When should I repot tuberous begonias
Joseph Russell
Updated on March 23, 2026
Fill a flat with peat moss in February or March. … Moisten the peat moss and place the flat in an area with indirect light, that’s between 60 and 70 degrees Fahrenheit.
When should begonia tubers be repotted?
Repotting Begonia Houseplants Indoor begonias need repotting when their tubers outgrow their current pot, or when the potting mix is more than three years old or has become unsuitable. The good news is that repotting can be done at any time of year, although spring, when the plant starts regrowth, is best.
How do you stop tuberous begonias from getting leggy?
Pinching and Pruning Pinching back your begonias is the first step to correct legginess. For small plants on windowsills, or seedlings for the garden, pinching out the tiny new leaves on the growing tips of the begonias will force new growth along the stem and encourage dense, compact plants.
How do you transplant tuberous begonias?
Plant the tubers 1” deep in moist growing mix and water sparingly. When the plants have one or two leaves, transplant them into individual 8” pots or combine several in a larger container. If you are planting directly into the garden, position the sprouted tubers about 5” apart and cover them with 1” of soil.Can tuberous begonias be brought inside for the winter?
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. … You should also be overwintering a begonia grown outdoors in containers.
What is the best potting compost for begonias?
Begonias thrive in a potting mixture that is nutrient-rich and free-draining. (Many savvy begonia gardeners prefer well-aged oak leaf compost mixed with an equal part of sand.)
Should I water begonia after repotting?
Fill in additional potting soil around the roots and firm the soil around the top of the container with your hands. Water the repotted begonia generously immediately after you finish transplanting it and place it back in its growing location.
How do you keep begonias blooming?
Select a location receiving more direct morning or evening sunlight than mid day sun. Early morning / late day sunlight is much cooler with less intense rays. By keeping begonias out of the mid-day direct sun, the plants have less stress, and will produce more blooms.When can you move begonias outside?
Plant them outdoors in late spring after the soil is warm and all danger of frost has passed. For earlier flowers, the tubers may be started indoors in pots, about 8 weeks before you expect to plant them outdoors. All you need is a pot, some moist growing mix and a warm, sunny location.
Do you have to replant begonias?Depending on the species, these flowers grow as perennials in U.S. Department of Agriculture zones 6 through 11. Tuberous begonias grow from fleshy tubers that you can store during the winter dormant period and replant in the spring.
Article first time published onHow do you make begonia bushier?
General Pruning Pinch the stems back to the first or second healthy bud from the tip. You can repeat this process two or three times at about four week intervals to encourage maximum bushiness. Pinching forces the begonia to branch at the pinch point, resulting in more stems, leaves and flowers.
Is Epsom salt good for begonias?
While many gardeners attest to using Epsom salt on their plants to enhance their pH levels or add magnesium, it may not be ideal for begonias specifically. If your plants lack magnesium sulfate, it’s better to find fertilizers sufficient in this mineral.
Can you cut begonia tubers in half?
Unlike potato tubers, you can’t cut begonia tubers into pieces to produce more plants. Although some growers divide begonia tubers, they must make the divisions when the plant is actively growing, and the tuber pieces often become diseased and rotten.
What is the difference between tuberous begonias and wax begonias?
Wax begonias can tolerate more sun than other types, and the ones with bronze-colored leaves are the most sun-tolerant of all. Tuberous begonias prefer more shade and less heat, so we often see them on display in late summer. Soil: Light, rich, humusy soil.
How do you keep potted begonias over the winter?
Whether you packed your begonia tubers in a box, or kept them in their pots, where you store them for winter is the same. Keep them in a cool, dry, dark location, where the temperature stays between 50-60° F.
How do you transplant begonias?
Use a soilless planting medium that is equal parts peat moss, vermiculite, and perlite. Amend the medium with a couple of tablespoons of ground limestone to help control humidity. Mix together well and moisten with water. Gently remove the begonia from its container and immediately transplant it into the new medium.
How do you fix transplant shock?
Keep roots moist – Keep the soil well-watered, but make sure that the plant has good drainage and is not in standing water. Wait patiently – Sometimes a plant just needs a few days to recover from transplant shock. Give it some time and care for it as you normally would and it may come back on its own.
How do you split begonia bulbs?
- Step 1 – Find a suitable tuber. A tuber ready to divide should be large and also have at least two clear stems. …
- Step 2 – Cut with a sharp knife. Cut the tuber with a sharp knife directly between the two stems.
- Step 3 – Leave to dry. …
- Step 4 – Replant.
How do you fertilize begonias?
Feeding for Blooms For healthy plants and abundant blooms, apply 10-10-10 liquid fertilizer (view example on Amazon) diluted at a ratio of three parts water to one part fertilizer when you first plant (or transplant) your begonias and approximately every 3 weeks thereafter.
Do Begonias need ericaceous compost?
They will grow much better in a peat based ericaceous compost than a soil based one and are not at all easy in peat free mixtures. … This is because they want permanently moist compost that’s well drained so never waterlogged.
What month do begonias flower?
Begonias grow in moist, shady gardens where they have well-drained soil, wind protection and filtered or indirect sunlight. A typical blooming season starts in June and ends with the first frost. They are so easy to grow that a broken stem or leaf stalk stuck in soil often roots as a new plant.
What to do with begonias when finished flowering?
Caring for Tuberous Begonias After They Bloom At the end of the growing season, simply put the entire plant in your compost pile. If you want to save the begonia tubers and replant them next spring, here’s how to do it: Begonias that are in containers can simply be moved indoors before the first frost.
Can you use Miracle Grow on begonias?
Once a week apply half strength (1/2 T Miracle Grow or other soluble plant food per gallon) fertilizer solution in place of regular watering, being sure to give the basket enough so that liquid seeps from the bottom of the pot. Tuberous begonias are not heavy feeders, so don’t overdo it.
What do Overwatered begonias look like?
Look for the following symptoms and conditions that make it more likely that overwatering is the cause of your begonia drooping; Yellowing leaves, particularly affecting the lower leaves first. Brown leaf tips despite good humidity and soil moisture. Leaves dropping from the plant, often with soggy, limp petioles.
Do begonias need deadheading?
Hardy in U.S. Department of Agriculture zones 6 through 11, depending on the cultivar, begonias (Begonia spp.) do not require deadheading to thrive. Rather they self-clean by dropping spent flowers on their own, says the University of Illinois Extension.
Why are my tuberous begonias not flowering?
The tuberous begonia suffers flower bud drop if it is overwatered or overfertilized. The plant needs moist soil that dries between waterings. This reduces disease and encourages blooms. The begonia benefits from application of a water-soluble balanced fertilizer once or twice a month.
Do begonias like sun?
They do best in situations with shade or morning sun/afternoon shade. Most varieties have flowers that hang down a little, making tuberous begonias ideal for hanging baskets and window boxes rather than garden beds and borders. No matter where you grow them, make sure they have good drainage to prevent rot.
Why are the flowers on my begonia turning brown?
Begonia plants do not like very wet soil, and too much soil moisture can cause the plants‘ roots to rot. … Either may lead to wilting and browning of the plant. Decrease watering so the begonias’ soil dries out between watering sessions.
How often should I water begonias?
Water Needs A good rule of thumb is to water every two to four days. When it’s hot and dry you’ll need to water more often than when the air cools down and the soil holds more moisture. Begonia plants in full sun will also require more water than plants in shady locations.
How far apart do you plant begonias?
Spacing: Begonia tubers should be spaced about 1 foot apart in the garden, but can be planted closer together in hanging baskets and window boxes.
Do you cut back begonias in the winter?
In warm, frost free climates, begonias can grow outdoors as perennials and certain types may even bloom all year. … In cool climates, they can be dug up. 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.