How do you overwinter rex begonias?
Overwintering: Rex begonias make excellent houseplants and can easily be overwintered indoors. To supply plants with adequate humidity, place containers on a tray of gravel, where runoff water may collect, evaporate, and raise the air-moisture level. Avoid placing plants near drafts.
Can I leave my begonias in pots over winter?
Yes, you can overwinter begonias in pots. Fibrous types can be kept as a houseplant, while tuberous varieties should be stored dormant in a cool, dark location. Overwintering begonias is easy, and it’s a great way to save your favorite varieties every year.
Do you cut back begonias in the winter?

The begonia foliage should be trimmed back, and the tubers can be dried and stored in a cool, dry location through winter, just as canna or dahlia bulbs are stored. Fibrous rooted and rhizomatous begonias do not die back once a year like tuberous begonias.
Can begonias survive winter UK?
Although many Begonias have tuberous roots, the majority of varieties are very tender and incapable of surviving the UK winter. They will require a period of dormancy in a cool, dry place.
When should I overwinter my begonias?
Tuberous begonias should be dug up and stored indoors during winter until the return of warmer weather in spring. Begonias can be dug up in fall once foliage has faded or just after the first light frost. Spread begonia clumps on newspaper and leave them in a sunny area until thoroughly dry — about a week.
Do rex begonias go dormant?

Rex Begonia Rex Begonias are a bit more of a challenge for indoor growing, but with a high humidity level can be gorgeous with bright filtered light. These plants like constant moderate moisture, high humidity, and regular fertilization. They do not go dormant, so never allow them to dry out.
Will my rex begonia come back?
Some Rex Begonias go dormant during the winter and lose all or most of their leaves. The plant may appear dead when it really isn’t. Despite its trickiness, this begonia is extremely easy to propagate. In fact, you can propagate several plants from a single leaf.
How do you save a begonia rex Overwatered?
To save overwatered begonia you need to ensure the drainage system of the pot. Assess the extent of damage, if there are root rot signs, cut off the damaged parts. Then repot it into a new pot or disinfected pot using fresh potting mix.
How do you prune a begonia rex?
Rex begonias require minimal pruning unless long, bare stems require cutting back, or you’d like to create a fuller plant. Using clean pruning snips simply cut the stem back to the base and the remaining portion should sprout new leaves and stems. Pinching the tips on younger plants helps them grow fuller too.
What do you do with begonias at the end of the season?
Cut back most of the top of the plant, leaving the ball of roots and soil intact. Place in a dry, cool storage area (a basement or garage) and allow the tubers to cure for several weeks. After curing, shake off the soil and remove the remaining stalks and roots.