Pandorea

Basic Information

Common Name: Pandorea

Scientific Name: Pandorea

Native Habitat: Australia and New Guinea

History / Discovery / Cultivator

Pandorea, a genus of flowering plants belonging to the family Bignoniaceae, primarily originates from Australia and New Guinea. The genus name “Pandorea” is derived from Pandora of Greek mythology, alluding to the plant’s abundant and attractive flowers that emerge seemingly unexpectedly from the vine.

The botanical exploration and documentation of Pandorea species can be attributed to early European botanists who ventured into the Australian continent. Robert Brown, a Scottish botanist who accompanied Matthew Flinders on his voyage to Australia in the early 19th century, played a significant role in describing and classifying many Australian plants, including members of the Pandorea genus.

Pandorea jasminoides, commonly known as the Bower Vine or Bower of Beauty, is perhaps the most widely cultivated species within the genus. Its popularity stems from its vigorous growth, profuse flowering, and relatively easy cultivation. It’s believed that early Australian settlers and gardeners recognized the ornamental potential of Pandorea jasminoides and began cultivating it in their gardens and homesteads. Over time, its cultivation spread to other parts of the world, particularly to regions with temperate and subtropical climates.

Another notable species is Pandorea pandorana, often referred to as the Wonga Wonga Vine. This species is highly variable, with different forms and flower colors found across its widespread distribution range. Indigenous Australians have long utilized Pandorea pandorana for various purposes, including using its strong, flexible stems for weaving and crafting.

The cultivation and popularization of Pandorea species have been facilitated by nurseries and horticulturalists who have selected and propagated desirable forms with improved flowering characteristics, disease resistance, and growth habits. Modern breeding efforts have also led to the development of new cultivars with unique flower colors and patterns, further enhancing the ornamental appeal of these vines.

Today, Pandorea vines are widely grown as ornamental plants in gardens, parks, and landscapes around the world. They are valued for their ability to provide shade, cover fences and walls, and attract pollinators such as bees and butterflies. Their adaptability to various growing conditions and relatively low maintenance requirements make them a popular choice for both amateur and professional gardeners. The genus continues to be of interest to botanists and horticulturalists alike, with ongoing research focused on understanding their evolutionary relationships, ecological roles, and potential for further horticultural development.

Plant Care Summary

Botanical Insights

Adaptations

Pandorea species exhibit several adaptations that allow them to thrive in their native Australian and New Guinean environments. Their climbing habit, facilitated by twining stems or tendrils, enables them to access sunlight in dense forests and woodlands. The leathery leaves of some species help to reduce water loss in dry conditions. Their vibrant and nectar-rich flowers attract a variety of pollinators, including bees, butterflies, and birds, ensuring successful reproduction. The ability to produce large quantities of seeds, often dispersed by wind or animals, also contributes to their widespread distribution. As a houseplant, they adapt well to being trained on trellises or in hanging baskets, allowing them to maximize light exposure and display their attractive foliage and flowers.

Propagation Methods

Pandorea can be propagated through several methods:

• Stem Cuttings: This is the most common and reliable method. Take semi-hardwood cuttings in spring or summer, dip the cut end in rooting hormone, and plant them in a well-draining potting mix. Keep the cuttings moist and warm until roots develop.
• Seed: Seeds can be sown in spring after soaking them in warm water for 24 hours to improve germination.
• Layering: This involves bending a low-growing stem to the ground and covering a portion of it with soil. Once roots develop, the layered stem can be severed from the parent plant.

Toxicology

Pandorea vines are generally considered non-toxic to humans and pets. However, ingestion of any plant material can potentially cause mild gastrointestinal upset. While the plants are not known to contain any highly toxic compounds, it is always best to err on the side of caution and prevent pets and small children from consuming any part of the plant. If ingestion occurs and symptoms such as vomiting or diarrhea develop, consult a veterinarian or physician.

Common Problems

Pests:

• Aphids
• Spider mites
• Scale

Diseases:

• Root rot (if overwatered)
• Fungal leaf spots

Other:

• Yellowing leaves: Often caused by overwatering, poor drainage, or nutrient deficiency.
• Lack of flowering: Insufficient sunlight or over-fertilizing with high nitrogen fertilizer.
• Leggy growth: Insufficient pruning or lack of light.

Rarity & Value

Rarity:

While Pandorea jasminoides is commonly available, some less common cultivars with unique flower colors or variegation may be considered relatively rare. Wild populations of certain Pandorea species may also be threatened by habitat loss or degradation, contributing to their rarity in their natural environments.

Value:

The value of a Pandorea vine typically depends on factors such as its size, maturity, flowering potential, and the uniqueness of its cultivar. Variegated forms or those with unusual flower colors may command higher prices. A well-established vine with a healthy root system and vigorous growth will generally be more valuable than a smaller, less developed plant. Current trends in the plant collecting community can also influence demand and pricing.