Put in a green house or sunny window sill as they need warmth to grow. That said, repotting begonias at some point is necessary to boost soil nutrients and aerate the soil, making your begonia transplant healthier.

Dig up and divide your begonia tubers in the late spring or late summer while the plant is in its active growth phase. Doctorbob1 . Is this a house plant? Betsy. As mentioned, begonias like to be root bound. The rhizome is cut apart and divided in order to propagate new plants. Cultivars which are usually derived from Begonia × tuberhybrida are a favourite of gardeners for their bright colours and long flowering season. Encourage bushier growth and lateral branching by pinching back the growing tips frequently, using your fingertips or shears that you wipe with rubbing alcohol between cuts to prevent spreading plant diseases. Divide a Rex begonia when it begins to outgrow its pot or once the plant is at least three years old if you want to add more begonias to your houseplant collection. The beefsteak begonia (Begonia x erythrophylla) is among the first hybrid begonias ever produced, introduced in Germany in 1845.With its shiny, waxy, rounded leaves of a delicious red wine color, its pink flowers during the winter (when you need flowers the most!) Wax begonias are a long-blooming annual. Divide in spring for more outdoor begonia plants. Since Begonia grandis appears later in the spring than many other plants, it is important to remember where you planted it and avoid disturbing that spot before the plants appear. I just call them all fancy-leaf begonias, but they divide into several structural groups: Fibrous-rooted ones have cane-like stems and often wing-like leaves. Rex begonias grow from a rhizome, which is a root system that sprouts buds and roots to grow into the plant. This is probably a good option if the mother plant doesn’t have many leaves that you can pluck. Reply. Post navigation. Rex begonias grow from a rhizome, which is a root system that sprouts buds and roots to grow into the plant. Answer + 3.

The ending of the story about how I acquired the hardy begonias in my garden is a little sad, but provides an important lesson in how to care for these plants. on May 10, 2017.

How much of the rhizome do you need for new plants. Rex begonia (Begonia rex-cultorum) is a semi-tropical perennial plant normally grown as an outdoor container plant or houseplant. Use a sharp knife and divide into as many pieces as you like, as long as each piece has at least one bud on it. I assume that the tubers are lifted & stored in a dark frost free area over winter, but when is the best time to lift them & can the tubers be split in two (or more) if big enough, how big would that be & should they be split in the autumn or just before planting. Tubers can be prone to rot if they are not planted in shallow soil with the curved hollow upwards kept free of soil and water as you must know having successfully kept yours for so long. Begonia tubers increase in size each year and after three years or so, the flower display will begin to deteriorate.