Plant tubers of tuberous begonias in spring. Only plant begonias outside in May, when no more frosts are forecast. Water regularly and feed weekly with a high potash fertiliser like tomato feed. In autumn, dig up tuberous begonias and store the tubers in a cool, frost-free spot for winter.
Bring fibrous-rooted types indoors over winter, or treat as annuals and throw on the compost heap. Foliage begonias are grown as house plants but can enjoy time outdoors in summer. Begonias grow well in dappled or partial shade — avoid south-facing spots as the foliage can burn in direct sunlight.
Tuberous begonias are ideal for growing in pots and hanging baskets. They have fairly brittle stems and heavy flowers, so grow them in a sheltered spot. Fibrous rooted begonias can be packed quite tightly into mixed summer displays of other bedding plants. Foliage begonias are best grown as house plants, in dappled shade. They will enjoy a holiday in the garden in summer, in dappled shade.
In March or April, you can buy begonia tubers at the garden centre or online. Plant the tubers into individual pots or into a seed tray, hollow side up. Plant 2. Once the leaves begin to show, pot on into larger pots filled with John Innes No. Harden off the plants before planting them out in the garden in May, when no further frosts are forecast. You can also buy tuberous begonias as fully grown plants, although this is a more expensive option. Other begonia types can be bought as pot-grown plants or plugs.
Grow them in a greenhouse or sunny windowsill and harden off after all risk of frost has passed before planting outdoors. Keep plants well watered but allow the soil to dry out between waterings — this is especially important for tuberous begonias, which can rot in waterlogged soil.
Feed tuberous begonias weekly with tomato feed in summer, especially pot-grown plants. Alternatively, add a slow-release fertiliser pellet to the compost when planting. Never feed tuberous begonias into September as plants should be encouraged to slow down for the year. From October, reduce watering and remove flowers so the plants to put energy back into the tuber.
Once the foliage has been blackened by frost, life the plants. Remove the compost from each tuber, cut the stem back to about 6cm and store in a dark, cool, frost-free place until March, when it can be brought back into growth again. As the name implies, rhizomatous begonias these begonias have rhizomes or are large, swollen root-like stems just beneath the surface of the soil.
As you might expect, several stems emerge from the soil making these plants dense and lush houseplants. Many of these begonias are also noted for their large, showy, and colorful leaves. Leaves are typically mottled or marked with darker veining or variegation. Beefsteak has long been a popular cultivar of this type of begonia. While some will have showy flowers in spring, the flowers are often secondary.
Flowers are abundant in spring or year-round depending on cultivar , making for a beautiful display when kept in warm, humid, shady sites. Shrub-type begonias Begonia grandis grow from multiple stems, resemble cane-type begonias, but can exceed 6 feet tall in ideal locations. They are not typically grown in containers, as many will become too large over time. These types are more commonly grown as landscape plants in Florida or other warmer locations.
Angel wing begonia leaf. Most begonias have similar care requirements. They thrive in warm temperatures ideally F indoors or outdoors and with regular, consistent moisture. However, the roots will rot quickly when soils remain wet for long periods. They prefer bright light but are not suited for intense, direct sunlight. Indoor types do best in eastern windows with some bright morning light.
Those types grown outdoors during the growing season do best in part shade with limited afternoon sun. Lastly, begonias can be propagated by many methods. Stem cuttings are relatively easy to root in water or in perlite under mist.
Many begonias especially the houseplant types can also be propagated by leaf section cuttings where pie-shaped wedges of leaves are placed on moist media, and new plantlets emerge from the cut edges. Few plants can be reliably propagated this way, further attesting to the uniqueness of the genus Begonia!
Baptisia — Genus for false indigo, a spring-blooming perennial native to many parts of the Midwest including Iowa. Baptisias for the home landscape. Bark — the outermost layer of tree trunks, often distinctive to species. Beauty and Basics of Bark. Basil — popular annual herb; often included in pesto.
The focus of this article is tuberous begonias. These frost-sensitive plants grow from a fleshy tuber. Tuberous begonias can have either an upright growth habit for window boxes, flower pots and garden beds or a cascading habit for planters and hanging baskets. Their large, rose-like flowers come in lots of lovely colors.
See some of the options HERE. Larger tubers produce bigger plants with more stems and more of flowers. Before planting, begonia tubers should feel dense and firm, not mushy or dry. They grow best in the filtered light beneath high trees, or in an area that receives about 4 hours of morning or late afternoon sunlight.
ZONE: Both the foliage and the tubers are cold sensitive and will not survive winter outdoors except in zones In cooler climates zones , tuberous begonias are usually grown as annuals for flowers from summer through fall. 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. Start early and your begonias can be in bloom by Memorial Day. Learn more about starting begonias indoors. They will grow in full to partial shade, but will not flower in areas with dense shade and low light.
Begonias are ideal container plants for shady gardens, patios, porches and patios. See the range of tuberous begonia flower styles and some container options HERE. If you are planting begonia tubers directly into the garden, loosen the soil and dig a shallow hole. If you are starting the tubers indoors, you can plant them in individual pots or in a tray filled with several inches of moist growing mix.
Set the tuber into the hole with the depression facing upward like a bowl. Learn how to determine which end is up HERE. If you live in an area with wet spring weather, you can set the tuber at a slight angle, so water doesn't settle in the depression.
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