Rhizomatous Begonia: Those in this group, such as B. rexii are tender, evergreen perennials that grow from a creeping rootstock. When moving begonia to a bigger pot, select a slightly larger pot for a transplant. Place the cuttings in a shaded, warm location. The roots of these types of begonias come in the form of fleshy rhizomes that creep across the surface of the soil. Most of the rhizomatous begonias from Asia and Africa are classified as distinctive foliage varieties. Do not allow any direct sunlight to reach the cuttings. Sign up to get all the latest gardening tips! for a transplant. Their stems are bamboo-like, with enlarged nodes. Most Begonia growers prefer using a relatively shallow pot for varieties like the beefsteak. Their root system is close to the soil surface, and they readily root from the stems and leaves as well. transplant it into the new medium. That said, repotting begonias at some point is necessary to boost soil nutrients and aerate the soil, making your begonia transplant healthier. Once the roots are about ½” long, the cuttings are ready to transplant. Sign up for our newsletter. This is primarily to refresh the growing medium, rather than due to their expanding root growth. They come in 2.5" or 4" pots. begonia to grow more. Wait to repot Ryan always places a few pots on the table, so he can see which size is best for the plant being repotted. Look for the sinus of the begonia leaf, which is the junction of the veins at the base of the leaf where it once attached to the stem. The vast majority of begonias offered in the trade are hybrids and thus cannot be accurately propagated from seed. Any viable leaves that fall off during repotting are always saved for future rooting purposes. If cuttings successfully root, you will see a small leaf emerging from either the leaf scar of the cutting, or perhaps the cut edge. As mentioned, begonias like to be root bound. The ideal pot for your begonia should have a drainage hole in the bottom. Repot if Necessary: Spring is the traditional season for repotting begonias, but if yours are so rootbound that they’re struggling, go ahead and move them to a bigger pot before bringing them indoors for the winter. Before repotting at all, make sure they have a solid root Order yours now. Rhizomatous begonias tend to have unusual flowers and a trailing habit. Make sure the rest of the leaf cutting is vertical, or nearly so once you insert the cutting into the soil. Rhizomatous begonias grow and spread via horizontal stems called rhizomes, and some rhizomatous species are nearly as cold tolerant as hardy begonias. Now that you know when to repot begonias, it’s time to learn If the foliage on your plants have spectacular colors in vibrant patterns that tend to overshadow their smaller blooms, they're likely to be of the rhizomatous type. Since there is such a great variety, begonias are a popular plant to grow. Cut the leaf stem to a length of 2 to 3 inches, and push it down until the leaf sinus is in contact with the soil. We carry over 15 different kinds of rhizomatous begonia plants. Between waterings, let the soil dry out slightly. increase the size of the pot as the plant grows rather than plunking it in a This may be outside in a covered potting area or bench or indoors in a brightly lit sill or table. Place the cuttings in a shaded, warm location. There are hundreds of cultivars of B. rex to choose among, usually classified by leaf size—small (three inches or less), medium (three to six inches), or large (more than six inches). Rhizomatous begonias—the kind that are often grown for the their beautiful foliage—will also grow from rhizome cuttings. have begun to decay and there is too much soil providing a surplus of nutrients This means there’s always lots of material with which to start new plants. You may even wish to fill the bottom of the container with gravel moss, vermiculite, A head house is the work center of any greenhouse operation. PROPAGATION BY TIP CUTTINGS Seen at left is a large, overgrown kohleria Place one leaf cutting wedge in each seedling pot. Slightly means to choose a pot that is an … Responds quickly to repotting, I moved mine up from a quart container to a 15" bowl over the course of 2007 and into a 18" coco basket this spring. If there is still loose soil, allow the If acclimatized first, they can take full sun with no problem, but should be given some shade when cuttings or new rhizomes are planted. Both leaf and rhizome cuttings tend to root and sprout more quickly in the spring and summer months when temperatures are warm and days are long.