber. The indentation is the portion with the leaves and stem will grow, the bottom round portion is where the roots will form. Remove tuber from the soil when the plant is spent, and allow it to dry for a few days. Plant tuberous begonias in a bed that receives filtered sun or dappled shade, in spring after frost danger is past. Avoid adding water directly to the top of the tuber; if the indentation holds water it could rot the plant. With proper care, tuberous Begonias will remain in bloom for several months in the summer, producing large clusters of single or double flowers in almost every color except for blue. Space tubers 8 to 12 inches apart. Question: I am new to Begonias and I purchased one last summer. Tuberous begonias (Begonia tuberosa) add bright color and attractive green foliage to shady, well-drained areas of the garden. They can be grown in both pots and the garden, although it's easier to manage them in pots. Deadheading spent blooms regularly helps keep your Begonia healthy … Jenny Harrington has been a freelance writer since 2006. Select a well-drained location with soil rich in organic matter. Tuberous begonias have beautiful rose like flowers in a wide variety of colours and forms. There's no need to throw them away when cold weather hits and the tops die. Tuberous Begonia Care Water the plants regularly to keep the potting soil slightly moist. Begonias come in over 1,500 species and over 10,000 hybrids, with new cultivars being introduced every year, notes GardeningKnowHow. Remove faded blooms frequently, so the plant will produce additional blooms. If you bring it indoors and "overwinter" the plant, you'll be able to plant the tuber later in the year. But while they need well-drained soil, they are not drought tolerant. Start the container indoors in cooler locations, and then move outside once temperatures are warmer. They look like a brown squatty tomato with an indentation on top. Avoid watering the foliage to help prevent rot and disease. Tuberous begonias grow well as potted plants, although they may require more frequent watering than garden plants. Among other things, she has worked with a florist. Water the Begonia until water is moist but not soggy. Select a location with partial shade and moist, well-draining soil. Apply a high-nitrogen soluble fertilizer, at the package rate, every two weeks from when spring growth begins until flower buds appear. Be sure to orient the tuber correctly when planting it, with the indentation facing up. Add a soil amendment, such as peat moss or other organic matter to help improve drainage. Plant tuberous begonias in a bed that receives filtered sun or dappled shade, in spring after frost danger is past. Though they need to be shaded from hot sunlight, they do need some sun to flower best. Take the following steps to save your potted tuberous begonia tubers: Remove plant from pot before hard frosts occur. The top of the tuber should be about level with the surrounding soil. Fill your desired containers with well-draining potting soil. Just make sure to place the pot in a place where it will plenty of bright indirect light, and have high humidity. Fertilize with a low-nitrogen fertilizer monthly until the end of summer once the plants begin to bloom. Keep Begonias indoors until all threat of frost has passed. Hardy tuberous begonia can be an exotic addition to shady borders particularly in late summer. Flowers may be single or double, plain, ruffled or toothed. Some varieties are upright plants, growing up to 2 feet tall, but the majority of tuberous Begonias grown are multi-stemmed, pendulous hanging plants. Foliage can be bronze, green, and variegated. Stop watering begonias once the foliage begins to yellow in fall. I watered the begonia and gave it fertilizer and have it in a bright window. Plant all types of begonias outside in a partly or lightly shaded location after all danger of frost Water the plant frequently, and keep it from intense direct sunlight until the plant is firmly established. Overwinter the tubers in a cool, dark place until spring. Whether it is small and compact or large and sprawling, there are quite a few types of Begonias to choose from. Her published articles have appeared in various print and online publications. More … Begonia blooms are available in hues such as white, rose, pink, and red, with foliage in a variety of colors too! Replenish the mulch layer each fall and spring. In areas that experience winter freezes, dig up the begonia tubers and store them in dry peat moss. Take care to not bend or break the stems of the plant. They are interesting shapes. evansiana AGM, which is hardy down to 0°C (32°F). Growing Tuberous Begonias. Tuberous begonias grow from tubers, much like potatoes, and reach their peak in late summer and autumn. 2. If you realize you planted the tuber upside down shortly after planting, gently dig up the tuber and replant it with the right side up. Insert the tuber partially in the soil with the indented side facing up; the top of the tuber should be about level with the surrounding soil. Select a well-drained location with soil rich in organic matter. Cut back the foliage to within 1 inch of the ground once it dies back, usually after the first light frost. Remove blooms as often as you like, but remove the foliage sparingly, as the leaves feed the plant through photosynthesis and strengthen the plant for future year’s growth. Mist the foliage lightly during extended hot and dry weather to increase the humidity around the leaves. Deadheading spent blooms regularly helps keep your Begonia healthy and compact. This weeping orange begonia is tuberous The orange weeping one in this picture is three years old and I have never taken it out of the pot it currently lives in. Do you think this will grow even though it is started so late? The tubers can be saved over the winter and planted again … Loosen soil, and insert the tuber partially into the ground with the indented side facing up. Store tuber in a cool, dark location in a box with peat moss until the start of the next growing cycle. Dry tubers out for a few days, then store the tuber in a cool, dry box with peat moss until next year’s planting. It’s best to limit transplant shock when possible. Avoid watering the foliage to help prevent rot and disease. Tuberous begonias can’t be kept alive year-round even in warmer climates or if brought indoors. Be sure to provide plenty of air circulation to prevent powdery mildew. Do I let it go dormant, or do I leave it bloom? Most grow to 30–50cm tall, although some varieties can reach 80cm. The most important thing is perfect drainage, as they need to be able to shed excess water in order to avoid root rot. Sadly, if you choose to keep the plant outside to enjoy the blooms you won't have it again next year. When planting Begonias outside, space them about 12 inches apart to allow for adequate growing room. Tuberous begonias do not grow well in hot, arid environments without special care. Planting the tuber upside down will drastically drain the plant, and will inhibit the amount of initial growth in the plant. The only option is to salvage the tubers and help them regenerate the following spring. Tuberous begonias are native to high altitudes growing conditions in the Andes Mountains. I live in Zone 4. Begonias bloom all summer long and are very easy to care for too. The best range of tuberous begonias can be bought by mail order for delivery in August and September. Spread 2 inches of mulch over the soil surrounding the begonia, but avoid covering the tuber with the mulch. Tuberous begonias are perennial in U.S. Department of Agriculture hardiness zones 9 through 11, and they thrive in areas where summers remain cool. Answer: Unfortunately I think it's too late in the season to try to plant it outdoors, but growing the begonia indoors as a houseplant shouldn't be a problem. 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