There are severe constraints on the supply side of the provision of infrastructure in Asia. The infrastructure financing gap between what is invested in Asia-Pacific (around US$48 billion) and what is needed (US$228 billion) is around US$180 billion every year.
Placed in the centre of a garden bed, they can be underplanted with low growing shrubs and bulbous plants for an harmonious effect; or underplanted with grass for a contrasting statement. Alternatively, the tree can be situated at the end of a long garden to draw visitors out into the garden.
Texas gardeners often use the pawpaw as an understory tree. Desert Willow. The desert willow (Chilopsis linearis), also called the flowering willow, belongs to the Bignoniaceae family and reaches between 15 and 40 feet in height. This tree features pale green leaves and trumpet-shaped, purple flowers with yellow throats.