Nonstop Yellow Tuberous Begonia

Basic Information

Common Name: Nonstop Yellow Tuberous Begonia

Scientific Name: Begonia ‘Nonstop Yellow’

Native Habitat: Hybrid cultivar, parent species native to South America.

History / Discovery / Cultivator

The ‘Nonstop Yellow’ Begonia is a popular cultivar belonging to the Tuberous Begonia group, known for its profuse and long-lasting blooms. Tuberous Begonias, in general, have a fascinating history rooted in the South American Andes. The genus Begonia itself was named by Charles Plumier, a French botanist, in honor of Michel Bégon, a French official who sponsored Plumier’s botanical expedition to the West Indies in the late 17th century. However, the specific lineage of Tuberous Begonias that led to cultivars like ‘Nonstop Yellow’ involves further exploration and hybridization.

The story of modern Tuberous Begonias begins in the mid-19th century with the introduction of several Begonia species from the Andes Mountains, particularly from Bolivia, Peru, and Ecuador. These species, including Begonia boliviensis, Begonia veitchii, Begonia pearcei, and Begonia davisii, were crucial in the development of the large-flowered, vibrant hybrids we know today. These species were initially collected by plant hunters and explorers who braved the challenging terrains of the Andes.

Begonia veitchii, discovered by Richard Pearce, a Veitch & Sons nurseryman, was especially significant. It contributed to the large flower size and vibrant colors seen in many cultivars. Begonia boliviensis, another key player, introduced a more pendulous growth habit that later became desirable for hanging baskets. Begonia pearcei brought in yellow hues and improved tolerance to cooler temperatures.

The actual hybridization work that created the initial Tuberous Begonia hybrids was primarily carried out by various nurseries and horticulturists in Europe, particularly in England and France. These early breeders recognized the potential of these South American species and began crossing them to combine their desirable traits. The early hybrids were significantly different from the original species, featuring larger, showier flowers in a range of colors.

The ‘Nonstop Yellow’ cultivar, as a more modern development, represents generations of breeding aimed at achieving specific qualities: continuous blooming (‘Nonstop’), a bright yellow flower color, compact growth habit, and good disease resistance. While the exact breeder and date of introduction of ‘Nonstop Yellow’ can be difficult to pinpoint due to the proprietary nature of plant breeding, it likely resulted from controlled crosses made by commercial breeding companies specializing in ornamental plants. These companies focus on developing plants with characteristics that appeal to home gardeners and commercial growers, such as long flowering periods, attractive colors, and ease of cultivation. The “Nonstop” series of begonias are specifically bred for their prolific blooms that, with proper care, can last throughout the growing season. The creation of cultivars like ‘Nonstop Yellow’ reflects a sustained effort to improve and diversify Tuberous Begonias for ornamental use. The modern ‘Nonstop’ series is designed for robust growth, abundant flowering, and appealing aesthetics for gardens and containers.

Plant Care Summary

Botanical Insights

Adaptations

Tuberous Begonias, including ‘Nonstop Yellow,’ exhibit several adaptations that contribute to their success as ornamentals. Their tuberous roots serve as storage organs, allowing them to survive periods of dormancy or unfavorable conditions, such as drought. This adaptation is crucial for plants originating in environments with distinct wet and dry seasons. The large, showy flowers are an adaptation for attracting pollinators, though many modern cultivars are propagated vegetatively. The leaves are often asymmetrical, a common feature in the Begonia genus, which might aid in light capture or water runoff. Cultivated varieties, like ‘Nonstop Yellow’, have been further selected for traits such as continuous blooming, disease resistance, and compact growth habits, enhancing their suitability for container gardening. The plant’s tolerance of partial shade makes it suitable for areas where direct sunlight is limited.

Propagation Methods

‘Nonstop Yellow’ Begonias can be propagated through several methods:

• Tuber Division: The tuber can be divided into sections, each with an eye or growth point, and planted separately. This is best done in early spring before new growth begins.
• Stem Cuttings: Stem cuttings can be taken in spring or early summer. Root the cuttings in water or a well-draining rooting medium.
• Seed Propagation: While possible, seed propagation is less common for cultivars like ‘Nonstop Yellow’ due to potential variability in the offspring. Seeds are very fine and require careful handling.
• Leaf Cuttings: Similar to other begonias, sections of leaves can be placed on a rooting medium to produce plantlets.

Toxicology

‘Nonstop Yellow’ Begonias, like other Begonia species, contain soluble oxalates, which are toxic to both humans and animals. If ingested, these oxalates can cause oral irritation, excessive salivation, vomiting, and difficulty swallowing. In pets, particularly cats and dogs, ingestion can lead to more severe symptoms such as kidney failure in rare cases. It’s important to keep these plants out of reach of children and pets. If ingestion is suspected, it’s recommended to seek veterinary or medical advice. The severity of the reaction depends on the amount ingested and the size of the individual.

Common Problems

Pests:

• Mealybugs
• Aphids
• Spider Mites

Diseases:

• Powdery Mildew
• Botrytis Blight (Gray Mold)
• Root Rot (due to overwatering)

Other:

• Leaf Yellowing: Often caused by overwatering, underwatering, or nutrient deficiencies.
• Bud Drop: Can be caused by insufficient light, inconsistent watering, or temperature fluctuations.
• Leggy Growth: May result from insufficient light, causing the plant to stretch towards the light source.

Rarity & Value

Rarity:

While ‘Nonstop Yellow’ Begonias are not considered rare, older and well-established tubers can be valuable to some collectors. Specific rare color variations within the ‘Nonstop’ series, if they exist, might command a higher price, especially if they are newly introduced or difficult to propagate.

Value:

The value of a ‘Nonstop Yellow’ Begonia specimen is generally influenced by:

• Size and Maturity: Larger plants with well-developed tubers are typically more valuable.
• Flower Production: Plants with abundant and vibrant blooms are more desirable.
• Overall Health: Disease-free plants with healthy foliage command higher prices.
• Pot/Presentation: A plant presented in an attractive pot or container enhances its perceived value.
• Retail Location: Prices may vary depending on the seller (e.g., local nursery vs. big box store).