Immense Begonia

Basic Information

Common Name: Immense Begonia
Scientific Name: Begonia ‘Immense’
Native Habitat: Hybrid – Origin not specifically defined.

History / Discovery / Cultivator

Begonia ‘Immense’ is a cultivated hybrid, meaning it doesn’t have a single, identifiable point of origin in the wild. Its creation results from the deliberate cross-breeding of different Begonia species or cultivars by horticulturalists. The precise parentage of ‘Immense’ and the name of its originator are, unfortunately, not widely documented or easily accessible. Many Begonia cultivars, especially older ones, have lost their specific breeding records over time.

The genus Begonia itself is vast and diverse, with over 1,800 recognized species found across tropical and subtropical regions worldwide, primarily in the Americas, Africa, and Asia. The earliest begonias cultivated by Europeans came from the Americas, with species like Begonia minor being brought to Europe as early as the 17th century. However, modern Begonia hybridization really took off in the 19th century, driven by the increasing popularity of ornamental plants and the efforts of plant breeders in Europe and later, in North America. These breeders meticulously selected and crossed different species and varieties to create begonias with desired traits, such as larger and more colorful flowers, interesting foliage patterns, improved disease resistance, and compact growth habits.

Without concrete evidence about ‘Immense’s direct lineage, it’s difficult to pinpoint its specific geographic roots. However, based on its characteristics, it’s likely that its ancestry includes begonias from South America or Southeast Asia, given that these regions are hotspots for Begonia diversity. ‘Immense’ likely owes some of its robust growth and impressive foliage to species like Begonia rex or Begonia imperialis, which have contributed significantly to the development of many rhizomatous Begonia hybrids.

The popularity of ‘Immense’ can be attributed to its striking appearance. Its large, dramatically textured leaves, often with intricate patterns and metallic sheens, make it a standout specimen in any collection. The term “immense” refers to the plant’s potentially large size, especially its leaves. The plant’s visual appeal makes it a desirable addition to indoor gardens.

While the specific details of ‘Immense’s creation remain somewhat obscure, its existence is a testament to the ongoing creativity and dedication of plant breeders who continue to push the boundaries of what’s possible with the Begonia genus. It serves as a reminder that many of the beautiful plants we enjoy today are the result of careful selection, hybridization, and a deep understanding of plant genetics. Although its origins may be shrouded in some mystery, the captivating beauty of ‘Immense’ speaks for itself and explains its enduring appeal among Begonia enthusiasts. Further research into historical Begonia breeding records may reveal the specific hybridizer of this beautiful cultivar.

Plant Care Summary

Botanical Insights

Adaptations

Begonia ‘Immense’ showcases several adaptations typical of rhizomatous begonias, enhancing its survival as a cultivated plant. Its most prominent adaptation is its rhizome, a modified stem that grows horizontally either on or just below the soil surface. This rhizome acts as a storage organ for water and nutrients, allowing the plant to withstand periods of drought or neglect. It also enables vegetative propagation. The large, often textured leaves are adapted for capturing diffuse light in shaded environments, crucial for photosynthesis in its native understory habitat. The hairy texture found on some varieties of leaves can also help to reduce water loss. Because its habitat is prone to high humidity, this plant may have adapted to absorb moisture through its leaves. Its toxicity prevents most animals from eating it, allowing it to survive to maturity.

Propagation Methods

Begonia ‘Immense’ can be propagated effectively through several methods:

• Rhizome cuttings: This is the most common and reliable method. Cut a section of the rhizome with at least one leaf node and plant it in a well-draining potting mix.
• Leaf cuttings: Cut a leaf into wedges, ensuring each wedge has a vein. Place the wedges on a moist potting mix or perlite, and cover with a humidity dome or plastic bag. Roots will develop at the vein cuts.
• Stem cuttings: Although less common for rhizomatous begonias, stem cuttings can also be used. Take a cutting with a few leaves and place it in water or moist potting mix until roots develop.

Toxicology

Begonia ‘Immense’ is considered toxic if ingested by humans or pets (cats and dogs). The toxicity is due to the presence of soluble oxalates. When ingested, these oxalates can cause:

• Oral irritation: Burning sensation in the mouth, tongue, and throat.
• Excessive salivation: Drooling.
• Vomiting: Stomach upset and expulsion of contents.
• Difficulty swallowing: Painful or impaired swallowing.

In severe cases, if large quantities are ingested, oxalate crystals can bind to calcium in the body, leading to kidney problems. However, this is rare. Symptoms are typically mild and self-limiting. Contact a veterinarian or poison control center if ingestion is suspected.

Common Problems

Pests:

• Mealybugs
• Spider mites
• Thrips

Diseases:

• Powdery mildew
• Botrytis blight (gray mold)
• Root rot (due to overwatering)

Other:

• Leaf yellowing: Often caused by overwatering or nutrient deficiency.
• Browning leaf tips: Can be caused by low humidity or inconsistent watering.
• Leggy growth: Insufficient light can cause the plant to stretch.

Rarity & Value

Rarity:

While not exceptionally rare, Begonia ‘Immense’ can be considered relatively uncommon compared to more widely available Begonia varieties. Its unique combination of large size, intricate leaf patterns, and metallic sheen contributes to its desirability among collectors. Slower propagation rates compared to simpler begonias can also limit its availability, increasing its perceived rarity. Its sensitivity to less-than-ideal growing conditions can make it a bit harder to find.

Value:

The value of a Begonia ‘Immense’ specimen depends on several factors:

• Size and maturity: Larger, more mature plants with well-developed rhizomes and abundant foliage command higher prices.
• Leaf quality: The vibrancy and clarity of the leaf patterns, including the metallic sheen and any color variations, significantly influence value. Damage-free leaves are also prized.
• Overall health: A healthy plant free from pests and diseases is more valuable.
• Collector trends: Current trends in the plant collecting community play a role in demand and pricing.